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Alex17521 [72]
3 years ago
7

Certine species of what are now recognized as indacators of enviormental pollution

Biology
1 answer:
Rina8888 [55]3 years ago
8 0
None of the above because they are non pollutant
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A student is studying the amino acid sequence of a protein shared by four organisms. The student wants to know which organism is
MariettaO [177]

Answer:

Organism D.

Explanation:

Amino acids are the monomers of proteins and are linked together by the peptide bond. The protein is obtained from the RNA molecules by the process known as translation.

The amino acid sequence of the proteins can also be used to study the evolutionary relationship between the organisms and the closeness of teh organisms with each other. In the question it is give that organisms A and D has least difference ( 1 amino acid sequence difference) and more related with each other.

Thus, the answer is organism D.

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3 years ago
Why did soldiers rub mold on their wounds?
ioda
I would think to protect the wound and clot any blood
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3 years ago
Union of haploid and diploid gamete results in a zygote that is
nikdorinn [45]

Answer:

Triploid

Explanation:

The process whereby gametes produced by different sexes of the same species of organism come together is called FERTILIZATION. A gamete is said to be HAPLOID (n) if it contains one set of chromosomes while it is DIPLOID (2n) if it contains two sets of chromosomes.

Hence, if an haploid (n) and diploid (2n) gamete unites, a zygote that is TRIPLOID (3n) emerges or forms. A triploid zygote will have three sets of chromosomes i.e. n + 2n = 3n.

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2 years ago
I need help question 14
KATRIN_1 [288]

Answer:ok

Explanation:

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Which receptor on the helper T-cell recognizes the specific antigen from an antigen-presenting cell? Which receptor on the helpe
IgorLugansk [536]

Answer:

TCR

Explanation:

Helper T cells are the CD4T cells that are present in the inactive form. These cells have receptors for antigens on their surface. These antigen receptors are called T-cell receptors (TCRs). The function of TCR is to recognize and bind to specific foreign antigen fragments that are presented in antigen–MHC complexes. Different helper T cells have their unique TCRs to recognize a specific antigen–MHC complex. The CD4 proteins of helper T cells also interact with the MHC antigens and help maintain the TCR–MHC coupling.

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2 years ago
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