Euglena are protists commonly found in lakes and other bodies of water. The diagram shows a Euglena.
cell
membrane
flagella
eyespot
chloroplast
nucleus
How does the structure of a Euglena compare with the structures of members of Kingdom Bacteria and Kingdom Plantae?
This protist has a flagellum for movement like some bacteria but also has an eyespot to sense light like some plants.
This protist has a cell membrane like bacteria but also has a chloroplast to squeeze out excess water like some plants.
This protist has a nucleus to control cell activities like some bacteria but also has an eyespot like some plants.
This protist is single-celled like some bacteria but also has chloroplasts to perform photosynthesis like some nlanti
Answers
The protist is single-celled like some bacteria but also has chloroplasts to perform photosynthesis like some plants.
According to this question, the structure of an euglena is given. The euglena is a protist that contains the following organelles: cell membrane, flagella, eyespot, chloroplast, and nucleus.
The euglena as a protist is similar to some bacteria by the possession of a single cells but similar to plant cells by possession of chloroplast for photosynthesis.
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Related Questions
Explain Phenomenon
You observe many
mushrooms growing in a circle. How many
organisms are you likely seeing? Explain.
Answers
The phenomenon of observing many mushrooms growing in a circle is known as a fairy ring or elf circle.
The number of mushrooms growing in the elf circle depends on the species of the mushroom.
What is an elf circle?Fairy rings, often referred to as elf rings or pixie rings, are circles composed of mushrooms that appear in nature.
Some mushrooms are small, while others can reach a diameter of 600 meters as they emerge from the earth in a circular pattern. One of the most wonderful places in the woods are fairy rings.
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What part of an angiosperm contains the plant’s sperm?
pollen
anther
pistil
Style
Answers
Answer: pollen
Explanation: The anthers bear the pollen grains which contains the male gamete(sperm).
what happens in the body when you come home from school, smell cookies baking, run to the kitchen to see if they're done and take one? You eat the whole cookie and drink a glass of milk. How many body systems are involved? What role does each play?
Answers
Answer:
5 body system
Explanation:
The aroma from the cookies get in into the nostril with oxygen through respiration system.This diffuses through the nostril to the olfactory lobe.
Endocrine system stimulates the production saliva from the salivary glands into the mouth.This is salivation.
Running to the kitchen and picking one involved the activity of skeletal and muscular systems systems through contraction of muscles and supports by the bones
The olfactory lobe is in the olfactory system of the nervous system,This is transfer to the brain -to the olfactory cortex for analysis.
When the food is eaten,the taste sensation is sent to the orbital cortex for the blend of taste and aroma of the cookies to give a pleasant flavour.
Likewise the digestion of cookies begin in the mouth,while that of the milk starts in the stomach.This is digestive system
Plate motion occurs as a consequence of convection in Earth's
crust
mantle
core
Answers
The movement of these tectonic plates is most likely caused by convection currents in the molten rock beneath the crust of the Earth. The immediate consequences of this tectonic shift are earthquakes and volcanic eruptions.
What effect does this plate movement have?Mountains will grow where plates converge or push together, and continents will split and oceans will form when plates pull apart or diverge. The Earth's geography has changed significantly over the span of millions of years as a result of the continents passively drifting with the plates.
What causes the mantle's plates to move?The plates fit tightly against one another and lie on the heated, molten rock of the Earth's mantle like fragments of a split shell.
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what is the difference between cork formation and gum formation in the plants as an immune mechanism
Answers
Answer:
Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.
Explanation:
In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction?
(A) Reducing the amount of water
(B) Reducing the amount of catechol
(C) Increasing the amount of catechol oxidase
(D) Increasing the amount of benzoquinone
Answers
The following will decrease the rate of this reaction option B. Reducing the amount of catechol.
In the enzyme reaction you described, reducing the amount of catechol will decrease the rate of the reaction. As catechol is the substrate, it binds to the active site of catechol oxidase, the enzyme, to facilitate the reaction. A lower concentration of catechol would result in fewer substrate molecules available to interact with the enzyme, leading to a slower reaction rate.
Reducing the amount of water (option A) is not likely to affect the reaction rate significantly, as water is a by-product and does not play a direct role in the reaction mechanism. Increasing the amount of catechol oxidase (option C) would typically increase the reaction rate, as there would be more enzyme molecules available to bind with catechol, speeding up the process.
Finally, increasing the amount of benzoquinone (option D) might have minimal effect on the reaction rate, as it is a product, and any potential impact through product inhibition would depend on specific reaction dynamics.
In summary, reducing the amount of catechol, the substrate is the most likely option to decrease the rate of the enzyme reaction involving catechol oxidase. Therefore, the correct option is B.
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What are the best, most accurate description for “agonal respirations”
Answers
The best, most accurate description for “agonal respirations” are abnormal breathing characterized by gasping process, myoclonus and grunting.
What is agonal respiration?
Agonal respiration is a form of abnormal breathing that originate from the brain stem which is a part of autonomic nervous system and it is characterized by a gasping process that lead to labored breath when the body is in too much stress or distress.
Therefore, The best, most accurate description for “agonal respirations” are abnormal breathing characterized by gasping process, myoclonus and grunting.
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Briefly explain why it is difficult to determine the age of our planet.
Answers
Answer:
It is difficult to determine the age of our planet because the time this accretion process took is not yet known and predictions from different accretion models range from a few million up to about 100 million years
In cells, genetic information is transferred from DNA to mRNA. Which of the following best describes how mRNA is used to produce proteins?
• Ribosomes move along the mRNA strand and connect amino acids according to the sequence of the mRNA.
© The mRNA is replicated, and then both strands are folded into a three-dimensional structure known as a protein.
© Enzymes break up the mRNA strand so that amino acids found floating freely in the cytoplasm can bind to the mRNA
bases.
© Amino acids on ribosomes attach to the mRNA strand and then digest the strand, leaving the amino acids free
assemble into proteins.
Answers
Ribosomes move along the mRNA strand and connect amino acids according to the sequence of the mRNA. The correct option is A.
Thus, in order to create proteins, ribosomes move along the mRNA strand and join amino acids in the proper order. The mRNA molecule joins to a ribosome during translation, and the ribosome reads the nucleotide sequence on the mRNA one codon at a time.
A molecule known as transfer RNA (tRNA) transports each codon's designated amino acid to the ribosome. The ribosome then joins the amino acids in the polypeptide chain according to the mRNA sequence, which will eventually fold into a protein. The newly created protein is then released after the ribosome reaches a stop codon, which happens to be the end of this process.
Thus, the ideal selection is option A.
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15. What are the factors that are critical for gas diffusion into the al
a. What are the 4 factors?
b. Please explain at least one disease state that occurs because one of the 4
factors critical for gas diffusion are changed.
i. How would a patient with this disease handle walking up the stairs?
ii. Which chemoreceptor would take over ventilatory control for this
patient?
16. Why is nitrogen only found in the blood during deep sea diving?
Answers
The following four elements are essential for gas diffusion into the alveoli:
Alveolar-capillary membrane thickness,Available surface area for gas exchange: Gases' partial pressure gradient: Gases' solubility How would a patient with this disease handle walking up the stairs?Pulmonary fibrosis is an illustration of a disease state that might develop when one of these important components is altered. Scarring causes the alveolar-capillary membrane to thicken in this disease, which affects gas exchange. Hence, individuals with pulmonary fibrosis may have breathing problems and shortness of breath, especially after exercise like climbing stairs.
In order to maintain ventilation, the chemoreceptors in the carotid and aortic bodies would be in charge of the patient.
As a result of the high pressure of the compressed air used in scuba diving, nitrogen is only found in the blood during deep sea diving. The nitrogen in the compressed air dissolves into the bloodstream when a person dives deep underwater because of the increased pressure.
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How can natural selection and genetic drift impact the evolution of a species?
Answers
Answer:
Both natural selection and genetic drift can impact the evolution of a species in different ways. Here are some examples:
Natural selection can cause the evolution of new adaptations that improve the fitness of a population. For example, if a population of birds lives in an environment with two types of seeds, birds with larger beaks may be better able to crack open the larger seeds and have a higher chance of survival and reproduction. Over time, the frequency of the larger beak trait may increase in the population, leading to the evolution of a new adaptation.
Genetic drift can cause the loss of genetic diversity within a population, which can reduce the ability of a population to adapt to changing environmental conditions. For example, if a population of insects experiences a severe reduction in population size due to a natural disaster, certain alleles may be lost from the population due to chance events. This can reduce the genetic diversity of the population and make it more vulnerable to environmental changes in the future.
Explanation:
Lesson Review
1.
What is the primary function of enzymes?
A. They keep the pH of the body within acceptable levels.
B. They make essential biochemical reactions possible or speed them up.
C.
They enable the body to use energy to produce food.
D. They give cells the energy they need to carry out life functions.
Answers
Answer:
\(\huge\boxed{\sf Option \ B.}\)
Explanation:
Enzymes are:
made up of proteins.speed up biochemical reactions.lower activation energy. (minimum energy required to speed up the reaction.)are not changed by the biochemical reaction.make essential reactions possible that are responsible for the survival of organisms.Which type of replication error would be most likely to result in genetic variation among organisms
Answers
The type of replication error that would be most likely to result in genetic variation among organisms is a mutation.
Mutations are changes in the DNA sequence that occur during the replication process. They can introduce new genetic variations by altering the sequence of nucleotides in the DNA. Mutations can be caused by various factors, including errors in DNA replication, exposure to mutagenic agents (such as radiation or certain chemicals), or spontaneous changes in the DNA structure.
When a mutation occurs in the DNA of an organism, it can lead to changes in the genetic information. These changes can be beneficial, detrimental, or have no significant effect on the organism's phenotype. However, if a mutation provides a survival advantage or increases an organism's reproductive success, it may be selected for and passed on to future generations, resulting in genetic variation.
The occurrence of mutations is a natural and ongoing process in the evolution of organisms. It contributes to genetic diversity, allowing populations to adapt and respond to changes in their environment over time. Therefore, mutations are the primary replication error that leads to genetic variation among organisms.
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explain with examples,
simple explanation about the following disease a) flatulence b) heart burns
Answers
The correct answers are:
a) Flatulence: Excessive gas in the digestive system causing bloating and passing of gas.b) Heartburn: Burning sensation in the chest caused by stomach acid refluxing into the esophagus.a) Flatulence: Flatulence is the excessive accumulation of gas in the digestive system, resulting in bloating and the release of gas through the rectum. It is commonly caused by the digestion of certain foods that produce gas as a byproduct, such as beans, lentils, and carbonated drinks.
b) Heartburn: Heartburn is a burning sensation in the chest or throat caused by stomach acid refluxing back into the esophagus. It occurs when the lower esophageal sphincter fails to close properly, allowing acid to flow upward.
Common triggers include spicy foods, fatty foods, caffeine, and alcohol. The discomfort typically rises behind the breastbone and can be worsened by lying down or bending over. Antacids and lifestyle changes, such as avoiding trigger foods and eating smaller meals, can help alleviate heartburn symptoms.
In conclusion, flatulence refers to the excessive accumulation of gas in the digestive system, leading to bloating and gas release, while heartburn is characterized by a burning sensation in the chest caused by stomach acid reflux into the esophagus.
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Part E
Which of the following variables did Pasteur change in his experiment to test the hypothesis of
spontaneous generation?
Answers
The variables that Pasteur changed in his experiment to test the hypothesis of spontaneous generation is the shape of the flask
Pasteur in 1856 was known for his contribution to the science world through the study of the causes of spoilage in beer and wine. He demonstrated his knowledge from his discovery of the properties of fermentation by microorganisms.
He demonstrated and discovered that airborne microbes were the cause of food spoilage not a spontaneous generation with his swan-neck flask experiment. He went ahead with a suggestion that if microbes were responsible for food spoilage and fermentation, they could also be responsible for causing infection and this was the foundation for the germ theory of diseases.
In the later year, Pasteur established his previous experiment with a new one. In this new experiment, he made several flasks with long, twisted necks called the swan-neck flasks where he boiled broth and sterilized it. The essence of the swan neck design is to inhibit the introduction of airborne microorganisms into the flask by trapping them between the twists and bends of the flask and also to allow the exchange of air in the flask with the surrounding air.
Based on the theory above, we can conclude that the variables that Pasteur changed in his experiment to test the hypothesis of spontaneous generation is the shape of the flask
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All living organisms have the same biochemical life processes. What is most likely true?
Group of answer choices
All organisms emerged at the same time and place.
All organisms are related through evolution and natural selection.
The biochemical processes in living organisms are unrelated to evolution.
The biochemical processes arose separately in different kinds of living organisms.
Answers
All organisms are related through evolution and natural selection is True.
What is Evolution?Evolution is the process in which organisms undergo changes from time to
time as a result of different factors such as adaptability to the environment.
Organisms in nature arose from a common ancestor and the favorable
traits were passed from one the parent to offspring over a large period of
time through the following processes
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When you need to convert from one system of measurement to another, you should convert to the a) system that will have the highest number. b) system that will have the smallest number. c) system used on the medication label. d) metric system.
Answers
Answer:
3. In my opinion, the use of archetypes in a story like "The Apple Tree" isn't lazy or unimaginative. This is because of various reasons, mainly being that it is extremely hard to come up with anything completely original. Chances are that anything you think of has already been thought of, made, or in the process of being made. I believe as long as something isn't completely copying something else, then it is okay for it to exist. For example, "The Apple Tree" and the story of Adam and Eve follow the same plot archetype and are similar in many ways. But the two stories talk about two very different concepts. I believe it is okay to take inspiration from something else because that is how evolution works, and without evolution, humans wouldn't be where they are today.
Explanation:
what is colustrum? explain plz
Answers
Carlton and Vanessa are lab partners in their biology class. One of their labs was to run the smell test experiment on each other.
When performing the smell test, Vanessa was quite good at noticing a difference between the various intensities of vanilla and also
the various intensities of evergreen. Although Carlton could distinguish what the vanilla and evergreen smells were, he couldn't tell
there was a difference in the intensities in the vanilla or the evergreen. Based on the information presented in this scenario, which
of the following is true?
Vanessa has a more sensitive difference threshold than Carlton.
Carlton has an impaired absolute threshold.
Vanessa has a better absolute threshold than Carlton.
Carlton has the superior performance with respect to the difference threshold.
Vanessa has an impaired absolute threshold.
Answers
Vanessa has a better absolute threshold and more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.
Carlton and Vanessa were lab partners for a biology class and were asked to run a smell test experiment on each other.
Vanessa was excellent at noticing the difference between various intensities of vanilla and evergreen.
Carlton, on the other hand, couldn't distinguish the difference in the intensities of both vanilla and evergreen, though he could tell the smells of both.
Hence, based on the information provided in the scenario, it can be inferred that Vanessa has a more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.
The two significant aspects that are involved in the scenario are absolute threshold and difference threshold.
The absolute threshold is the smallest quantity of a stimulus that an individual can detect, whereas the difference threshold is the minimum difference in stimuli that an individual can detect.
Carlton could recognize the stimuli's smell but not the difference in the intensity of vanilla and evergreen.
This shows that Carlton has an impaired absolute threshold.
He could not detect the smallest quantity of a stimulus to differentiate between the smells.
Vanessa was quite good at noticing the difference in the intensities of vanilla and evergreen.
This means that Vanessa has a more sensitive difference threshold than Carlton. She could detect the minimum difference in stimuli required to differentiate between smells.
Vanessa also has a better absolute threshold than Carlton as she could detect the smallest quantity of stimulus required to detect the smells.
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The cell membrane is mainly made up of lipids and proteins. It acts as a barrier to the surrounding environment. Which of the following statements about lipids BEST supports the argument that lipids help protect the contents of the cell?
Responses
Lipids that are placed in water do not dissolve.
Lipids that are placed in water do not dissolve.
The tail of a lipid is made of carbon and hydrogen.
The tail of a lipid is made of carbon and hydrogen.
Individual lipids in a membrane can rotate freely.
Individual lipids in a membrane can rotate freely.
Lipids are composed of a head and a thin tail
Answers
Lipids helps in protecting the contents of cell because it is hydrophobic , when placed in water they do not get dissolve.
There is a characteristic that unites the various chemicals that make up lipids. Insoluble in water, lipids are hydrophobic ("fear of water"). In a cell, lipids have a wide range of activities. Fat-like lipids, often known as lipid stores, are how cells keep energy for long-term use. For both plants and animals, lipids act as a barrier between them and their surroundings. As an illustration, their water-repellent properties aid in keeping aquatic birds and mammals dry. A significant component of the plasma membrane, lipids serve as the building blocks for numerous hormones. The several types of lipids are fats, oils, waxes, phospholipids, and steroids.
Thus, lipids cell membrane are the structural barrier of cell and helps in protecting its contents .
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What eats a bird that eats a grasshopper?
Answers
Answer:
There are many creatures that eat birds, like cats or bears.
Explanation:
Pretty much any carnivore that can catch a bird can eat it.
Blue bird eat a grasshopper.
Explanation:
Mark at brain list
Explain how different links can show a relation between two species. Describe evidence that shows other correlations and causations between the species.
Answers
Different links show relationships between two species. In the scientific world, there are three types of links, including mutualism, parasitism, and commensalism.
Mutualism is a relationship in which both species benefit. Parasitism is where one species benefits, and the other is harmed. Commensalism is a relationship in which one species benefits, and the other is not harmed or helped.One example of a mutualistic relationship is the bee and flower relationship. Bees collect nectar and pollen from flowers for their food, while at the same time, the bee helps in pollination. The bee gets food from the flower, and the flower is pollinated. This is a mutualistic relationship. A parasitic relationship is the relationship between tapeworms and humans. Tapeworms live inside the host and get their food from the host, thereby, causing harm to the host. Evidence that shows correlation and causation between the species includes physical changes in the organism or adaptations to the environment. For example, an animal that feeds on a certain plant may evolve to have a longer tongue to reach the nectar of that plant. In summary, different links show relationships between species, including mutualism, parasitism, and commensalism. The evidence for the correlation and causation between species includes physical changes or adaptations in the organism or environment.For more questions on species
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What wave travels along the surface of a medium?
Answers
For each disease or disorder, click on the correct inheritance pattern or chromosomal alteration.Cystic fibrosisAUTOSOMAL DOMINANT; AUTOSOMAL RECESSIVE
Answers
Chronic cough, upper respiratory infections, and difficulties clearing Phlegm from the airways are symptoms of the autosomal recessive disease cystic fibrosis.
Phlegm builds up in the lungs and digestive tract as a result of the hereditary disease cystic fibrosis. Infections of the lungs and issues with food digestion result from this. The ailment normally manifests as early childhood symptoms that change from kid to child. Over time, however, the condition slowly deteriorates, causing increased harm to the lungs and digestive system. Unfortunately, life expectancy is decreased despite the fact that there are treatments to help ease the challenges brought on by the condition and make it simpler to live with.
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The table below shows three enzymes found in the human body and the pH of their locations.
Enzyme Body part pH
Ptyalin Mouth 6.5 - 7
Pepsin Stomach 1.0 - 3.0
Trypsin Small intestine 7.5 - 9.0
How will the activity of pepsin change after it moves with the food from the stomach to the small intestine?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
It will increase as the pH increases.
(Choice B)
B
It will slow down because the environment is too basic.
(Choice C)
C
It will decrease because the pH of the small intestine is similar to that of the stomach.
(Choice D)
D
It will adapt to the new environment and continue to work at the same rate.
Answers
B. It will slow down because the environment is too basic.
As the food move from the stomach to the small intestine the activity of pepsin will slow down because the environment is too basic.
Pepsin- Pepsin is a stomach digestive enzyme used to break down proteins in food that has been consumed. Pepsin is produced by the main cells of the stomach as pepsinogen, an inactive zymogen. The stomach's lining's parietal cells release hydrochloric acid, which reduces the pH of a stomach.
Parietal cell- The biggest cells in such glands are called parietal cells, and they are found inside the fundus & body of the stomach. They develop from immature progenitor cells inside the gland isthmus, travel upward into the pit area, and finally migrate downward toward the gland base.
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Forested floodplain wetlands benefit from periodic flooding from rivers. When floodwaters spill into the wetland, they bring water and nutrients and leave both behind. But humans have often cut off floodplains from rivers by building roads, levees, berms, etc. Think about what would happen if a river could no longer flood into these areas. How would the resulting increased amount of water and nutrients in the river affect soils, hydrology, and life downstream?
Answers
The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.
If a river can no longer flood into forested floodplain wetlands due to human interventions, it would have significant consequences for the downstream areas in terms of soils, hydrology, and life.Without periodic flooding, the increased amount of water and nutrients in the river would not be able to disperse and be deposited in the floodplain wetlands. As a result, downstream soils would experience a decrease in nutrient inputs, leading to decreased fertility and altered composition. The absence of regular flooding would disrupt the natural hydrological cycle, reducing the recharge of groundwater and altering the flow patterns in the river system. This could result in decreased water availability, increased erosion, and changes in the overall ecosystem dynamics downstream.The disruption of nutrient flows and hydrological patterns would also have a significant impact on the life forms downstream. Aquatic plants, fish, and other organisms that depend on floodplain wetlands for breeding, feeding, and shelter would face habitat loss and reduced food availability. This, in turn, could disrupt the food chain and impact the abundance and diversity of aquatic and terrestrial species in the downstream areas.The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.For more such questions on flooding
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I need help asap keep words under 250
For this assignment, you will be writing an abstract of a scientific paper. (25 points)
An abstract is a short, concise summary of a scientific study or literature review.
Be sure you summarize each section of the research paper in your abstract.
Keep your abstract under 250 words
Be concise!
Answers
Title: Effects of Mindfulness-Based Interventions on Stress and Anxiety in College Students: A Meta-Analysis
How to write the Abstract:Background: Mindfulness-based interventions (MBIs) have been increasingly used to address stress and anxiety in college students. However, the effectiveness of these interventions remains unclear. This meta-analysis aimed to evaluate the effects of MBIs on stress and anxiety in college students.
Methods: A systematic literature search was conducted, and a total of 12 studies were included in this meta-analysis. The quality of the studies was assessed using the Cochrane Risk of Bias tool. A random-effects model was used to estimate the effect sizes of MBIs on stress and anxiety.
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What are 2 similarities chromosomes you get from parents
Answers
The two similarities between chromosomes that you get from your parents are Genetic Material and Number of Chromosomes.
What more should you know about genetic materials and number of chromosomes you get from parents?In terms of Number of chromosomes: Every Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. Each parent contributes 23 chromosomes to their child, for a total of 46.
in tems of Genetic material: The chromosomes that you get from your parents contain the same genetic material. This is why you look like your parents and why you have inherited some of their traits.
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Shana designed a ramp that would roll a marble from point A to point B. She wants to see if she can use energy to set objects in motion. Where must point A be located in relation to point B in order for a force to act on the marble?
next to it
above it
below it
touching it
Answers
Answer:
touching it i think
Explanation:
Answer:
touching it
Explanation:
Which of the following is true of nudibranchs but not of flatworms?
Nudibranchs possess a mixture of genes from both of their paren
Nudibranchs have half as much genetic material as their parents.
Nudibranchs are genetically identical to one another.
Nudibranchs are all the same color.
please hurry
Answers
Answer:Its d
Explanation:I took the test