Megaspores develop in the ____
a. gametophyte
b. ovary
c. ovule
d. pollen grain
e. zygote
c
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A land snail, a clam, and an octopus all have _____
A) a mantle B) a radula C) gills D) embryonic torsion E) distinct cephalization
In brown fat, ________ present in the inner mitochondrial membrane uncouples ATP synthesis from electron transport in infants and other newborn mammals.
A) thermogenin B) fluorocitrate C) coenzyme A D) submitochondrial particles E) respirasomes
In a molecule of DNA, purine bases form ________ bonds with pyrimidine bases.
A) phosphate B) hydrogen C) disulfide D) covalent
Why can evolution in mosquitoes be more easily observed than evolution in a population of squirrels?
A) Mosquitoes have a shorter generation time. B) Mosquitoes have a higher mutation rate. C) Mosquitoes feed only on blood. D) Mosquitoes lay eggs rather than bear live young.