The organelle that consists of a stack of flat, membrane-enclosed sacs is the
A) mitochondrion.
B) nucleolus.
C) Golgi apparatus.
D) nucleus.
C) Golgi apparatus.
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The seed is produced by the maturation of the
a. embryo. b. ovule. c. ovary. d. zygote. e. pollen.
Which of the following is the lineage of green algae believed to most resemble early plant ancestors?
A) charophytes B) ulva C) volvox D) dinoflagellates
Which of the following structures would be impacted by a bacterial infection of the inner ear?
A. semicircular canal, tympanic membrane, ear lobe, and vestibular nerve B. semicircular canal, cochlear nerve, vestibular nerve, and cochlea. C. auditory canal, cochlear nerve, malleus, and vestibular nerve D. pinna, stapes, vestibule, and cochlear nerve
Which of the following is a challenge to the hypothesis that bats, which produce an unusually large number of sperm, increase the probability of conception when females engage in multiple matings?
I) Female bats can eject the sperm of certain males after mating. II) A female can actively choose which male mates with her last, thus increasing the odds of conception with that male's sperm. A) Only I is correct. B) Only II is correct. C) Both I and II are correct.