Figure 41.6
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Use the figure above showing cyclic events in a human ovary to answer the following question.
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A primary oocyte is indicated by the letter ____.
A. A
B. B
C. C
D. D
E. E
Answer: B
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The ____ is/are a plant’s main line of defense against viral infection
a. immune cells b. viral toxins within the central vacuole c. membrane proteins that latch onto virus particles d. thick cell wall that prevents viral entry e. nuclear membrane that is impermeable to viruses
What is the passive movement of water along a concentration gradient?
a. osmosis b. cotransport c. plasmolysis d. simple diffusion e. facilitated diffusion
What is the difference between cortical nephrons and juxtamedullary nephrons?
a. Juxtamedullary nephrons are more numerous than cortical ones. b. Cortical nephrons do not have loops of Henle, while juxtamedullary ones do. c. Juxtamedullary nephrons have larger glomeruli than do cortical ones. d. Juxtamedullary nephrons do not have loops of Henle, while cortical ones do. e. Juxtamedullary nephrons have more glomeruli than do cortical ones
Which symptom best indicates anaerobic cellular respiration in human muscle cells?
A. pain B. sweating C. redness D. cooling of the skin