Refer to Figure 5-1. Which of the following statements about the red blood cells in Figure B is true?
a. These red blood cells have been placed in an isotonic solution.
b. These red blood cells have swollen in response to a hypertonic external solution.
c. These red blood cells have swollen in response to a hypotonic external solution.
d. These red blood cells have shrunken in response to a hypertonic external solution.
e. These red blood cells have shrunken in response to a hypotonic external solution
D
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Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
What will be an ideal response?
Tobacco smoke:
a. exposes the smoker to less than 10 carcinogens b. presents more of a risk to male smokers than to female smokers c. takes a long time to manifest in a decrease of respiratory function d. increases respiratory infections e. increases carbon dioxide blood levels but decreases carbon monoxide blood levels
The oxygen that arose in early Earth's atmosphere was likely produced by organisms that were very similar to modern
A) plants. B) algae. C) fungi. D) cyanobacteria. E) protists.
The tertiary structure of a polypeptide refers to
A) its size. B) the presence of pleated sheets. C) the amino acids of which it is made. D) the overall three-dimensional structure.