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laiz [17]
3 years ago
8

Is this statement true or false?

Biology
2 answers:
Helga [31]3 years ago
6 0
All organisms do have a closed circulatory system 
so A <span />
Verizon [17]3 years ago
5 0

Its A (do we both use k 12)


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1. C) The soil will have no nutrients to grow the corn.
2. C) Crops may cause an increase of allergic reactions in humans
3. B) Decomposers
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What should I write about in an essay about The Arctic Biome and Desert Biome?
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Something about the Artic Biome And desert biome
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Infections arising from the periapical region of the mandibular first premolars perforate through the lingual cortex to theA- Pt
Reika [66]

Answer:

The correct answer is option C- "Sublingual space".

Explanation:

If an infection perforate from he mandibular first premolars through the lingual cortex, it is very likely that it continues is way into the sublingual space. The infections located at the sublingual space are often bacterial infections that comes precisely from the floor of the mouth. If an infection goes into the lingual cortex, it will often go to the tissue under the tongue at the sublingual space.

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4 years ago
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Thymine in DNA occurs as the result of thymidylate synthase creating _______, which then undergoes _______ to _______, then to _
tensa zangetsu [6.8K]

Answer:

Thymine in DNA occurs as the result of thymidylate synthase creating deoxythymidine monophosphate (dTMP), which then undergoes phosphorylation to deoxythymidine diphosphate (dTDP), then to Deoxythymidine triphosphate (dTTP), and incorporated into DNA by the DNA polymerase (DNA pol). Thymine in tRNA arises post-transcriptionally, by S-adenosylmethionine-dependent methylation of a uridine 5'-monophosphate (UMP) residue in RNA.

Explanation:

Thymidylate synthase is an enzyme involved in <em>de novo</em> DNA synthesis. This enzyme (thymidylate synthase) catalyzes the transfer of the one-carbon group from 5,10-methylene-tetrahydrofolate (5,10-CH2-THF) to deoxyuridine monophosphate (dUMP) and subsequent methylation to produce deoxythymidine monophosphate (dTMP), which is then phosphorylated to deoxythymidine triphosphate (dTTP) by kinases and incorporated into DNA. On the other hand, specific tRNA methylases catalyze the methylation of transference RNA (tRNA) by using S-adenosylmethionine as a methyl donor. Since tRNA methylation is a post-transcriptional modification, this chemical reaction is considered an epitranscriptomic modification on the RNA molecule.

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3 years ago
In cells, genes are segments of DNA that code for proteins; not sugars or complex carbohydrates, or lipids, but proteins. The co
Evgesh-ka [11]

Answer:

Explanation:

Proteins are involved in almost every function of cell and inside the body and each protein is specific for its role. Some of them are  

1) Protein constitute major part of structure of cell. Proteins are major constituent of cell membrane along with lipids.  

2)  Enzymes which are proteins in nature catalyze all the important chemical reactions inside and outside the cell e.g transporting material across the cell, synthesizing and repair of DNA

3) Hormones which are proteins play important role in the regulation of metabolic reactions inside the cell

4)  Regulation of cell division is performed by DNA-associated proteins  

5)  Proteins plays important role in storage of iron inside the cells

6) Proteins can be stored as fats inside the body and used as energy when needed by cells for its metabolic activities.  

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