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nadya68 [22]
3 years ago
9

All the biological macromolecules contain Carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that

contains nitrogen are
Biology
2 answers:
lidiya [134]3 years ago
8 0

The correct answer is proteins

I hope this helped

Olenka [21]3 years ago
3 0
The biomolecules that contain nitrogen are protein and nucleic acids.
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A cell under a microscope shows Two daughter cells were formed and they are haploid. Which stage of meiosis is the cell showing?
Nadya [2.5K]

The answer is <span>Meiosis I.</span>



<span>Meiosis is a cell division which results in the reduction of chromosome number by half - from diploid to haploid - in daughter cells. It consists of meiosis I and meiosis II. Meiosis I produces two haploid cells. Meiosis II is analogous to mitosis, so each of these two haploid cells will in meiosis II produce two haploid cells. In total, meiosis results in four haploid cells.</span>

<span>
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<span>Therefore, the production of two haploid daughter cells is in meiosis I.</span>

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Which of the following statements about the organization of the purine synthetic enzymes are true? The process involves multifun
Svet_ta [14]

Answer: All of the statements are true.

Explanation:

Purines are biologically synthesized as nucleotides and in particular as ribotides, that is, bases attached to ribose 5-phosphate. Adenine and guanine are both derived from the nucleotide inosine monophosphate (IMP), which is the first compound in the pathway to have a completely formed purine ring system.

Purine nucleotides can be synthesized in two distinct pathways. First, purines are synthesized de novo, starting with simple starting materials such as amino acids and bicarbonate. the purine bases are assembled already attached to the ribose ring. Alternatively, purine bases, released by the hydrolytic degradation of nucleic acids and nucleotides, can be salvaged and recycled. Purine salvage pathways are mostly noted for the energy that they save and the remarkable effects of their absence.

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