What structure lies within the dermis?
A. nerve fibers
B. keratin
C. muscle fibers
D. melanin
Answer: A. nerve fibers
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Cotyledons develop into
a. leaves. b. roots. c. stems. d. all of these
The vast majority of proteins expressed early in an animal's development
a. are translated from preexisting mRNAs present in the unfertilized egg. b. are translated from preexisting mRNAs delivered by the sperm that fertilized an egg. c. are translated from mRNAs that were transcribed from the zygote's DNA in the first three rounds of cell division. d. are transcribed and translated from the unfertilized egg's DNA postfertilization. e. were present as inactive proteins in the unfertilized egg.
Which is not a characteristic of the gymnosperms?
A) Cones B) Seeds C) Pollen D) Flowers
What is the most serious consequence of untreated dehydration?
a. syncope b. death c. heat exhaustion d. heat stroke