Nokea
What is an organelle that helps the sperm to penetrate the ovum?
- A. Acrosome
- B. Zona pellucida
- C. Megalis
- D. None of the above
Correct Answer: A
Rationale: The correct answer is Acrosome. The acrosome is an organelle located at the head of a sperm cell and contains enzymes that aid in the penetration of the ovum during fertilization. The Zona pellucida is a glycoprotein membrane surrounding the ovum, not an organelle. Megalis is not a relevant organelle in this context. Therefore, the correct choice is A, Acrosome.
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What is one role of the hormone estrogen?
- A. Stimulates the development of the milk-producing tissue.
- B. Stimulates the production of lactoferrin.
- C. Stimulates the development of the nipple and duct system in the breast.
- D. Stimulates the secretion of relaxin.
Correct Answer: A
Rationale: The correct answer is A: Estrogen stimulates the development of the milk-producing tissue in the breast. This hormone is essential in preparing the breast for milk production. Choice B is incorrect because lactoferrin production is not a primary role of estrogen. Choice C is incorrect as estrogen primarily influences the development of the breast tissue rather than specifically the nipple and duct system. Choice D is incorrect because relaxin secretion is not a function typically associated with estrogen.
Which of the following is not a complication of menopause?
- A. Fractures
- B. Alzheimer's disease
- C. Congestive heart failure
- D. Painful intercourse
Correct Answer: C
Rationale: Congestive heart failure is not typically associated with menopause. Menopause is linked to an increased risk of fractures due to bone density loss, a higher risk of Alzheimer's disease due to hormonal changes, and painful intercourse due to vaginal dryness and thinning of tissues. While cardiovascular health can be affected by menopause, congestive heart failure is not a direct complication associated with menopause.
What phase corresponds with the luteal phase?
- A. Menstrual phase
- B. Follicular phase
- C. Secretory phase
- D. Menstrual phase
Correct Answer: C
Rationale: The luteal phase corresponds with the secretory phase. During the menstrual cycle, the luteal phase follows ovulation and is characterized by the development of the corpus luteum, secreting progesterone to prepare the endometrium for a potential pregnancy. The other choices, menstrual phase (A), follicular phase (B), and the repeated choice of menstrual phase (D) do not align with the luteal phase and its functions.
During menopause, what do ovaries stop producing?
- A. Progesterone and Estrogen
- B. Prolactin
- C. Human chorionic gonadotropin
- D. Oxytocin
Correct Answer: A
Rationale: During menopause, the ovaries stop producing progesterone and estrogen. Progesterone and estrogen are hormones essential for the menstrual cycle and reproductive functions. Prolactin is a hormone responsible for milk production in the breasts and is not primarily produced by the ovaries. Human chorionic gonadotropin (hCG) is produced during pregnancy to support the production of progesterone and estrogen. Oxytocin is a hormone involved in labor and breastfeeding, not primarily produced by the ovaries.
Which of the following is an example of a viviparous animal?
- A. Goat
- B. Duck
- C. Crocodile
- D. None of the above
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.