Water soluble hormones ____
a. are derived from cholesterol
b. interact with DNA receptors
c. include estrogen and testosterone
d. pass through target cell membranes
e. require second messenger systems
ANSWER: e
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Which of the following statements is false regarding the process of seamless cloning?
A. 3' sticky ends on both the insert and the vector hybridize, and DNA polymerase and DNA ligase complete the circular recombinant molecule. B. Following PCR, the generated insert DNA is mixed with the cleaved vector and an exonuclease is added to degrade the 5' ends of all strands. C. The 5' ends of the oligonucleotide primers contain a recognition site for a restriction enzyme that allows sticky ends to form between the inserted DNA and the vector. D. The 5' ends of the oligonucleotide primers are specific to nucleotides at the desired junction site of the vector.
The "grandmother hypothesis" suggests that natural selection may have favored a woman ________
A) moving away from her children and grandchildren B) focusing her energy on caring for her grandchildren, instead of producing more children C) focusing her energy on the production of as many children as possible before reaching menopause D) helping her sisters produce more children
Which of the following are NOT considered to belong to the Archaea?
A) Thermophiles B) Eubacteria C) Acidophiles D) Halophiles E) Methanogens
Which group is most distantly related to green algae?
A. Ciliates B. Dinoflagellates C. Diplomonads D. Apicomplexans E. Diatoms