What controls whether an embryo will develop testes or ovaries?
A. Pituitary gland
B. Hypothalamus
C. Y chromosome
D. Presence or absence of estrogen
Therefore, the Correct Answer is C.
More Questions on TEAS 7
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Q #1: What controls whether an embryo will develop testes or ovaries?
A. Pituitary gland
B. Hypothalamus
C. Y chromosome
D. Presence or absence of estrogen
Answer Explanation
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Q #2: Which of the following chemicals is released by one type of immune cell to directly activate another type of immune cell?
A. Cytokines B.
B. Lysozymes C.
C. Perforin D.
D. Granzymes.
Answer Explanation
Cytokines.
Cytokines are chemicals released by one type of immune cell to directly activate another type of immune cell.
They are small proteins that act as messengers between cells and play a key role in regulating the immune response.
Choice B.
Lysozymes is not the correct answer because lysozymes are enzymes that break down bacterial cell walls and do not directly activate other immune cells.
Choice C.
Perforin is not the correct answer because perforin is a protein that forms pores in the membranes of target cells and does not directly activate other immune cells.
Choice D.
Granzymes is not the correct answer because granzymes are enzymes that enter target cells and trigger apoptosis (cell death) and do not directly activate other immune cells.
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Q #3: Which hypothalamic hormone contributes to the regulation of the male reproductive system?
A. Luteinizing hormone
B. Gonadotropin-releasing hormone
C. Follicle-stimulating hormone
D. Androgens
Answer Explanation
What are the hormones that regulate the male reproductive system?
Three hormones are the principle regulators of the male reproductive system: follicle-stimulating hormone (FSH) stimulates spermatogenesis; luteinizing hormone (LH) stimulates the production of testosterone; and testosterone stimulates the development of male secondary sex characteristics and spermatogenesis.
