All Free Biology MCQs with Answers
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19,844 questions · page 801 of 993
16001. How is the time of ovulation and the onset of menstruation-related to the human menstrual cycle?
- A. Both are triggered by high luteinizing hormone "spikes" (sharp increase in concentration
- B. Ovulation occurs approximately 7 days after the first day of menstruation
- C. Ovulation occurs approximately 14 days before the first day of menstruation
- D. All of the above
Explanation: The most accurate option is: c) Ovulation occurs approximately 14 days before the first day of menstruation
Correct answer: Ovulation occurs approximately 14 days before the first day of menstruation- A. Testes
- B. Cowper's gland
- C. Prostate gland
- D. Seminal vesicles
Explanation: The correct answer is d) Seminal Vesicles. Seminal vesicles are a pair of pouch-like structures located behind the bladder and contribute…
Correct answer: Seminal vesicles16003. Menarche is:
- A. The gradual decrease of menstruation
- B. A type of reproductive surgery
- C. The first menstrual flow
- D. The first stage of labor
Explanation: The correct answer is c) The first menstrual flow. Menarche refers to the first occurrence of menstruation in a girl's life.
Correct answer: The first menstrual flow- A. Rete testis
- B. Vas deferens
- C. Epidiymis
- D. Seminal vesicle
Explanation: The correct answer is c) Epididymis. The epididymis is a coiled tube that is closely attached to the back of each testis.
Correct answer: Epidiymis- A. Progesterone
- B. STH
- C. LH
- D. FSH
Explanation: The correct answer is d) FSH stimulates spermatogenesis by stimulating the Sertoli cells to complete sperm development from spermatids.
Correct answer: FSH- A. Follicular phase
- B. Teal phase
- C. Ovulatory phase
- D. Menstruation
Explanation: The phase of the menstrual cycle that typically lasts for 7-8 days is known as the "menstrual phase" or "menstruation." This is the time…
Correct answer: Menstruation- A. Urethra
- B. Ejaculatory duct
- C. Seminiferous tubules
- D. Vas deferens
Explanation: Explanation for this question will be added soon.
Correct answer: Vas deferens- A. Scrotum
- B. Prepuce
- C. Seminiferous tubules
- D. Epididymis
Explanation: Each testis consists of a highly complex duct system called seminiferous tubules, in which repeated division by the cells of the germinal…
Correct answer: Seminiferous tubules- A. A pair of testes
- B. Seminiferous tubules
- C. Male copulatory organ
- D. Both A and C
Explanation: penis and testes are both part of external genitiala
Correct answer: Male copulatory organ- A. Ejaculatory gland
- B. Prostate gland
- C. Seminal vesicle
- D. Bulbourethral gland
Explanation: Explanation for this question will be added soon.
Correct answer: Bulbourethral gland16011. Sperm secrete which enzyme?
- A. Acrosome
- B. Hyaluronidase
- C. Lipase
- D. Both A and B
Explanation: Explanation for this question will be added soon.
Correct answer: Both A and B- A. 2nd month
- B. 3rd month
- C. 4th month
- D. 5th month
Explanation: Explanation for this question will be added soon.
Correct answer: 3rd month16013. Ovum receive sperm at:
- A. Animal pole
- B. Vegetal pole
- C. Both A and B
- D. None of these
Explanation: Explanation for this question will be added soon.
Correct answer: Animal pole- A. 1-5
- B. 15-28
- C. 11-15
- D. 6-14
Explanation: Explanation for this question will be added soon.
Correct answer: 6-14- A. Epiderm
- B. Myometrium
- C. Endometrium
- D. Epimetrium
Explanation: Explanation for this question will be added soon.
Correct answer: Endometrium- A. Progesterone
- B. Oxytocin
- C. Testosterone
- D. Estrogen
Explanation: Explanation for this question will be added soon.
Correct answer: Testosterone- A. LH
- B. Estrogen
- C. FSH
- D. Progesterone
Explanation: Explanation for this question will be added soon.
Correct answer: FSH- A. Anaphase I
- B. Prophase I
- C. Metaphase I
- D. Metaphase ll
Explanation: Explanation for this question will be added soon.
Correct answer: Metaphase ll- A. n
- B. 2n
- C. 3n
- D. 4n
Explanation: Explanation for this question will be added soon.
Correct answer: 2n- A. After about 7 days of fertilization
- B. After about 30 days of fertilization
- C. After about two months of fertilization
- D. Alter about 3 weeks of fertilization
Explanation: Explanation for this question will be added soon.
Correct answer: Alter about 3 weeks of fertilization