The three Ras genes in the human genome were named H, N and K based on
a) The histone, nucleosome and kinase activities of each
b) Expression location in head, neck and kidney tissues
c) The type of cancer that each was first associated with by researchers
d) The last name of the researcher who discovered them
Answer: c) The type of cancer that each was first associated with by researchers
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All of the following occur in a countercurrent exchange EXCEPT
a. flow in opposite directions. b. a concentration gradient. c. a large surface area. d. short contact time for exchange
Which of the following is a DNA palindrome?
a) 5'GAAATTTC-3' b) 5'ACGTACGT-3' c) 5'AATTTTAA-3' d) 5'AAAATTTT-3' e) All of the above are palindromes
An ancestral species and all its evolutionary descendants define a(n) ________
A) outgroup B) clade C) genus D) ingroup
Answer the following questions true (T) or false (F)
1. When a neuron is resting, it has a higher concentration of Na+ ions inside the cell membrane than outside. 2. The action potential moves across the synaptic cleft as an electrical signal. 3. The parasympathetic division of the autonomic nervous system would be key in preserving an individual who is escaping from a dangerous situation.