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Vlad1618 [11]
4 years ago
8

Wild-type strains of E. coli have a tRNA with a 5′-GUA-3′ anticodon that recognizes the UAC codon for tyrosine. We can represent

this tRNA as GUA-tRNATyr. Suppose you isolated a strain of E. coli in which a mutation changed the anticodon in this tRNA to 5′-CUA-3′ (creating CUA-tRNATyr). Answer the following questions about translation elongation in each strain. For each answer, type in "yes" or "no".
A. Will the wildtype tRNA recognize a normal UAC codon in the A site?
B. Will the mutant tRNA recognize a normal UAC codon in the A site?
C. Will the wildtype tRNA recognize a stop codon in the A site?
D. Will the mutant tRNA recognize a stop codon in the A site?
E. Will peptide bond formation occur with the wildtype tRNA bound in the A site?
F. Will peptide bond formation occur with the mutant tRNA bound in the A site?
G. Will the normal, wildtype protein be produced in the wildtype strain?
H. Will the normal, wildtype protein be produced in the mutant strain?
Biology
1 answer:
emmainna [20.7K]4 years ago
5 0

Answer:

The anticodon of the mutant tRNA that is CUA will recognize UAG which is a termination codon or nonsense codon or stop codon.

Explanation:

A   yes

B   no

C  no

D  yes

E   yes

F  no

G   yes

H    no

In the mutant strain the tRNA recognizes a stop codon UAG  for this reason protein synthesis will terminate at the stop codon.

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Answer:

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Explanation:

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A population of deer includes deer with white spots and deer with brown spots. A forest fire kills half the deer with white spot
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This should be an example of genetic drift.

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A children's liquid medicine contains 100 mg of the active ingredient in 5 mL . If a child should receive 150 mg of the active i
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Answer:

The correct answer is 7.5 ml

Explanation:

The medicine contains 100 mg in 5 ml, that means that the concentration of the active ingredient is 100 mg/5 ml= 20 mg/ml

If we divide a concentration (in mg/ml) into a mass (in mg) we obtaine a volume (in mL). Thus, in order to calculate the mililiters of medicine which contain 150 mg of the active, we have to only divide mass (150 mg) into the concentration of active ingredient as follows:

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4 0
3 years ago
A scientist has discovered a new plant species in the Amazon rainforest she tells her fellow scientist at the Playhouse she has
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Answer:

It is a seeded vascular plant.

It does not depend on insect pollination.

Explanation:

The complete question is: <em>A scientist has discovered a new plant species in the Amazon rainforest. She tells her fellow scientists that the plant she has found produces a cone. What might they say about how this plant is different from an angiosperm? Its seeds have one or two cotyledons. Its stems' vascular bundles are scattered. It does not depend on insect pollination. It is a seeded vascular plant. </em>

<em />

<em>The correct option would be that the plant is a seeded vascular plant and does not depend on insect pollination.</em>

Gymnosperms are the only group of plants that produce cones. They are one of the plant groups that have vascular tissues in the form of xylem and phloem as well as been able to produce seed in the form fo cones. Hence, they are said to be seeded vascular plants.

Gymnosperms also carry out their pollination by relying solely on wind for the transfer of their pollen grain to the female organ. In other words, they do not depend on insect for pollination.

8 0
3 years ago
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