Which of the following sugar molecules is
involved in the structure of DNA?
a. ribose
b. ribulose
c. deoxyribulose
d. deoxyribose
e. glucose
D
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Protonephridia are found in ____
a. annelids b. mammals c. flatworms d. insects e. reptiles
The term that refers to the ability of the body to combat pathogens is _________.
Fill in the blank(s) with the appropriate word(s).
Human sperm must develop at a temperature that is _____ body temperature.
Fill in the blank(s) with the appropriate word(s)
A population of rabbits introduced to an island grows rapidly for a few years, and then growth slows and stabilizes. The population becomes stable because:
A) environmental resistance declined. B) the intrinsic rate of increase has declined. C) immigration was reduced. D) the carrying capacity has been reached.