Four of the five characteristics listed below are
advantages to having an extensive membrane system.
Select the exception.
a. a platform for metabolic activities
b. a simplified cellular organization
c. an increased surface area for reactions
d. a variety of organelles
e. an increased surface to volume ratio
Answer: b
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Different tissues are able to respond to the same hormone differently due to ____
a. variations in receptor structure b. competing effects c. additive effects d. subtractive effects e. chemical modifications to the hormones
The increase in interstitial hydrostatic pressure associated with an edema will lead to a(n)
A) decrease in the recruitment of leukocytes to the site of infection. B) sensation of pain. C) release of bradykinin. D) increase in blood flow. E) increased movement of water out of the capillaries.
A bacterial gene (gene A) ordinarily makes a protein that binds to DNA. A mutation of gene A decreases the expression of another gene, gene B. We can conclude that:
A: gene A is a positive regulator of gene B. B: gene A is a negative regulator of gene B. C: gene B is a positive regulator of gene A. D: gene B is a negative regulator of gene A. E: genes A and B regulate one another.
Mutagens that can cross the placenta of a pregnant woman and cause a spontaneous abortion or birth defects in the fetus.