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ValentinkaMS [17]
3 years ago
6

Definition: this is one explanation of enzyme specificity that states an enzyme and its substrate possess specific complementary

geometric shapes that fit exactly into one another.
Biology
1 answer:
wolverine [178]3 years ago
3 0
It is called lock and key model. it theorize that enzymes and its substrate behave like a lock and key which fits into each other and does not fit into any other system(lock or key)
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2. Copy/paste and align the first 5 bases of all introns. Which bases are conserved near intron start ("donor site")?
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Answer:

This question is incomplete

Explanation:

Introns are non-coding regions of a DNA that removed by RNA splicing prior to translation. Alignment is usually done between sequences to see and understand the identity and similarity between two or more sequences.

A region/base is said to be conserved if there is  NO change in any base in that particular region. A multiple sequence alignment (MSA) can be used to align the donor sites of all the introns to see the bases that have not "changed" (and still remained in there exact position) hence conserved across all the donor sites.

NOTE: The donor site of an intron is the 5' end, thus the first five bases in the 5' end are to be used here

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4 years ago
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Answer:

Explanation

the two basic difference between RNA and DNA are

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RNA contain uracil and DNA contain thymine

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Explanation:

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