Based on part 2 of Figure 41-2, the ions involved in __________ are __________
a. depolarization; Clb.
repolarization; K+
c. depolarization; Na+
d. repolarization; Cl?
e. hyperpolarization; Na+
C
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You have discovered a new species of prokaryote in a deep sea thermal vent. Without any further characterization, which one of the following statements could you make about this species with a high degree of certainty?
A. These organisms store their genetic information in a compartment called a nucleus. B. Information in DNA is translated into RNA and then transcribed into protein. C. The organisms are from the domain Archaea. D. Information in RNA is transcribed into DNA and then translated into protein. E. None of the above statements can be made with certainty.
A particular gene has a mutation in its NFR that causes it to bind abnormally tightly to histones. What effect would you expect this mutation has on the expression of this gene?
A. The expression of the gene would be abnormally high. B. The effect on gene expression is impossible to predict. C. The gene would encode a different protein instead. D. The expression of the gene would be abnormally low or absent E. The promoter of the gene will be constantly available to transcription factors and RNA polymerase.
Blood pressure depends on:
a. the height and weight of an individual. b. atrial volume and stroke rate. c. blood flow and resistance of blood against the vessel walls. d. total blood volume. e. diastole and systole
Which of these animals has a double circulatory system?
A) fish B) grasshopper C) dog D) hydra