How many nucleotides can be added by eukaryotic polymerases per second?
A. 400
B. 40
C. 500
D. 50
E. 1,000
Answer: D
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Order the steps involved in the activity of a muscle spindle:1. Muscle spindle is stretched.2. Reflex action occurs.3. Contraction of muscle fibers adjoining the muscle spindle.4. Nerve signals are generated.5. The muscle relaxes.6. The muscle's length increases.
A. 2,1,6,3,4,5 B. 2,3,1,4,5,6 C. 5,6,1,4,2,3 D. 5,1,2,4,3,6 E. 1,6,2,4,5,3
Which covalent bond involves only 2 electrons:a
single b. double c. triple d. single and double. e. single and triple.
The nucleoli, found within the nucleus, are the sites of ____ synthesis
a. chromatin b. mRNA c. ribosomal subunit d. gene e. protein
Collagens interact directly with which of the following types of junctions?
A) gap junctions B) tight junctions C) hemidesmosomes D) desmosomes E) None of the above are correct.