Which of the following statements about cell differentiation is true?
A. Cell differentiation occurs only in adult organisms
B. Cell differentiation cannot be affected by the environment
C. Cells differentiate because the dna in each cell of an organism is different
D. Cells differentiate because different areas of the dna are activated in each cell type.
Answers
Answer:
I think is B, Cell differentiation cannot be affected by the enviroment
Related Questions
Find a second pair of model homologous chromosomes, one with the L allele and the other with the I allele. Model mitosis for a cell with two pairs of homologous chromosomes.
Answers
After mitosis, two identical diploid cells are formed. In the exposed example, each cell has a chromosome with the L allele and another chromosome carrying the l allele.
Mitosis is a process by which, from a diploid somatic cell (2n), two daughter diploid cells (2n) are produced.
First occurs duplication of the cell content, and then the separation into two new cells happens.
Mitosis occurs in only one phase.
• In the prophase, it occurs chromosomes condensation and nuclear membrane breaks.
• During the metaphase, chromosomes are taken toward the center of the cell by the spindle apparatus. Once in the equatorial plane, chromosomes line up.
Each chromatid joins with a microtubule of opposites poles.
• In Anaphase, chromatid sisters separate. The bonds that were keeping them together break, and each of them migrate to the opposite poles.
• In telophase, duplicated chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole.
• Finally, cytokinesis occurs.
In the exposed example, considering only the chrosomomes carrying the L and l alleles, each daughter cell ends with two homologous chromosomes,
one of them with the recessive allele the other one with the dominant alleleYou will find the image in the attached files.
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LOL HELP PLS- :))))))))))))))))))))
Answers
Answer:
vitamin koagulation
Explanation:
that is what the full word is called. sorry don't know how to explain it.
What determine the code or information of DNA molecule?
Answers
tamara, an african american, is born with a genetic disorder that causes her body's red blood cells to become hook-shaped instead of being disk shaped, impairing the normal oxygen-carrying capacity of the cells. the doctors explain to tamara's parents that this condition makes her resistant to malaria, however. which of the following disorders is tamara most likely suffering from? Multiple Choice Tay-Sachs disease Sickle-cell anemia Leukemia Huntington's disease
Answers
Answer:
Tamara is most likely suffering from Sickle-cell anemia.
What is the chemical reaction done by plants so that they and us can have energy
Answers
Answer:
Are you talking about photosynthesis. The chemical reactions plants go through to have energy in the form of glucose.
What process releases
the phosphate minerals?
Answers
Answer: weathering
Explanation:
Mrs. Ever hart developed the theory that all bulldogs are great pets . After all her bulldog Meatball is a wonderful dog .... do that sound like a statement or scientific theory .?
Answers
Question 6
Put the steps of the Gram stain procedure in the correct order
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Gram staining is a laboratory test that can help diagnose the presence of the bacterial infection quickly and it also helps to diagnose the harmful bacteria.
Under Gram Stain: There are certain stain which change colours under specific type of stains and are classified as Gram positive and Gram negative based on this.
The steps of Gram Stain Procedure in order are
1. Applying a primary stain (crystal violet).
2. Adding a mordant- generally-IODINE
3. Rapid decolorization with ethanol, acetone or a mixture of both.
4. Counterstaining with safranin.
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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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Explain why T cells are more likely to develop into T cells than T cells
Answers
Answer:
plssssssszz I beg u
Explanation:
mark me as brainlist
(A)
A. aa
C. A
AA
A
The gametes from the
parent in this image
will have what alleles
for the trait shown?
B. Aa
D. a
Answers
Answer:
c. A
Explanation:
hope this helps!
PLEASE HELP THANK YOUUU
Answers
Answer:
west side
Explanation:
you need to look carefully it's easy
Which country is one of the world's largest suppliers of uranium?
A United States
B Namibia
C Egypt
D Brazil
Answers
United States is one of the world's largest suppliers of uranium.
Thus, Uranium is as prevalent in the Earth's crust as tin, tungsten, and molybdenum, and it can be found in most rocks in quantities of 2 to 4 parts per million. Seawater contains uranium, which can be extracted from the oceans.
German chemist Martin Klaproth made the discovery of uranium in the mineral pitchblende in 1789.
In supernovae, uranium is thought to have been created about 6.6 billion years ago. Although it is uncommon in the solar system, the Earth's slow radioactive decay today serves as the primary source of heat, creating convection.
Thus, United States is one of the world's largest suppliers of uranium.
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Answer:
Namibia
Explanation:
Which of the following describes the climate of the chaparral?
O Mediterranean climate; hot, dry summers; mild, wet winters
O relatively dry climate; mild, dry summers: cold, dry winters
O desert-like climate; hot, dry summers: cool, dry winters
O extremely wet climate: cold, wet winters; cool, rainy summers
Answers
Answer:
Mediterranean climate; hot, dry summers; mild, wet winters
Answer:
Mediterranean climate; hot, dry summers; mild, wet winters
Explanation:
4. Shows each line represented as a pair of shared electrons but is not truly three-dimensional:
5. Shows three dimensions but no interior bonds:
6. Is used in kits and shows a general shape:
Answers
Answer:
4. Shows each line represented as a pair of shared electrons but is not truly three-dimensional: Structural
5. Shows three dimensions but no interior bonds: Space Filling
6. Is used in kits and shows a general shape: Ball and Stick
Explanation:
Answer:
structural
space filling
ball and stick
Explanation:
edge 2022
What is the purpose of accessory pigments within the leaves of plants?
Answers
Answer: Helps plants absorb additional light
Explanation: To optimize the amount of photosynthesis they can achieve, plants must produce these accessory pigments.
______ % of scientists accept the Theory of Evolution?A. 53%B. 35%C. 78%D. 97%
Answers
The correct answer is D. 97%. Almost all scientist accept evolution. As a proof, it is common to say that nothing in biology has sense if it is not framed in an evolutionary thinking.
Which of the following is the characteristic of both weathering and erosion
Answers
Answer: It occurs naturally
When jaw become large enough to hold the permanent teeth . The milk teeth fall and permanent teeth appear
Answers
The "exfoliation" or "shedding" of milk teeth is the name of the procedure.
What is the Dentition of Humans?The primary and permanent tooth sets make up the human dentition. Maxillary (upper) and Mandibular (lower) are the two opposing arches in which teeth are arranged. These can be split into their left and right halves along the midline (mid-sagittal plane).
Four Different Teeth Types and Their Purposes
The majority of individuals have 32 permanent adult teeth, which can be classified into four groups:
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Explain why detritivores, decomposers and omnivores are not assigned trophic level
Answers
Answer:
They can be found in several trophic levels, as they are related with several trophic level, hence, they cannot be placed on a specific trophic level.
Explanation:
A trophic level is a specific position occupied by a group of organisms on a good chain in relation to their nutrition.
Dentrivores feed on the waste of other organisms and cannot be really placed on a specific trophic level, likewise decomposers, of which they feed and decompose the body of organisms.
Omnivores feed on both plants and animals, which includes producers and consumers. Placing omnivores on a specific trophic level would not be really straightforward also.
What kind of molecules can diffuse.
Answers
Answer:
h²o and ethanol
〜(꒪꒳꒪)〜
Arrange the rock layers from oldest to youngest . Re-examine The rock outcrops if you need to. Record the order in the student guide.
CONGLOMERATE,
LIMESTONE WITH CRINOID,
SANDSTONE WITH TRILOBITE,
SHALE WITH AMMONITE.
Answers
Answer:
Youngest to Oldest
Conglomerate
Shale with ammonite
Limestone with crinoid
Sandstone with trilobite
The spring in the diagram is replaced with another spring that has a spring constant of 30 N/m. What is the stretch of this new spring when a 5-N block is attached?
Answers
The stretch of the new spring when a 5-N block is attached is approximately 0.167 meters or 16.7 centimetres.
To determine the stretch of the new spring when a 5-N block is attached, we need to consider Hooke's Law, which states that the stretch of a spring is directly proportional to the applied force.Hooke's Law is expressed as F = kx, where F is the applied force, k is the spring constant, and x is the stretch or displacement of the spring.Given that the new spring has a spring constant of 30 N/m and a 5-N block is attached, we can rearrange Hooke's Law to solve for x:x = F/kx = 5 N / 30 N/mx ≈ 0.167 m or 16.7 cmTherefore, the stretch of the new spring when a 5-N block is attached is approximately 0.167 meters or 16.7 centimetres.For more questions on Hooke's Law
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How are the animals in the Kingdom Animalia classified? Your answer should include groupings from both traditional methods (based on morphology) as well as molecular phylogenies (based on genetics).
Answers
There are six additional tiers of classification for the creatures in the kingdom Animalia based on comparable traits. The phylum, class, order, family, genus, and species fall under this category.
What is meant by Kingdom Animalia?Members of the Kingdom Animalia, commonly known as the Metazoa, include all living things. The Kingdom Monera, which contains bacteria and blue-green algae, and protists do not exist in this one (Kingdom Protista, includes unicellular eukaryotic organisms).Kingdom Animalia is a taxonomic kingdom that includes both living and extinct animals. Eukaryotic, multicellular, heterotrophic, without a cell wall, and primarily motile organisms make up this kingdom's members. Non-chordates comprise the phyla Porifera, Coelenterata, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, and Hemichordata. Non-Chordates have the following characteristics generally: These are cylinder-shaped, triploblastic, coelomate, or pseudocoelomate creatures.Fish, amphibians, reptiles, mammals, and birds make up the five common classes of the phylum chordata, or group of vertebrate creatures.To learn more about Kingdom Animalia, refer to:
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Sea anemones are predatory invertebrates with stinging tentacles that can paralyze many sea animals. The clownfish is immune to the sting of the sea anemone and actually lives among its tentacles. The relationship is mutually beneficial—the clownfish often lures meat-eating animals over to the anemone, and the anemone benefits from the meal. The clownfish often gets to eat leftovers from the anemone’s meal.
When the clown fish is ready to lay eggs, it lays them near a sea anemone. How’s this a reproductive strategy?
Answers
The clownfish's reproductive strategy of laying eggs near a sea anemone is a form of protection and survival for its offspring.
By laying their eggs in close proximity to the sea anemone, the clownfish provide their eggs with a safe place to develop. The sea anemone's tentacles are a powerful defense mechanism that can fend off potential predators that may try to harm or eat the eggs.
In addition to protection, the clownfish also benefit from the relationship with the sea anemone during the reproductive process. The anemone provides a clean surface on which the eggs can be attached and also helps to oxygenate the surrounding water, which is important for the development of the eggs.
The anemone's tentacles also help to keep the eggs free of harmful parasites and fungi. Overall, the clownfish's reproductive strategy of laying eggs near a sea anemone is a mutually beneficial relationship that helps to ensure the survival of the clownfish offspring.
The protection and benefits provided by the sea anemone help to increase the chances of the eggs hatching successfully, resulting in a higher survival rate for the next generation of clownfish.
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indicate structural adaptations of Mitochondria for its function
Answers
Mitochondria(Mt) are the cell's "power stations" because the energy currency for the metabolic processes in the cell is synthesised inside this organelle via aerobic respiration. This process is known as oxidative phosphorylation. Mt is a double membraned, semi-autonomous organelle.
The mitochondrion's structure is specially tailored to the function it performs:
The outer membrane contains carrier proteins that allow pyruvate produced during glycolysis to be transported from the cytoplasm.The electron transport chain(a series of protein complexes) and ATP synthase are located in the inner membrane to transfer electrons and ATP production respectively.The inner membrane is folded into numerous pockets called cristae, which raises the surface area: volume ratio.When proton accumulation occurs, the small intermembrane space between two membranes increases the hydrogen gradient.Matrix is the core chamber containing the necessary enzymes and pH for the Krebs cycle(oxidation of acetyl-CoA derived from pyruvate) to take place.To learn more, refer:
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one of the symptoms oh high salt concentrations in soil is plants that appear dehydrated even when they are receiving adequate water. how can you explain this phenomena using what you observed in the root cells of the salt-sensitive plants?
Answers
High salt concentrations in soil is plants that appear dehydrated even when they are receiving adequate water because the salts comes from the irrigation activity.
What does salt do to plants and their roots?The more salt that accumulates in the soil from irrigation and natural occurrence in the soil. We applied water to the plants in order to maintain the water content in the plants and make them hydrated. Sometimes the water has high salt concentration that negatively affected plant growth. Salinity greatly affects production in crops and trees by preventing the nitrogen uptake, reducing the growth and also stop the reproduction process in plant. Chloride salts are the toxic ion to plants. When its concentration increases in the soil, the plant is poisoned and dies in the end.
So we can conclude that High salt concentrations in soil is plants that appear dehydrated even when they are receiving adequate water because the salts comes from the irrigation activity.
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Which of these planets has characteristics most similar to Saturn?
Jupiter, Uranus, and Neptune
Mercury, Venus, and Earth
O Venus, Earth, and Mars
Earth, Mars, and Saturn
Answers
Hope this helped!
The graph shows the results of a photosynthesis investigation on algae.
Which question was the scientist most likely studying? (SC.7.N.1.4)
A. Why is the rate of photosynthesis different in high light intensity from low light intensity?
B. Why does increasing the light intensity increase the rate of photosynthesis in algae?
C. How is the rate of photosynthesis in algae at two light intensities affected by different temperatures?
D. How does increasing the rate of photosynthesis in algae change its temperature?
Answers
A. The rate of photosynthesis is different in high light intensity compared to low light intensity primarily due to the availability of energy for the photosynthetic process.
In high light intensity, there is an abundance of light energy, specifically photons, reaching the photosynthetic pigments in plant cells.
B. Increasing light intensity increases the rate of photosynthesis in algae primarily because the light is a crucial factor in the light-dependent reactions of photosynthesis.
Algae, like plants, contain pigments such as chlorophyll that absorb photons of light energy. When light intensity increases, there is a higher influx of photons available for absorption by these pigments.
C. The rate of photosynthesis in algae at two light intensities can be affected by different temperatures. Generally, temperature influences the enzymatic reactions involved in photosynthesis.
At lower temperatures, the enzymatic activity tends to be slower, which can limit the overall rate of photosynthesis. As the temperature increases within an optimal range, enzyme activity and reaction rates typically rise, leading to an increase in the rate of photosynthesis.
D. Increasing the rate of photosynthesis in algae can change its temperature due to the metabolic processes involved. Photosynthesis is an endothermic process, meaning it absorbs energy from the environment.
As the rate of photosynthesis increases, more energy is absorbed from the surroundings in the form of light.
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Euploidy in plants with examples
Answers
Answer:
This is a chromosomal variation that involves the entire set of chromosomes in a cell or an organism.
e.g. polyploid,e.t.c.
Explanation: