What enzyme breaks the hydrogen bonds between the bases of DNA in preparation for replication?
A. Cyclin D
B. DNA helicase
C. Spliceosome
D. DNA polymerase
Answer: B
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Which muscle surrounds the anus?
A) levator ani iliococcygeus B) pubococcygeus C) external anal sphincter D) external urethral sphincter
The plasma membrane of a skeletal muscle fiber is called the ________.
Fill in the blank(s) with the appropriate word(s).
The two types of cells that make up the nervous system are
A. macrophages and mast cells. B. neurons and glial cells. C. neurons and chondrocytes. D. mast cells and fibrocytes. E. neurons and mast cells.
Which of the following is an example of declarative memory?
A. recognition of a person's face and matching a name to it B. remembering how to ride a bicycle C. being able to recall a phone number for only a short period of time D. being given a specific address and being able to recall it several days or weeks later E. responding to the sight, smell, taste, or thought of one's favorite food with salivation and hunger pangs