Eukaryotic chromosomes consist of:
a. circular DNA molecules complexed with positively charged nonhistone proteins.
b. circular DNA molecules complexed with negatively charged histone proteins.
c. linear DNA molecules complexed with positively charged histone proteins.
d. linear DNA molecules complexed with negatively charged histone proteins.
e. circular DNA molecules
C
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The three main groups of known organisms include (select all that apply):
A. Bacteria. B. Archaea. C. Eukaryotes. D. Fungi. E. Prokaryotes.
Which of the following statements concerning the corpus luteum is INCORRECT?
A. Secretions of the corpus luteum inhibit LH and FSH secretion. B. Secretions of the corpus luteum prepare the uterus for implantation of the embryo. C. Secretions of the corpus luteum prevent the maturation of primary oocytes. D. The major hormone secreted from the corpus luteum is progesterone. E. The major hormone secreted from the corpus luteum is estradiol.
Cancer cells retain the IF proteins from the tissue of origin even after metastasizing to other tissues. How is this important in the diagnosis and treatment of cancer?
What will be an ideal response?
Refer to the accompanying figure. Which structure is the source of sebum, a substance that inhibits bacterial growth on the surface of the skin?
a. 5
b. 7
c. 10
d. 11
e. 12.