The MIC is the _____ of a drug that is required to inhibit growth of a microbe.
A) standard dose
B) largest concentration
C) smallest concentration
D) lowest dilution
Ans: C) smallest concentration
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In order to survive, heterotrophs must
a. harvest the heat energy that is lost in energy conversions. b. recycle energy from our metabolic reactions. c. constantly take in energy rich foods. d. harvest energy from sunlight. e. convert low energy molecules into high energy molecules
Which of the following statements is true?
a. The hydrogen bonding of cytosine to guanine is an example of complementary base pairing. b. In DNA, adenine always base pairs with guanine, and cytosine always base pairs with thymine. c. Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base. d. When adenine base pairs with thymine, they are linked by three hydrogen bonds. e. None of these statements are true.
Four of the five answers listed below are related by a common phase of mitosis. Select the exception
a. chromosomes decondense b. spindle microtubules disappear c. nucleolus reappears d. chromosomes separate e. nuclear envelope reforms
Which of the following transgenic techniques requires ES cells to be collected from the inner blastocyst?
A) Embryonic stem cell method B) Retrovirus-mediated method C) Pronuclear injection method D) Sperm-mediated transfer method E) Plasma cell membrane fusion method