Root hairs on a root develop _____
A) on the entire root surface
B) before the cells elongate
C) after the cells elongate
D) on the root cap
Answer: C
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The side toes of a horse, the pelvis of the whale, and the human appendix are all examples of structures that resemble structures of presumed ancestors, which are known as
A. analogous structures. B. homologous structures. C. vestigial structures. D. homeotic mutations. E. acquired structures.
Because of its location in the electron transfer
chain, delivery of electrons to each FAD results in __________ ATPs. a. 4 b. 2 c. 3 d. 32 e. 0
Using severed aphid mouthparts, scientists have verified that in most species the phloem translocates
mostly __________, but that __________ may also be translocated. a. glucose; amino acids b. glucose; sugar alcohols c. glucose; cellulose and starch d. sucrose; raffinose and sorbitol e. sucrose; glucose
Which of the following is not an agglutination test?
A. Counterimmunoelectrophoresis B. Blood typing C. Widal test D. Weil-Felix reaction E. Rapid plasma reagin (RPR) test