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We have been talking about plant and animal cells over the past couple weeks. Plant cells have two organelles that animal cells do not contain. Name the two organelles that can be found in plant cells but not in animal cells and describe what each of those organelles do. Please answer in at least 5 complete sentences!
Answers
Answer:
plant cells have chloroplasts and a cell wall. (they also have one large central vacuole.)
Explanation: Chloroplasts are found only in plant cells. Chloroplasts convert energy from the sun into sugar (glucose). The chloroplast is also where photosythesis happens in the plant cell. The cell wall is also only found in a plant cell. The cell wall protects and mantains the shape of the cell. And you don't have to put this one but the central vacuole is just one big vacuole in a plant cell that stores mainly water and nutrients since plant cells require more water to function, whereas in animal cells they have multiple small vacuoles.
Related Questions
Why are cotyledons green in beans but not in corn?.
Answers
Answer:
Because of the sunlight. When cotyledons are exposed to light, because of the reflectants, they look green. This is because beans reflect the sun's blue and red UV rays, which makes them green.
How does most of the carbon in an organism's body return to the
environment after the organism dies?
A. Decomposers break the body down into simpler compounds.
B. Heat from the sun causes the carbon in the body to evaporate.
C. Geological processes cause the body to turn into a fossil fuel.
D. Rainwater dissolves the carbon in the body and carries it to the ocean.
Answers
Answer:
Decomposers break the body down into simpler compounds.
NEED HELP ASAP PLS!! what are the important characteristics of population? (this is for my environmental science class)
Answers
Answer:
1. Population density 2. birth Rate 3. Death rate 4. Age
Explanation:
Scientists classify clams as consumers. Which observation about clams provides the strongest evidence for this classification?
Answers
Answer:
They eat plants so since they don't make their own food they are a consumer
Explanation:
clams eat algae and algae is a producer it means that primary consumer
DNA is coiled into___.Proteins called____and help to keep the DNA___.
Answers
Answer:
"In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure"
Explanation: I just looked it up-
Create a list of environmental factors that may affect the race of gas production in the aquatic plant in Model I. These factors could become variables in an experiment.
Answers
Environmental factors like light, temperature, water, humidity, and nutrition may have an impact on the aquatic plant's ability to produce gases.
Temperature, food, pollutants, population density, sound, light, and parasites are a few examples of environmental influences. Numerous other types of stress may have effects that are comparable to those produced by the variety of environmental factors that have been demonstrated to induce asymmetry.
Environmental factors have an impact on daily life and are a major contributor to health disparities between regions. Any biotic or abiotic component that affects living creatures is referred to as an environmental factor, ecological factor, or eco factor. The temperature outside, the amount of sunlight, and the pH of the soil and water where an organism dwells are examples of abiotic factors.
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When running, an athlete breathes more quickly and takes larger breaths than at rest. Give a reason for this.
Answers
The athlete's breathing rate increases, and the breaths taken are deeper and larger. This allows more air to enter the lungs and more oxygen to diffuse into the bloodstream
Explanation:
When an athlete runs, their body requires more energy to fuel the muscles involved in the activity. This increased demand for energy is met by the process of aerobic respiration, which requires oxygen to produce ATP, the energy currency of cells.
To meet this increased demand for oxygen, the athlete's breathing rate increases, and the breaths taken are deeper and larger. This allows more air to enter the lungs and more oxygen to diffuse into the bloodstream, where it can be transported to the cells in the body that need it.
Additionally, the increased breathing rate and depth help to remove carbon dioxide from the body, which is a byproduct of cellular respiration. The removal of carbon dioxide helps to regulate the pH of the body fluids and prevents the buildup of excess carbon dioxide, which can cause respiratory acidosis.
Therefore, the athlete breathes more quickly and takes larger breaths during running to meet the increased demand for oxygen and remove excess carbon dioxide, which helps to support the body's energy needs during exercise.
At the beginning of an action potential, ____ ions flow from outside the nerve fiber into the nerve fiber.
Answers
Answer:
Positive Sodium Ions
Explanation:
Positive Sodium is the answer
A tetrahedral die is an equilateral triangular pyramid. The base edge of the tetrahedral die is 26 millimeters and the height is 20 millimeters.
What is the surface area of the tetrahedral die to the nearest ten square millimeters?
Answers
A tetrahedral die is an equilateral triangular pyramid with the base edge of the tetrahedral die is 26 millimeters and the height is 20 millimeters has the surface area of the tetrahedral die is approximately 1350 square millimeters to the nearest ten square millimeters.
A tetrahedral die is an equilateral triangular pyramid. The base edge of the tetrahedral die is 26 millimeters and the height is 20 millimeters. What is the surface area of the tetrahedral die to the nearest ten square millimeters?Surface area of tetrahedral dieTo find the surface area of the tetrahedral die, we need to first calculate the area of the triangular faces and then add them up.
The surface area of a tetrahedral die can be calculated as follows:Surface area of a tetrahedral die = Sum of the areas of all its triangular faces.Area of an equilateral triangle. A tetrahedral die is an equilateral triangular pyramid. An equilateral triangle is a triangle where all its sides and angles are equal. The area of an equilateral triangle is given by the formula:Area of an equilateral triangle = (√3/4) * a² where a is the length of each side of the equilateral triangle. Substituting a = 26mm,Area of the equilateral triangle = (√3/4) * 26²= 338 mm².
The tetrahedral die has four equilateral triangular faces. So, its surface area can be calculated by adding the area of each triangular face. Therefore,Surface area of the tetrahedral die = 4 × area of the equilateral triangle= 4 × 338= 1352 mm²= 1.4 × 10³ mm²Therefore, the surface area of the tetrahedral die is approximately 1350 square millimeters to the nearest ten square millimeters.
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A cladogram is shown below.
a) Why is the amoeba considered an outgroup in this cladogram?
b) What trait does a salmon have that an earthworm does not?
c) What does this cladogram tell you about the evolutionary relationship of the traits of jaws and limbs?
d) A squirrel glider is an organism with jaws, limbs, and hair. It does not use a placenta for reproduction. Where do you think this organism would belong in the cladogram?
Answers
Answer:
a) it is the only unicellular organism in this cladogram
b) a salmon has jaws
c) it tells that before having limbs the ancestors developed jaws as for a feature for the organism to survive easily
d) it is on the same level as the kangroo
As the train rushed down the hill, gravitational potential energy was converted into kinetic
energy.
Which piece of evidence best supports the claim?
A. The speed of the train increased as the height of the
train decreased
B.The people in the train felt like they were being
pushed down at the bottom of the hill,
C.The train kept moving when it reached the flat part of
the track
Answers
Answer:
A. The speed of the train increased as the height of the
train decreased
Explanation:
What are three things you learned about the
planets and their moons from the explorations of Curiosity and other satellites?
Answers
Answer:
I agree with the other person that answered...
Explanation:
I will give you a fun fact though, stars are made up of gasses and energy and Pluto isn't a real planet :)
in meiosis shown in the image, homologous chromosomes separate in step a, which is called ______, and four haploid nuclei are formed in step b, which is called ______.
Answers
In meiosis, homologous chromosomes separate in step a, which is called "anaphase I," and four haploid nuclei are formed in step b, which is called "cytokinesis II."
During anaphase I of meiosis, homologous chromosomes, which consist of one chromosome from each parent, separate and move toward opposite poles of the cell. This ensures that each resulting cell receives only one copy of each chromosome pair.
Anaphase I is a crucial step in meiosis as it ensures the distribution of genetic material between the daughter cells is randomized and contributes to genetic diversity.
Following anaphase I, the cell enters cytokinesis II, the second stage of cell division in meiosis. Cytokinesis II involves the physical separation of the two cells formed after anaphase I, resulting in the formation of four haploid nuclei, each containing a single set of chromosomes.
These nuclei go on to further undergo a process called "telophase II" to form four distinct haploid cells, known as gametes, which are essential for sexual reproduction.
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The tables show the changes in allele frequencies in two different populations of the same species of randomly mating mammals over time. The two different populations inhabit nearby islands that have similar environments. In 2007, a flood destroyed half of the island that population 1 inhabits, resulting in a reduced population of the mammal species.
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Which of the following is the MOST reliable conclusion that can be drawn from analysis of the scenario and the data?
Question 4 options:
Natural selection by bottleneck effect occurred in population 2.
Natural selection by bottleneck effect occurred in population 1.
Genetic drift by bottleneck effect occurred in population 1.
Genetic drift by bottleneck effect occurred in population 2.
Question 5 (1 point)
Answers
The most reliable conclusion that can be drawn is that genetic drift by the bottleneck effect occurred in population 1.
How do we explain?When the population size is significantly reduced, a bottleneck effect occurs. As a result of random events, this may result in the loss of genetic diversity and the random fixation of specific alleles.
Population 1's size was reduced in this instance as a result of the flood that occurred in 2007. According to the differences in allele frequencies shown in the tables, certain alleles in population 1 varied in frequency over time, indicating the influence of genetic drift.
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how does the size of a hydrocarbon molecule affect the volatility of crude oil?
Answers
Answer:
Longer hydrocarbon molecules have a stronger intermolecular force. More energy is needed to move them apart so they have higher boiling points . This makes them less volatile and therefore less flammable .
What is the major difference between an endospore of a bacterium and an exospore of a fungus? 27 Answers AD A Fungal exospores are not for reproduction B Endospore of bacteria are dormant forms which are highly resistant too C Endospores are developed in all bacteria but not all fungi form exospores D Endospores are formed as a mean of reproduction in bacteri
Answers
The major difference between an endospore of a bacterium and an exospore of a fungus is that B, endospores are dormant forms which are highly resistant to environmental stresses, while exospores are not.
What are endospore and exospores?Endospores are formed by some bacteria, such as Bacillus anthracis, as a means of survival in harsh environments. They are metabolically inactive and can withstand extreme temperatures, radiation, and chemicals. When conditions improve, the endospore can germinate and the bacterium can resume its normal life cycle.
Exospores are formed by some fungi, such as actinomycetes. They are not as resistant to environmental stresses as endospores, but they can help the fungus to disperse and colonize new areas.
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A new DNA strand elongates only in the 5' to 3' direction because?
Answers
A new DNA strand elongates only in the 5' to 3' direction because the nature of DNA polymerase and the complementary base pairing rule. DNA polymerase is the enzyme responsible for synthesizing a new DNA strand during DNA replication.
DNA consists of two antiparallel strands, with one strand running in the 5' to 3' direction and the other running in the 3' to 5' direction. During replication, the DNA strands separate, and each serves as a template for the synthesis of a new complementary strand.DNA polymerase can only add nucleotides to the 3' end of a growing DNA strand.
It catalyzes the formation of phosphodiester bonds between the 3' hydroxyl group of the previous nucleotide and the 5' phosphate group of the incoming nucleotide. This results in the elongation of the DNA strand in the 5' to 3' direction.The complementary base pairing rule further ensures the 5' to 3' directionality. Adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C). The new DNA strand is synthesized in a complementary manner to the template strand, with each incoming nucleotide pairing with the appropriate complementary base on the template.
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Use the phylogenetic tree to the right to choose the true statement below.
Answers
The true statement based on the phylogenetic tree is: "Ray-finned fish evolved before sharks."
In the given phylogenetic tree, the branches representing ray-finned fish and sharks originate from a common ancestor.
However, the branch representing ray-finned fish diverges earlier in evolutionary history compared to the branch representing sharks. This indicates that ray-finned fish appeared before sharks in the evolutionary timeline.
Phylogenetic trees illustrate the evolutionary relationships between different species or groups of organisms. The branching patterns in the tree show the common ancestry and divergence of different lineages.
By analyzing the structure of the phylogenetic tree, we can infer the relative timing of evolutionary events and the relationships between different groups of organisms.
In this case, the phylogenetic tree indicates that ray-finned fish evolved before sharks, suggesting that ray-finned fish have a longer evolutionary history and are more ancient than sharks.
It is important to note that this statement does not provide information about the relationship between crocodiles, amphibians, primates, rodents, rabbits, and other groups mentioned in the given options.
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Question
Use the phylogenetic tree to the right to choose the true statement below.
Crocodiles are more closely related to amphibians than to primates.
A. Ray-finned fish evolved before sharks.
B. Rodents and rabbits are most closely related to primates.
C. Amphibians are more closely related to ray-finned fish than to primates.
Explain how stem cells differ from other kinds of cells. Give an example using plantsor animals.
Answers
Stem cells are a special kind of cells due to their ability to duplicate and differentiate in different kinds of cells.
there are different kinds of stem cells. The main diference betwen them is the kind of cells they can differentiate into.
for example, when an embrioyo is develoment, the firs cell that is form after the coito is a totipotent stem cell, because it has the ability to diferenciate in every kind of cell in the body. Afer a few weeks, in bovines it would be aroun 8 days, the cells become pluripotent, because they can generate every cell in the body, but the placent. and when we become adults this cells are know as mesechymal (multipotent), that are cells that can diferenciate in certain kind of tissue
what are the most economically 'productive disasters'?
Answers
Answer:
1. Disasters increase scarcity and reduce the output of economies.
In simplest terms, inputs are necessary for outputs; fewer inputs means fewer outputs. When a disaster damages or destroys resources – whether labor, capital, or natural resources – total production in the economy must fall.
The production possibilities frontier (PPF) is used by economists to model “production possibilities” – the output possible in an economy making full use of its available resources. The PPF shrinks when disasters reduce the availability of the resources used to make goods and services.
Explanation:
One of the most important forces that led to the expansion of urban areas is the
O airplane
O automobile
O city bus
0 train
Answers
Answer:
The answer is train. And if not then its automobile.
Explanation:
Trains have been the first thing for transportation and for the trade company they helped you get place to place and they went a long way.
-Hope this helps!
- Justin :)
in the early 2000s, white nose fungus caused a mass die-off of native american bat species. those bats that survived will continue the population with their own allele frequencies. what type of genetic drift is this?
Answers
A bottleneck effect is the form of genetic drift that led to the widespread loss of Native American bat species.
When populations experience a significant reduction, genetic bottlenecks develop. Biodiversity is constrained by bottlenecks. due to the fact that just a small portion of the original population survived.
The loss of genetic diversity that happens when a significant percentage of a population has been wiped out by an outside factor is known as the bottleneck effect. The few individuals that have the ability to reproduce transfer the trait to all of their progeny, enabling them to flourish in the absence of competition from enormous populations.
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Understand biological structures and the different human body systems
Answers
Answer:
The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory system, the digestive system, the excretory system, the nervous system, the endocrine system, and the reproductive
hope it helps you
what is the genotype of parent 2?
Answers
Answer:
Scientists use the term genotype to refer to the combination of mother and father genes in the person's make up. AA, AO and OO are the 3 genotypes that may result from the mating of the parents in the example above. Scientists use the term phenotype to refer to what gene is actually expressedwhat is the best way to revise for a exam??
Answers
Answer:
tbh stay ready ask your teacher for extra help and work so you can work hard and do not to stress your self out and if you fail you can learn off of your mistake and your teacher will notice you really wanted to pass because the extra steps you took .Look and your fails like a win because you can learn off of it.
Explanation:
PLEASE ANSWER QUICK, I’LL GIVE BRAINLIEST TO THE CORRECT ONE!
1. What are the independent and dependent variables in each of the experiments?
2. What information should be added to the diagram to give the reader a better understanding of how these experiments
were conducted?
3. What items should have been CONTROLLED in the experiments?
4. How much confidence would you have in the conclusion of experiment 3 if you found out that the temperature was not
controlled? Explain your reasoning.
Answers
experiment 2 : independent is presence or absence of fan, dependent is volume of water lost
experiment 3 : independent is light intensity, dependent is volume of water lost
The independent variables are temperature, airflow, and light intensity and the dependent variable is the volume of water lost.
The initial volume of water should be known.
The initial volume of water should have been controlled.
The results of experiment 3 are not valid if the temperature is not controlled.
What is evaporation?
The surface phenomenon in which a liquid is converted into a vapor is defined as evaporation. The surface phenomenon means that only the exposed layer of the liquid will be affected.
This is different from boiling as boiling is a bulk phenomenon in which the entire volume of the liquid is affected and converted to vapor.
Also, unlike boiling, evaporation can happen at any temperature but it is faster at high temperatures. Evaporation is also affected by the speed of the wind, light intensity, and humidity.
Therefore, in this experiment, where the rate of evaporation in different variables is being measured,
The independent variables are temperature, airflow, and light intensity and the dependent variable is the volume of water lost. The initial volume of water should be known. The initial volume of water should have been controlled. The results of experiment 3 are not valid if the temperature is not controlled.
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You wish to determine whether a tall pea plant is homozygous or heterozygous for tallness. What
cross should you perform to arrive at your answer? Explain your choice of cross.
Answers
Answer:
Bb x Bb or BB x BB or bb x bb
Explanation:
B for dominant
b for recessive
When an organism is heterozygous and is crossed, 2 of the offspring out of the 4 will also share the same trait. So, if two of the tall pea plants are crossed, if they are heterozygous 2 of their offspring will also be tall pea plants and if they are homozygous all of their offspring will be tall pea plants.
Cross:
Bb is the tall pea plant if it is heterozygous.
Bb x Bb
B b B B
B BB Bb for homozygous : B BB BB
b Bb bb B BB BB
2/4 are tall pea plants all are tall pea plants
You could pick either cross, they both will give you the right answer answer:
If you use a heterozygous cross and 2 offspring are tall pea plants (same as the parents) then the trait is heterozygous.
If you use a homozygous cross and all offspring are tall pea plants (same as the parents) then it is homozygous.
Note that if the heterozygous cross doesn't have 2 tall offspring then it is homozygous and similarly if the homozygous crossed offspring does not yield all tall pea plants then the gene is heterozygous.
Compare and contrast convergent and divergent evolution. Provide an example for each.
Answers
Answer:
Divergent evolution occurs when two separate species evolve differently from a common ancestor. Convergent evolution occurs when species have different ancestral origins but have developed similar features.
example i guess: the similarities between the hummingbird and the hummingbird moth.
Can i get the answers for these?
Answers
Which statement is the best example of nonscience?
A. People with wheat allergies may benefit from remedies such as activated charcoal and apple cider vinegar.
OB. Stalks of wheat are displayed during harvest season as symbols of fertility, life, and abundance.
OC. Selective breeding and genetic modification produce wheat grains with higher protein content.
OD. Wheat plants grow taller when they receive plenty of water and sunlight. for my future and present 10th graders
Answers
The statement that is the best example of nonscience is Stalks of wheat are displayed during harvest season as symbols of fertility, life, and abundance. The correct option is B.
What is non-science?Non-science is a term used to show facts and beliefs that are not proven in science but are prevalent due to older ideas and customs. They are not true, but people believe in them.
Like, here stalk of wheat displayed as a sign of fertility and abundance, is just a belief but is not proven. It is an example of non-science.
Thus, the correct option is B.
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