The sharp peak of estradiol secretion during the ovarian cycle
A. stimulates the secretion of LH and ovulation.
B. stimulates growth of the uterine lining.
C. inhibits progesterone production.
D. inhibits the secretion of LH and FSH.
E. stimulates completion of meiosis I.
Answer: A
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This type of tissue is rich in extracellular matrix and includes tendon and cartilage.
A. muscle B. connective C. epithelial D. nervous E. hepatic
Plant roots that are in a horizontal position grow down because:
A. Cells on the upper side elongate more than those on the lower side. B. Auxins are stimulating cells on the lower side to elongate more. C. Auxins are being pulled to the upper side. D. Auxins are having no influence on this process. E. Statoliths are pushing auxins to the upper side.
Variability in offspring is largely a result of ____
a. mutations b. nucleosomes c. Okazaki fragments d. DNA repairs e. RNA primers
Which one of the following types of white blood cells is capable of phagocytosis?
A) eosinophils B) basophils C) neutrophils D) B lymphocytes E) both eosinophils and B lymphocytes