Which of the following is most involved in the defense against cancer?
A. Natural killer cells
B. Plasma cells
C. Dendritic cells
D. Reticular cells
E. Peyer patches
A. Natural killer cells
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Which statement accurately describes structures at a taste bud?
A. The gustatory microvillus of a gustatory cell extends through the taste pore of a taste bud. B. The gustatory villi of basal cells project through the taste bud to the surface of the epithelium. C. The gustatory microvilus of a papilla projects through the gustatory pore to the gustatory glomerulus. D. Basal cells contain villi that project through the pore of a papilla to make a taste bud.
What are the two major parts of a cell's interior?
a. the intracellular fluid and matrix b. the nucleus and plasma membrane c. the nucleus and cytoplasm d. the DNA and cytoplasm e. the DNA and RNA
Adrenal androgens
A. reduce the inflammatory response. B. stimulate growth of pubic hair in females. C. cause reabsorption of K+ by the kidney. D. decrease the sex drive. E. are produced in the adrenal medulla.
What is a codon?
A. a triplet of deoxyribonucleotides B. a triplet of ribonucleotides C. a sequence of ribonucleotides on tRNA D. a very small gene E. a very small genome