What type of fertilization occurs during sexual reproduction in rotifers?
a. internal
b. external
A
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Which of the following statements is TRUE when comparing the myosin gene between a rat and a mouse?
A. The nucleotide sequences are identical. B. The genes encode for different proteins. C. Each species has accumulated random mutations, but the sequences are similar. D. Both species are so far apart that there is no homology between the two sequences. E. The genes encoding myosin closely resemble those encoding actins.
The normal flora of the adult large bowel consists predominantly of:
a. anaerobic species. b. Staphylococcus. c. Enterococcus. d. Enterobacteriaceae.
Which plasma membrane component can be either found on its surface or embedded in the membrane structure?
a) cholesterol b) protein c) carbohydrate d) phospholipid
Prior to their release, where are the special chemicals called neurotransmitters stored in a neuron?
A) dendrites B) axon C) synaptic knob D) cell body