True or false

Biology

1 answer:

Tasya [4]3 years ago

4 0

<h2>Answer:</h2>

<h3>Plants absorb soil nitrogen through their root</h3>

systems in the form of amino acids, nitrate ions (NO3 -), nitrite ions (NO2 -), or ammonium ions (NH4 +). Most of the nitrogen in the cells and tissues of terrestrial animals can be traced back to the consumption of plants at some level of a food chain.

<h3>Can plants absorb nitrogen through leaves?</h3>

Plants are already known to use their leaves to absorb inorganic airborne nitrogen molecules, such as ammonia or nitrogen dioxide, and turn them into amino acids. And a relatively reactive compound called peroxyacetyl nitrate can be absorbed by leaves, although it's not clear whether plants actually use it.

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Given the gene sequence GGACCGTCGATCTTC, which of the following choices would represent an inversion mutation? A. GGACTCGATCTTC

nataly862011 [7]

Answer:

D. GGACCGTCGATCCTT

Explanation:

Mutation refers to any change in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. According to the question, an INVERSION mutation is a type of mutation in which a segment of a gene gets broken off and reattached in another way on the same DNA. Hence, the only change in inversion mutation is the arrangement of the nucleotide bases on the gene.

Considering the nucleotide sequence: GGACCGTCGATCTTC, the sequence that describes an occurrence of inversion mutation is: GGACCGTCGATCCTT because the segment TTC in the original sequence has been rearranged as CTT in the mutated sequence.

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