The cells that actually secrete antibodies are
A. plasma cells.
B. natural killer cells.
C. phagocytes.
D. T cells.
A
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The equation (N/t)/N1 (where N denotes the size of a population and t represents time) is used to calculate:
A. a habitat's carrying capacity. B. the "available" percentage of a habitat's carrying capacity. C. a population's density. D. a population's intrinsic growth rate. E. Euler's number.
In a population in Hardy-Weinberg equilibrium, 75 percent of the individuals have a dominant allele for a particular gene (p=0.75) and 25 percent have a recessive allele (q=0.25). The proportion of homozygous recessive individuals in the F1 generation will be
A) 2.5%. B) 6.25%. C) 18.75%. D) 0%.
In insects, air enters through a ____ and is delivered to interstitial fluid
a. spicule b. spiracle c. stoma d. foramen e. gill
When a cell divides, chloroplasts are randomly distributed. What is this called?
What will be an ideal response?