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slava [35]
3 years ago
5

About 80% of the air in our atmosphere is made of nitrogen. All living things need nitrogen; it is a key element in DNA, RNA, an

d proteins. Your body gets the nitrogen it needs from food. But how does the nitrogen get from the air into the food that we eat? In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form. Review the picture of the nitrogen cycle.
In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form. Review the picture of the nitrogen cycle. One type of organism is responsible for "fixing" nitrogen so other organisms can use the element. What organism is this?

A) fungi

B) plants

C) animals

D) bacteria

Biology
2 answers:
Ilya [14]3 years ago
7 0
The answer is D bacteria ,this because in our body it does tireless job in breaking food and disseminating it to the areas that needed it in our body
11111nata11111 [884]3 years ago
6 0
D) Bacteria, Is the answer
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Frank is putting money into a savings account. He starts with $750 in the savings account, and each week he adds $40.
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Answer:

750+(40xW)=S

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Explanation:

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Answer:

The correct answer is -

A: Prophase  (top left)

B: Cytokinesis  (top middle)

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E: Metaphase  (bottom middle)

F: Anaphase (bottom right)

Explanation:

A. prophse - the first stage of mitosis, in this pahse the chromatin which is DNA and proteins, condenses in nucleus.

B. Cytokinesis  - It is the physical sepration or dividion of cytoplasm of the parental cell.

C. Interphase - This phase have no change in cell except its size as it grows and enlarges itself.

D. Telophase - formation of a nuclear membrane around chromosome set to separate the genetic material from the cytoplasm.

E. Metaphase - visible chromosomes, removal of nucleus and chromosomes present in cytoplasm.

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Answer:

miR-223 inhibits the expression of the fibroblast growth factor (bFGF) gene, and thereby ESCs cells maintain their undifferentiated state .

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Non-coding RNA (ncRNAs) are molecules that regulate gene expression, thereby playing important biological functions in cell differentiation, cell cycle, apoptosis, etc. MicroRNAs (miRNAs) are a type of ncRNAs capable of controlling gene expression patterns by regulating mRNA stability and by suppressing their translation into proteins. It has been shown that miRNAs function by imperfectly base-pairing with the 3′ UTR of target mRNAs (Pillai et al. 2005).

Citation:

R. S. Pillai, S. N. Bhattacharyya, C. G. Artus,   T.  Zoller, et al. (2005). Inhibition of translational initiation by Let-7 MicroRNA in human cells. Science, 309(5740), 1573-1576.

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