Which of the following is not involved in DNA replication?
a) DNA polymerase
b) Primase
c) DNA Helicase
d) A promoter
e) All of the above are necessary
Answer: d) A promoter
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You are interested in studying a receptor and decide to make a knockout mouse. However, you notice severe developmental defects that result in embryonic lethality in this receptor knockout
Which developmental process is most likely affected when you disrupt a receptor on the cell surface, disrupting its ability to receive a signal and initiate a transduction pathway? A) Cell proliferation B) Cell-cell interactions C) Cell differentiation D) Cell movement E) Apoptosis
Which of the following is a true statement about experimentation?
A) Variables in an experiment cannot be manipulated by the researcher. B) Some hypotheses cannot be tested by experimentation. C) Experimentation should test at least two or more hypotheses at the same time. D) True randomization of subjects is impossible during experimentation.
In males, gonadotropin-releasing hormone stimulates the __________ to secrete __________
a. anterior pituitary; inhibin b. anterior pituitary; FSH and LH c. anterior pituitary; testosterone d. posterior pituitary; FSH and LH e. posterior pituitary; testosterone
Narrow, parallel-veined leaves are characteristic of:
A) both monocots and dicots. B) many dicots. C) non-flowering seed plants. D) monocots.