All of the following are lipids except:
A. cholesterol
B. glycogen
C. phospholipids
D. female sex hormones
E. waxes
Answer: B
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Which of the following cells can serve as antigen-presenting cells?
a. macrophages, basophils, and B cells b. dendritic cells, B cells, and T cells c. macrophages, dendritic cells, and B cells d. B cells, T cells, and basophils e. macrophages, T cells, and basophils
Which molecules influence the rate of transcription?
a. RNA polymerase b. regulatory proteins c. exons d. DNA e. promoters
What is the advantage of producing a seed over a spore?
A. Seeds are diploid, and can grow directly into a sporophyte. B. Seeds are haploid, and can grow directly into a sporophyte. C. Seeds are diploid, and can grow directly into a gametophyte. D. Seeds are haploid, and can grow directly into a gametophyte. E. Producing seeds over spores is a disadvantage.
Interleukin-1 stimulates ________________, which activate the remainder of the T and B cell immune system responses.
A. B cells B. T cells C. helper T cells D. natural killer cells