Leptin works to reduce weight gain by
a. preventing absorption of fat by the small
intestine.
b. suppressing the urge to eat.
c. making fat less soluble.
d. stimulating the conversion of fat cells into
skeletal muscle cells.
e. stimulating the increased production of acid
in the stomach that more thoroughly breaks
down fatty acids
B
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Why does the polymerase chain reaction require the samples to undergo numerous cycles, each
containing three different temperatures?
a. The initial cycles don't produce many copies of the original gene since the amplification is exponential in nature. b. The three temperatures are for different processes; the highest temperature separates the double stranded DNA into single strands, the lower temperatures allow a target primer to bind and a DNA polymerase to generate new sequences. c. The enzyme used is from an organism that thrives in high temperatures, so high temperatures must be used. d. Non-target DNA is made during the first 10 cycles so further cycles are required to specifically amplify the target DNA. e. Once the enzyme starts working, you cannot stop the reaction until there are no more nucleotides.
Which area of the brain will integrate taste and smell signals with emotional states and stored
memories? a. the thalamus b. the hypothalamus c. the limbic system d. the pineal gland e. the corpus callosum
Eukaryotic repression generally occurs via physical blockage of the promoter
Indicate whether the statement is true or false
Select the best response to the question. ? Who is covered by the Bloodborne Pathogen Standard?
A) all employees who may come in contact with blood and other infected materials as part of their job duties B) all clinical workers handling blood C) all nurses and ancillary clinical staff D) all hospital employees