In animals, the egg and sperm cells are:
A. polyploid.
B. diploid.
C. haploid.
D. None of these choices are correct.
C
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Which neuronal structure has the greatest density of voltage-gated Na+ channels, resulting in the lowest threshold
potential along a neuron?
a. dendrites b. cell body c. axon hillock d. axon e. axon terminals
In the F2 generation of the above cross, which of the following phenotypic ratios would be expected?
A) 9:3:3:1 B) 9:4:3 C) 1:1:1:1 D) 1:1:1:1:1:1 E) 6:3:3:2:1:1
Four the following statements are true about the mitochondrion. Which statement is false?
A. It has its own DNA. B. It has internal membranes. C. It evolved from chloroplasts. D. It resembles bacteria in structure. E. It resembles bacteria in size.
What element is essential for microbes and can restrict the growth of pathogens when bound by antimicrobial proteins?
A. Iron B. Hemoglobin C. Pyrogen D. Calcium