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The earlier the cell intervenes in the process

Question # 00417638
Subject: Biology
Due on: 11/03/2016
Posted On: 11/03/2016 02:29 AM

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The earlier the cell intervenes in the process of protein synthesis, the _______ energy it wastes. Thus, cells will tend to regulate protein synthesis _______.

a. more; at the earliest possible stage

b. more; at all stages

c. more; at the latest possible stage

d. less; at the earliest possible stage

e. less; at the latest possible stage


Helix-turn-helix is a _______ found in a _______.

a. structural motif; promoter

b. structural motif; transcription factor

c. consensus sequence; promoter

d. consensus sequence; enhancer

e. consensus sequence; transcription factor


Actin, which is part of many cellular structures and has several functions, is produced at constant levels in nearly all cells. It is best described as a(n) _______ protein.

a. inducible

b. repressible

c. conditional

d. constitutive

e. regulated


Two identical twins show very similar methylation patterns when they are 4 years old, but these patterns diverged considerably by the time they are 40 years old. What is the most likely explanation for this?

a. It is an effect of different genomic imprinting in the twins.

b. It is due to different alternative splicing in the twins.

c. It is due to the twins experiencing different environments as adults.

d. It is due to different levels of histone acetyltransferase in the twins.

e. It is due to differences the twins experienced in utero.

Tags proce intervenes cell earlier twins poible stage different consensus sequence protein years patterns motif structural transcription latest factor levels promoter synthesis earliest cells considerably time utero likely diverged differences methylation experienced explanation similar acetyltransferase

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