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Leviafan [203]
3 years ago
14

What molecules both enters AND exits the Kreb's cycle?

Biology
1 answer:
kykrilka [37]3 years ago
4 0
<span>Pyruvic acid enters and<span> carbon dioxide exits but the only one that is there is pyruvic acid so its pyruvic acid.</span>

</span>
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Why is biomass at the second trophic level in most ecosystems not as great as biomass at the first trophic
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2 years ago
What three structures, in order, are involved of the production of mature sperm?
34kurt

Answer:

The three anatomical structures that, in order, contribute to the production of mature sperm are the epididymis, seminal vesicle and prostate.

Explanation:

The sperm and the first seminal fluid are produced and found initially in the seminiferous tubules of each testicle. From there they move on to several structures that contribute to the maturation process:

  1. Each <u>seminiferous tubule </u>drives the sperm to the epididymis, through the vas deferens, where the sperm can be for a long time and complete their maturation process.
  2. From the epididymis, the sperm pass to the seminal vesicle, which produces more seminal fluid to give nutrients to the sperm and facilitate its movement.
  3. Finally, and before being expelled outside, the seminal fluid receives the prostatic secretion in the prostatic urethra, a viscous and whitish liquid that completes the seminal fluid content.

The process of maturation of sperm is of  importance for the process of sexual reproduction.

Learn more:

brainly.com/question/1173367

6 0
3 years ago
What is the definition for Allele?
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Explanation:

One of a number of alternative forms of the same gene occupying a given position, or locus, on a chromosome is allele.

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