Organisms that grow in the mud under relatively nonturbulent bodies of water are likely to be
A. obligate aerobes.
B. thermophilic.
C. anaerobes.
D. barophilic.
Answer: C
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____________________ Indicate whether the statement is true or false.
The placenta ____.
A. forms from endometrial and extraembryonic tissues B. will cover about one-half of the inner uterine surface at full term C. intermingles fetal blood with maternal blood D. secretes only estrogen to maintain the uterine lining during the second and third trimesters E. secretes only progesterone to maintain the uterine lining during the second and third trimesters
Magnetoreceptors ____
a. are well characterized and understood b. are known to rely on the mineral magnetite c. help many types of animals navigate long distances d. have been studied only in homing pigeons e. have been studied primarily in moths
Small sac under the liver: stores bile________________
Fill in the blank(s) with the appropriate word(s).