Which of the following is/are true statement(s) regarding the law of gravitation?
A. All bodies are attracted to one another with a force proportional to the product of their masses.
B.All bodies are attracted to one another with a force inversely proportional to the square of the distance between them.
C. The law of gravitation ceases to exist outside the earth's atmosphere.
D. both A and B
E. all of the above
D. both A and B
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Enzymes function identically in all species
Indicate whether the statement is true or false
The major organ systems develop during the germinal prenatal period
Indicate whether the statement is true or false.
Which of the following induces the production of a specific antibody?
a) Phagocytosis b) Antigen c) Antibody d) Defensin e) Immunoglobulin
Which of the following is true concerning women's hormone levels in menopause?
A) Generally hormone secretion remains relatively constant. B) Serum levels of follicle stimulating hormone (FSH) and Leutinizing hormone (LH) rise. C) Ovarian production of estrogen decreases but progesterone production remains constant. D) The number of tissue receptors may increase, requiring greater hormone secretion to achieve the same effect.