Which of the following best describes why ice was used during this experiment?
a. To increase the activity of the enzyme
b. To retard the breakdown of the catalase
c. To purge the solution of excess air trapped during blending
d. To slow the catalase molecules to increase the probability of contact with the hydrogen peroxide molecules
e. To increase the size of the active site on the enzyme
Ans: b. To retard the breakdown of the catalase
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Which of the following problems can arise during posttranscriptional control?
A. Excising an exon from the pre-mRNA strand. B. Incomplete excising of all introns from the pre-mRNA strand, leaving fragments to be joined with the exons. C. Differential splicing of exons that can lead to an altered gene expression. D. All of these are errors that can occur during posttranscriptional control of gene expression.
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What will be an ideal response?
Which of the following species of hominin is the most recent to have become extinct?
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