The organ of sexual intercourse and birth is the ____
a. ovary
b. oviduct
c. vagina
d. cervix
e. uterus
ANSWER: c
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Microbial immobilization is the best strategy for uranium bioremediation, because
A) uranium is difficult to chemically oxidize. B) uranium contamination is widespread and thus difficult to physically remove. C) the by-products of chemical immobilization are toxic. D) immobilization may only be temporary.
Which of the following occurs during recombination?
a. Homologous chromosomes exchange linear segments of genetic material. b. One gene interferes with the expression of another gene. c. Identical alleles are expressed simultaneously in a heterozygote. d. The gene order of homologous chromosomes is significantly altered.
What is a potentially evolutionary advantage of inversion heterozygosity?
A) if a favorable complement of alleles occurs in an inversion heterozygote, they will not be disrupted by crossing over B) inversion loops stimulate favorable allele combinations C) enhanced genetic variation in the offspring D) haploinsufficiency does not occur in inversion heterozygotes E) there is none
In bacterial synthesis of polysaccharides, such as starch and glycogen, glucose is donated to the end of the growing chain by ADP-glucose. A similar reaction occurs in bacterial branching of phospholipids when phosphatidic acid is attached to a ________.
A. cytidine diphosphate carrier B. dihydroxyacetone phosphate C. fatty acyl-ATP D. acetyl-CoA