3 years ago

Describe a major distinction between most plant cells and animal cells

1 answer:

5 0

Beyond size, the main structural differences between plant and animal cells lie in a few additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles.

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recombinant DNA ,the DNA derived from more than 2 or more DNA

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Describe at least 2 ways in which nature can impact an ecosystem over a long period of time.

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Can destroy habitats and food supply

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Some conifers lose their needles seasonally, just as deciduous trees do. True False

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the answer to this is true

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tac tag gct tac tcg cgg cta ttc gtc atc

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3 years ago

miRNAs can control gene expression by what action?A. degrading proteins as soon as they are formedB. inhibiting the catalytic ac

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C) binding to mRNAs and degrading them or blocking their translation

Explanation:

miRNAs:

miRNAs is the abbreviation of MicroRNAs. These are the small noncoding RNAs of ∼22 nucleotides which can not code for peptides. miRNAs are responsible for gene expression regulation at the level of post transcription. They can do so by forming complementary base pairing with target mRNA and inhibiting their translation.

They silenced mRNA by the following processes:

(1) Cleavage of the mRNA strand into pieces,

(2) stopping mRNA from translation into proteins by ribosomes.

(3) Shortening of mRNA poly(A) tail and destabilizing it.

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