The seminal vesicles, prostate and bulbourethral glands,
A. produce semen.
B. cause ejaculation.
C. are secondary sex characteristics.
D. produce hormones.
A. produce semen.
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Archibald Garrod's evaluations of alkaptonuria (black urine in patients) led him to conclude:
A. a mutation can result in a nonfunctional enzyme. B. enzymes are required for biochemical pathways. C. this defect is sex-linked and recessive. D. disjunction can result in a nonfunctional enzyme.
The pollen grain is indicated by
a. A. b. B. c. C. d. D. e. E.
Terminal electron acceptors used by Desulfotomaculum include sulfate and sulfite, converted to hydrogen sulfide.
Answer the following statement true (T) or false (F)
Select the option that correctly finishes the following statement: "A cell's genome _________________."
(a) is defined as all the genes being used to make protein. (b) contains all of a cell's DNA. (c) constantly changes, depending upon the cell's environment. (d) is altered during embryonic development.