Action potentials occur when _____
a. potassium gates close
b. a stimulus pushes membrane potential to threshold
c. sodium-potassium pumps kick into action
d. neurotransmitter is reabsorbed
D
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The placental mammalian counterpart of Australia’s
spiny anteater is (are) the a. Tasmanian devil. b. aardvark. c. giant anteater. d. woolly lemur. e. aardvark and giant anteater.
Not all vertebrates are considered chordates because not all of them possess tails as adults.
a. true b. false
Contain anticodons that match the codons sued to specify which amino acid should be added to the growing polypeptide chain during protein synthesis
What will be an ideal response?
Which of the following would NOT be true of cDNA produced using horse liver tissue as a starting material?
A. It is a copy of an mRNA expressed in horse liver cells. B. It is produced from mRNA using reverse transcriptase. C. It could be used to create a library of genes expressed in horse liver. D. It can be sequenced using the dideoxy chain-termination method. E. It contains genes from horse liver cells with both exons and introns.