Which is the temporary blood vessel that shunts most blood past the fetal liver?
A) foramen ovale
B) ductus venosus
C) ductus arteriosus
D) aorta
B
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Archaea have very diverse environmental requirements and tolerances. From what you have learned about them, which among the following conditions or substances do ALL archaeans require for survival and reproduction?
A. oxygen B. carbon C. moderate pH D. moderate temperature E. moderate salinity
P700 is located in photosystem ____ and is comprised of chlorophyll ____
a. I; b b. I; a c. II; b d. II; a e. I and II; a
Joints are areas of connection between two
a. bendable regions of the skeleton. b. bones. c. glands. d. cartilage regions. e. of none of these.
Why might a seed be covered in prickly hooks?
A) To aid in seed dispersal B) To allow it to float on water C) To keep it from being eaten D) To help the seed germinate E) To attract insects