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NARA [144]
3 years ago
15

In early embryonic development, the cells start to differentiate based on _________________.

Biology
1 answer:
Alika [10]3 years ago
4 0
Their location, or layer
The cells produce three germ layers:
endoderm- becomes the gut
mesoderm- becomes muscle, skeletal system, some organs, and connective tissure
ectoderm- becomes skin and nervous system
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Think of a deer in the woods that has just relieved itself by urinating. Number the steps to follow the nitrogen molecules in th
IRINA_888 [86]
The molecules of nitrogen in the urine are broken down into ammonium. - Step 5 ("Nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification<span>.")
Then, ammonium is converted into nitrates by nitrifying bacteria. - Step 1 ("</span><span>Ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. This is called nitrification.")
There are then two ways that the cycle can take... in the one related to the deer, follows the assimilation where the plants add the nitrogen to protein. - Step 6 ("</span><span>Plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.")
The deer then eats the plants and the nitrogen is again inside it and ready to be used and again released in urine. - Step 2 ("</span><span>The deer eats the plants and uses the nitrogen-containing proteins for cell growth.")

The other way that the nitrogen may take is denitrification by denitrifying bacteria. - Step 4 ("</span><span>Some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere.")
This gas is then captured by nitrogen fixing bacteria, called nitrogen fixation. - Step 3 ("</span><span>Bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium.")
The ammonium is now ready again for t</span>he process of ammonification.
6 0
3 years ago
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All species of what????? Have pharyngeal pouches at some stages during their development
zhannawk [14.2K]
Kangroo's Because they have a pouch


8 0
3 years ago
Which is not a greenhouse gas and therefore not responsible for global warming?
ELEN [110]

Answer:

C: Nitrogen

Explanation:

nitrogen is transparent to infrared light. the molecules are invisible because when you stretch one, it doesn't change the electric field.

8 0
3 years ago
UV radiation can directly cause the DNA within cells to mutate, which may eventually lead to the formation of
luda_lava [24]

Answer:

UV radiation may cause negative regulators (tumor suppressors) to be under-expressed. UV radiation may cause positive regulators (oncogenic) to be over-expressed.

Explanation:

I found this on a quizlet. So credits to them- :)

6 0
3 years ago
All autotrophs produce valuable organic molecules. What makes these organic molecules so valuable to living organisms
Sindrei [870]

Answer:

The valuable organic molecules produced by autotrophs serve as sources of food for the heterotroph and supply the necessary nutrients living organisms need to grow and survive.

Without these valuable organic molecules living organisms can not survive , grow and develop.

The organic molecules serve as sources of energy needed to fuel biological processes in the organisms.

Explanation:

Autotrophs are group of organisms that can produce their own food through the process of photosynthesis where inorganic molecules are converted to organic molecules i.e they use light energy from the sun with water and carbondioxide to produce carbohydrates and oxygen.

Heterotrophs or other living organisms depend on autotrophs for the supply of organic matter as food nutrients and sources of energy needed for cellular or biologic processes.

7 0
4 years ago
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