Each body part or system to the layer of the embryo from which it forms are (mesoderm, voluntary muscles, skeletal system); (ectoderm, cells of the nervous system, outer skin); (endoderm, gut, digestive organs).
The middle layer of the three germ layers, the mesoderm, forms during gastrulation in the very first stages of most animals' embryonic development. The ectoderm is the outer layer while the endoderm is the inner layer. Mesenchyme, mesothelium, non-epithelial blood cells, and coelomocytes are all produced by the mesoderm. Coels are lined by mesothelium. In a process known as myogenesis, mesoderm divides into septa (cross-wise partitions) and mesenteries (length-wise partitions), Mesenchyme primarily performs the function of myogenesis. Through intercellular signaling, the mesoderm separates from the rest of the embryo, and an organizing center then polarizes the mesoderm. The areas where GSK-3 shields beta-catenin from deterioration in turn dictate the location of the organizing center. The co-factor beta-catenin changes the activity of the transcription factor tcf-3 from repressing to activating, triggering the production of gene products essential for gastrulation and mesoderm development.
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During normal cell division, a parent cell having four chromosomes in G1 will produce two daughter cells, each containing ______.
How is Cytochrome C, which is an important enzyme in cellular respiration, used to provide evidence for evolution. bones (homologous structures) are used for similar uses if the organisms are more closely related bones (homologous structures) are used for similar uses if the organisms are more closely related sections of DNA are more similar in organism more closely related. sections of DNA are more similar in organism more closely related. organisms that are more closely related are found with similar embryonic structures. organisms that are more closely related are found with similar embryonic structures. fossils in various layers are more closely related if they are in the same layer
Answer:
Sections of DNA are more similar in organism more closely related
Cytochrome c is used to provide evidence for evolution because most animals have this protein and is has undergone very little changes in these organisms such that more closely related species have the most similarity in amino acid sequence of cytochrome c
Explanation:
Cytochrome c is a protein found in mitochondria and is an important enzyme in cellular respiration. Cytochrome c is a highly conserved (have undergone very little changes) protein that in found in many different species of organismsmsuch as plants, animals, and many unicellular organisms. Cytochrome c is made up of about 104 amino acids linked together by peptide bonds. Being a small-sized molecule (molecular weight about 12,000 daltons) also makes it easier for evolutionary studies to be conducted on it.
Organisms that are most closely related have the most similarity in the amino acid sequence of the cytochrome c molecule. The amino acid sequences in cytochrome c molecule present in organisms is as a result of the information in their DNA.Thus, sections of DNA are more similar in more closely related organisms.
Tertiary consumers are always the final step in a food chain.
TRUE
FALSE
Answer:
flase
Explanation:
Answer:
False
Explanation:
The final step in a food chain are decomposers.
A friend of mine came to see me one day and told me a story of how he met his identical twin that he never knew about. When I questioned him about the details, I got some information about the two men.
John Smith (my friend)
DOB: 11/12/77
Height: 6’1
Eyes: Brown
Hair: Brown
Dave Jones (suspected twin)
DOB: 11/11/77
Height: 6’1
Eyes: Brown
Hair: Brown
What should I tell him about his twin?
Answer:
1. Ask him If he is a blood related twin.
2. Ask him where his twin was this whole time
3. Tell him he should ask himself if he done anything good to help the twin yet
Explanation:
А___level describes an organism’s___position in
food chain.
You are studying a biochemical pathway in the mold Neurospora where enzyme 1 converts the initial substrate into intermediate substrate A; enzyme 2 converts intermediate substrate A into intermediate substrate B; enzyme 3 converts intermediate substrate B into intermediate substrate C; and enzyme 4 converts intermediate substrate C into the end product, an amino acid that is essential for growth. You isolate a mutant that is unable to grow on minimal media. Which data would provide the strongest support for the hypothesis that this mutation occurred in the gene that codes for enzyme 2
Complete question:
You are studying a biochemical pathway in the mold Neurospora where enzyme 1 converts the initial substrate into intermediate substrate A; enzyme 2 converts intermediate substrate A into intermediate substrate B; enzyme 3 converts intermediate substrate B into intermediate substrate C; and enzyme 4 converts intermediate substrate C into the end product, an amino acid that is essential for growth. You isolate a mutant that is unable to grow on minimal media. Which data would provide the strongest support for the hypothesis that this mutation occurred in the gene that codes for enzyme 2?
a. The mold can grow on rich medium plus intermediate substrate C, but not on rich medium plus intermediate substrate B.
b. The mold can grow on minimal medium plus intermediate substrate B, but not on minimal medium plus the initial substrate.
c. The mold can grow on minimal medium plus intermediate substrate B, but not on minimal medium plus intermediate substrate A.
d. The mold can grow on rich medium plus intermediate substrate D, but not on rich medium plus intermediate substrate C.
e. The mold can grow on minimal medium plus intermediate substrate A, but not on minimal medium plus intermediate substrate C.
Answer:
c. The mold can grow on minimal medium plus intermediate substrate B, but not on minimal medium plus intermediate substrate A.
Explanation:
Let us first diagram the pathway for a better understanding.
The normal organism produces four enzymes that convert substrates in the medium that allow it to survive, grow, and reproduce.
initial substrate ------------> A ----------------> B ----------------> C ----------------> AA
Enzyme 1 Enzyme 2 Enzyme 3 Enzyme 4
Any mutation on the Neurospora´s enzymes will not let the organism grow on the minimal medium because it will not be able to convert the minimal substrate into the following one, because the mutated enzyme will not accomplish its original function.
So if the mutation occurs in enzyme 1, the organism will not be able to convert the initial substrate into intermediate substrate A. And the rest of the reaction will not be possible either because of the lack of substance A.initial substrate -----X----> A -------X-----> B ------X--------> C ------X-------> AA
mutated Enzyme 1 Enzyme 2 Enzyme 3 Enzyme 4
If the mutation occurs in enzyme 2, the organism will not be able to convert the intermediate substrate A into intermediate substrate B. And the rest of the reaction will not be possible either because of the lack of substance B.
initial substrate ------------> A -------X--------> B -------X------> C --------X-----> AA
Enzyme 1 mutated Enz. 2 Enzyme 3 Enzyme 4
If the mutation occurs in enzyme 3, the organism will not be able to convert the intermediate substrate B into intermediate substrate C. And the last reaction will not be possible either because of the lack of substance C.
initial substrate ------------> A ----------------> B -------X--------> C -------X------> AA
Enzyme 1 Enzyme 2 mutated Enz. 3 Enzyme 4
And if the mutation occurs in enzyme 4, the organism will not be able to convert the intermediate substrate C into the essential amino acid.
initial substrate ------------> A ----------------> B ----------------> C -------X-------> AA
Enzyme 1 Enzyme 2 Enzyme 3 Mutated Enz. 4
But, if we artificially add to the medium the substrate that should be produced by the original enzyme (and that is not converted because of the mutation), then the organism will grow and survive because the other enzymes will be able to produce the essential amino acid.
So, if enzyme 2 is the only enzyme mutated, the organism will not be able to live in a medium with substrate A because the mutated enzyme will not convert the substrate A into B. There will not be B substrate in the medium, and the other enzymes will not produce the essential amino acid. So if the mutation occurs in enzyme 2, substrate A is useless to the organism because it will not survive.
But if we add the intermediate substrate B to the medium, the organism will survive. In a medium with substrate B, all the other reactions will be possible, and the organism will get the essential amino acid. The artificial addition of B substrate will replace the function of the original enzyme 2 -which is the one that converts A into B-.
i need help with #3 bad please i’ll give u a brainliest if u give me the correct answer i promise
Answer:
Its A
Explanation:
If you look closeley at the modle you can start to notice a pattern. Therefore a repeating structure. And they arent moving freely since they are combined into a compound to create NaCi.
Someone please help me !!
Answer:
A
Explanation:
The male part of a plant consists of the
A. stamen
B. ovary
Answer:
A
Explanation:
The female part is the ovary not the stamen. Stamen is the one which is a part of a male plant or a flower.
In bacterial cells treated with Mupircin, would you still expect to find large or small amounts of mRNA inside of the cell?
Answer:
Yes.
Explanation:
Yes, we can expect to find small amounts of mRNA inside the bacterial cell because the Mupirocin kills the bacteria by inhibiting transfer RNA. Mupirocin is an antibiotic used to kill the bacteria present on the skin. It destroys the cellular structure of bacteria and prevent the bacteria from causing more infection. Mupirocin do its antimicrobial activity by inhibiting isoleucyl-transfer RNA, as a result inhibiting of bacterial protein and RNA synthesis occurs.
Which of the following happens during interphase? A prophase B cell growth C cytokinesis D cell division
Answer: B Cell growth brainliest?
Explanation:
do people consume little or much nowadays? give examples
Which of the following is not an example of coevolution? A. Prey evolve faster running to escape, and predators evolve to smarter at catching prey. B. Predators evolve heavy jaws to crunch the bones of herbivores, and herbivores evolve thick fur for warmth. C. Plants evolve chemical defenses and herbivores evolve ways to neutralize the chemicals. D. Insects evolve green wings to blend into the environment, and predators evolve better eyesight to find the prey. Explain why.
The statement 'predators evolve heavy jaws to crunch the bones of herbivores, and herbivores evolve thick fur for warmth' is NOT an example of coevolution.
Coevolution is an evolutionary process where two or more species evolve in a parallel manner.Coevolution is caused by an evolutionary race between species.In general, coevolution is caused by selective pressures between one taxonomic group on another.In conclusion, the statement 'predators evolve heavy jaws to crunch the bones of herbivores, and herbivores evolve thick fur for warmth' is NOT an example of coevolution.
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Scientists hypothesize that cabbage, broccoli , cauliflower, and radishes developed along a common evolutionary pathway. Which observation would best support this hypothesis?
Answer:
its D
Explanation:
The presence of vascular tissue allowed plants to ________. Group of answer choices transport nutrients and water from below-ground tissues to above-ground tissues and grow taller absorb nutrients from the soil and form a symbiosis with fungi transport nutrients and water from below-ground tissues and use them to protect developing embryos release toxins into the soil that reduced competition with other plants by poisoning nearby plants
Answer:
transport nutrients and water from below-ground tissues to above-ground tissues and grow taller.
absorb nutrients from the soil
Explanation:
The vascular tissues of plants is made of specialized conducting tissues the xylem and phloem.
This tissues form a continuous systems through the plant body and provide pathways for the transport of water, nutrients, signaling molecules and also provide support for plant body against mechanical stresses. The xylem transport water and nutrients from the roots to other parts of the plant while the phloem transport photosynthate the product of photosynthesis from the source where it is produced to other plant part.
Hi i'm a student and i need help what is
How did you do? Rate your work on a scale of 1 to 5, with 5 as the highest score. Then write a brief evaluation of your work below. Note what you learned and what challenged you. thanks for the help
Answer:
Put- I think I did good. I rate my work a 5.
Explanation:
It’s asking you how did u do on the questions u just got asked if got them correct then u would put what I have as the answer if u didn’t then say the opposite. And then for the what did u learn part I just don’t put nothing lol.
Answer:
I think I did a 4.5 because it was kind of easy but it was a also a little hard. I didn't really have any difficulties but just the fact on how long it took to complete.
Explanation:
How are gravity and friction similar?
Answer:
gravity and friction is similar cause one of the main things they have in common is when you have friction that's gravity pulling you or they thing down.
Explanation:
to be honest I just thought of this of the top of my head so I hope it helped in some ways.
why are plate movements of convection important in earth science
The High Plains have over 20,000 ____________, that are important stopover habitat for migratory birds like ducks and geese.
Answer:
Playa lakes.
Explanation:
A habitat can be defined as the natural living location or place of both living and non-living organisms. Some of the main components that makes up a habitat required for an organism to survive includes space, shelter, water and food.
Migratory birds refers to a group of bird leaving there natural living location or place in search of resources such as food and water in order to survive.
The High Plains have over 20,000 playa lakes, that are important stopover habitat for migratory birds like ducks and geese in search of scarce feeding resources which includes water and food. Playa lakes comprises of living organisms such as invertebrates, seeds and plants, that provides the optimum level of energy required by the migratory birds that are flying from one location to another.
Why is it important for soil to contain nitrogen, phosphorus, magnesium, and potassium??
Answer:
Soil is one of the main sources of nutrients needed by plants in order for them to grow. Nitrogen is used by plants for lots of leaf growth and good green color. Phosphorous is used by plants to help form new roots, make seeds, fruit and flowers. Potassium helps plants make strong stems and keep growing fast. It's also used to help fight disease. Magnesium is the central core of the chlorophyll molecule in plant tissue.
Explanation:
Hope this helped a little bit.
Answer:
Explanation:
1.Without enough nitrogen in the soil the plant cannot grow taller, or produce enough food.
2.phosphorus results in higher grain production, improved crop quality, greater stalk strength, increased root growth, and earlier crop maturity. That is important because crops take up phosphorus only from the soil solution.
3.The role of Magnesium in the soil is the central core of the chlorophyll molecule in plant tissue. Thus, if Mg is deficient, the shortage of chlorophyll results in poor and stunted plant growth. Magnesium also helps to activate specific enzyme systems.
4. Potassium is a critical nutrient that plants absorb from the soil, and from fertilizer. It increases disease resistance, helps stalks to grow upright and sturdy, improves drought tolerance and helps plants get through the winter. Potassium triggers activation of enzymes and is essential for production of (ATP).Both uptake of water through plant roots and its loss through the stomata are affected by potassium.
Hope this helped!!!
Hair color, eye color, height are all examples of what?
Answer:
They are all examples of physical traits.
what caused the three kinds of rocks to be different from one another
Answer:
The heat and pressure.
Explanation:
Heat and pressure caused the three rock types to change, as well as weathering and erosion.
Answer:
Different rocks have different characteristics because of their minerals, the ways in which the rocks were formed, and the processes that acted on the rocks since they were formed.
Explanation:
Hope this helped!!!
For what cellular function does the breathing rate help regulate?
Answer: The respiratory system works with the circulatory system to provide this oxygen and to remove the waste products of metabolism. It also helps to regulate pH of the blood. Respiration is the sequence of events that results in the exchange of oxygen and carbon dioxide between the atmosphere and the body cells. The main purpose of respiration is to provide oxygen to the cells at a rate adequate to satisfy their metabolic needs. This involves transport of oxygen from the lung to the tissues by means of the circulation of blood. brainliest?
Explanation:
Identify which of the following statements are true about plant and animal cells. Select all that apply.
a. Plant cells have chloroplasts.
b. Plant cells have one large vacuole, while animal cells have several smaller vacuoles.
c. Mitochondria can only be found in animal cells.
d. Cytoplasm can only be found in plant cells.
e. Plant cells have cell walls.
Answer:
A-True
B-True
C-False
D-False
E-True
Explanation:
The true statements about plant and animal cells are:
Plant cells have chloroplasts.Plant cells have one large vacuole, while animal cells have several smaller vacuoles.Plant cells have cell walls.CELL:
Cell is regarded as the basic and fundamental unit of life according to the cell theory. Every living organism must possess a cell, which contains organelles responsible for performing specific tasks. Cells of plants and animals are different in some ways and similar in other ways. Some of the true facts about plant and animal cells in accordance to this question are:Plant cells have chloroplasts while animal cells do not. This is why plant cells can synthesize their own food via photosynthesis. Plant cells have one large vacuole located at the centre of the cell while animal cells have several smaller vacuoles scattered throughout the cell.Plant cells have cell walls while animal cells do not. The cell wall of plants is made up of cellulose and gives the cell shape and strength.
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Where in the plant does photosynthesis occur? *
A. Leaves
B. Flower
C. Roots
D. Stem
Answer:
It occurs in the leaves
A. Leaves
Explanation:
please help!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Sturgeon and blue crabs
Answer:
Sturgeon and blue crabs
Which field of biology has caused some ethical concerns?
A. biotechnology
B. ecology
C. molecular biology
D. evolution of disease
Answer:
d
Explanation:
Explanation:
The development and regulation of biotechnology has triggered many discussions from different academic fields, such as economics, law, politics and even history. Specifically, however, the genetic engineering of living cells, plants, animals and human beings has brought ethical concerns and issues to the foreground.
There are enzymes in the small intestine explain why these are needed
Answer: Enzymes are essential for healthy digestion and a healthy body. They work with other chemicals in the body, such as stomach acid and bile, to help break down food into molecules for a wide range of bodily functions.
Explanation: i hope i helped. and you are loved and be happy! <3
The process used to build a lipid?
I believe it is called lipogenesis.
Select at most 8 species seen in each photo and count how many individuals of each species are seen in each photo. You may not know what the different species are, so make up names or identify otherwise.
Answer:
eukaryotes
bacteria
Arthropod
insects
animals
plants
trees
flowering plants
Explanation:
wait any species