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ankoles [38]
3 years ago
14

A spindle fiber is a specialized form of

Biology
1 answer:
Norma-Jean [14]3 years ago
8 0
<span>A spindle fiber is a specialized form of microtubule </span><span><span>
</span></span>
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A forest fire lightly burned part of the park. The fire added nutrients to the soil. The fire also helped pine cones open and dr
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It is defiantly not a, because only part of the park was burnt. It wouldn't be c, because fire does not cause seeds to fly in. I would say B
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The hormone , which is secreted by the pineal gland, influences the sleep–wakefulness cycles.
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The hormone described above is the hormone Melatonin.
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1. Describe the structure and function of each of the three types of RNA.
Ket [755]

Answer:

1.

mRNA - Messenger RNA: Encodes amino acid sequence of a polypeptide.

tRNA - Transfer RNA: Brings amino acids to ribosomes during translation.

rRNA - Ribosomal RNA: With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.

2.

Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. Transcription takes place in two broad steps. First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes.

3.

During translation, which is the second major step in gene expression, the mRNA is "read" according to the genetic code, which relates the DNA sequence to the amino acid sequence in proteins. Each group of three bases in mRNA constitutes a codon, and each codon specifies a particular amino acid (hence, it is a triplet code). The mRNA sequence is thus used as a template to assemble—in order—the chain of amino acids that form a protein.

Explanation:

6 0
3 years ago
Help please ?!??????
babunello [35]
Bro I think it's A

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Pandemics occur over a wide geographic region, potentially affecting a large population.
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