Even though DNA polymerase has a proofreading function, it still introduces errors in the newly synthesized strand at a rate of 1 per 107 nucleotides
To what degree does the mismatch repair system decrease the error rate arising from DNA replication?
(a) 2-fold
(b) 5-fold
(c) 10-fold
(d) 100-fold
(d)
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An individual animal that can produce both sperm and eggs is known as:
A. a gametophyte B. an hermaphrodite C. a morphodyte D. a bisexual E. a transexual
The first organisms
a. had to be aerobic. b. were pathogenic. c. had to be anaerobic. d. were heterotrophs. e. were multi-celled
Synaptic integration means that ____
a. positive or excitatory stimuli produce an excitatory postsynaptic potential b. the positive and negative ions neutralize each other c. excitatory and inhibitory signals are summed in a receiving neuron d. the adjacent neurons interact so that excitatory and inhibitory stimuli cancel each other out e. excitatory signals take precedence over inhibitory signals
Which condition involves an uninjured body part experiencing pain as the result of injury to another part of the body?
A) receptor potential B) sensory adaptation C) referred pain D) interceptors