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andrezito [222]
3 years ago
13

What is an intron?

Biology
2 answers:
navik [9.2K]3 years ago
8 0
An Intron is a part of DNA that does not code for a functional protein
nydimaria [60]3 years ago
6 0

it is an exon. I just took the quiz

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MEDALSS!!
lawyer [7]
During the S phase in the cell cycle, the chromosomes are replicated so that there are two copies. These copies are necessary so that each daughter cell created during the M phase will have an identical copy of the DNA.

Therefore, the answer is A: The DNA must be replicated. 


The chromosomes joining, cell membrane expanding, and cytoplasm separating all happen during the M phase (mitosis).
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3 years ago
What is the cytoskeleton of a cell? What does it do?
ohaa [14]
Its made up of microtubules, microfilaments and intermediate filaments. They give the cell shape and organize its parts
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3 years ago
In translation, the cell uses the genetic information contained in mRNA to make the proteins that carry out the cell's work.
Jobisdone [24]

Answer: d). UAG

Explanation: During translation, DNA sequence is first of all copied into an mRNA in a process known as transcription. This is the first step in protein synthesis. The mRNA is used as a template in protein synthesis. The genetic information encoded in an mRNA are in form of codons. A Codon is a three nucleotide sequence that codes for a specific amino acid. These codons are recognized by anticodons in a tRNA molecule. An anticodon is a three-base sequence on the tRNA through which tRNA base pair with mRNA.

From the DNA sequence above, 3'TAG will first be transcribed into an mRNA sequence AUC, then the anticodon on the tRNA will be UAG. The mRNA codon-tRNA anticodon base pairing follows the Watson and Crick base pairing in which Adenine pairs with Uracil and Cytosine pairs with Guanine.

5 0
3 years ago
PLS ANSWER MY QUESTION TODAY 50 POINTS!☺♥..According to the tide tables, is Boston experiencing a neap tide or a spring tide on
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Neap tide: A tide in which the difference between high and low tide is the least. Neap tides occur twice a month when the Sun and Moon are at right angles to the Earth. ... Spring tides occur when the Moon is either new or full, and the Sun, the Moon, and the Earth are aligned.

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This graph shows that bird ranges in the winter have been shifting northward over several decades.
erik [133]

Answer:

1 migration

2 the northern regions have become warm

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