Which of the following would have the most difficulty entering a water lattice?
a. table salt (NaCl)
b. a nonpolar molecule
c. a sodium ion
d. a proton (H+)
e. an electron
B
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The DNA sequence recognized by restriction endonucleases is generally how long?
a. 1?2 nucleotides b. 4?8 nucleotides c. 10?15 nucleotides d. 24?32 nucleotides e. 36?47 nucleotides
Accumulation of lactic acid contributes to ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT true concerning umbilical arteries?
a. There are two of them. b. They carry oxygen-poor blood. c. They take blood from the fetus to the placenta. d. They are housed in the umbilical cord. e. They carry blood that is rich in nutrients.
The group of protists to which you are most closely related is:
A. slime molds B. Rhizaria C. the choanoflagellates D. Stramenopila E. Foraminifera