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Elenna [48]
3 years ago
9

A chemical substance that organisms require to live.

Biology
1 answer:
tia_tia [17]3 years ago
7 0
It's called a nutrient.

Nutrients are well, something that all humans need to survive. A certain amount of nutrients keep humans alive and healthy, yet a lack of nutrients will cause them to become sick and slowly die.

Thus, making it so nutrients is a chemical substance that organisms require to live.

Hope this helps!
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Gene expression in eukaryotes can be regulated at many different levels. List the different levels of regulation, and explain wh
Aneli [31]

Answer:

Transcription, mRNA (processing, transport, localization and stability), translation.

Explanation:

  • Transcription is regulated in two levels, though chromatin regulation (methylation and acetylation) to loose or increase histone's affinity to DNA and through cis and trans elements such as promoters, enhancers, and silencers (cis) to active/deactivate and RNA polymerase and transcription factors and co-factors (trans).
  • mRNA can be regulated using poly-A tails or 5'-caps to shorten or give them more time before they degrade, it could also be spliced to eliminate introns.
  • In the translation stage, the regulation occurs during the initiation through a scanning procedure that ensures the 40s ribosomal subunit bind correctly to the untranslated portion of RNA

Hope this information is useful to you!

4 0
4 years ago
Which ones did I sort wrong? Please help!
masya89 [10]

Answer:

You messed up on cytokinesis

Explanation:

The box that says "In this stage, the replicated genetic material is seperated" should be in mitosis because cytokinesis is only when the cell divides through a cleavage furrow or cell plate.

7 0
3 years ago
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expeople1 [14]

Answer:

True

Explanation:

8 0
3 years ago
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Which of the following is not true of mutations?
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<span> B. A mutation can result in a change of function.  </span>Not all mutations can cause negative effects, but a single mutation is capable of causing profound effect on the physiology and cellular structure of organisms. It can alter the function of proteins causing permanent diseases.
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What biodiversity restoration method can biologists follow to increase the density of trees and the canopy thickness in an area
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