Which hormone is primarily responsible for the regulation of spermatogenesis in males?
Answer: A
Testosterone, produced by Leydig cells in testes, is the primary hormone regulating spermatogenesis. It acts on Sertoli cells and is essential for sperm production.
Q.2Easy
The menstrual cycle in humans is approximately how many days?
Answer: B
The average menstrual cycle is 28 days, though it can range from 21-35 days. It consists of menstruation, follicular phase, ovulation, and luteal phase.
Q.3Easy
Which intrauterine device (IUD) releases hormones to prevent pregnancy?
Answer: B
Levonorgestrel-releasing IUDs (like Mirena) release the hormone levonorgestrel, which thickens cervical mucus and prevents fertilization, with added uterine effects.
Q.4Easy
What is the primary function of the corpus luteum?
Answer: B
The corpus luteum, formed after ovulation, secretes progesterone, which maintains the endometrium for potential implantation and pregnancy.
Q.5Easy
Which of the following is NOT a barrier method of contraception?
Answer: C
Oral contraceptive pills are hormonal contraceptives, not barrier methods. Barrier methods physically prevent sperm from reaching the ovum.
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Q.6Easy
Which hormone is responsible for the development of male secondary sexual characteristics?
Answer: C
Testosterone is responsible for development of male secondary sexual characters like facial hair, deepening of voice, muscle development, and sperm production.
Q.7Easy
What is the normal duration of the luteal phase of the menstrual cycle?
Answer: B
The luteal phase typically lasts 12-16 days (average 14 days) and is characterized by relatively constant progesterone production from the corpus luteum.
Q.8Easy
Which intrauterine device (IUD) releases copper ions to prevent fertilization?
Answer: B
Copper T 380A is a non-hormonal IUD that works by releasing copper ions which are spermicidal. Levonorgestrel IUD (Mirena, Skyla) are hormonal IUDs.
Q.9Easy
At what age does the average Indian girl experience menarche?
Answer: B
The average age of menarche in Indian girls is 11-13 years, though it can vary based on nutritional status, genetics, and geographic location.
Q.10Easy
Which hormone shows a surge 24-36 hours before ovulation?
Answer: C
The LH surge 24-36 hours before ovulation triggers the final maturation of the oocyte and weakening of the follicle wall, leading to ovulation.
Q.11Easy
In the context of Assisted Reproductive Technology (ART), what does ICSI stand for?
Answer: A
ICSI (Intracytoplasmic sperm injection) is used in severe male factor infertility where a single sperm is injected directly into the oocyte cytoplasm.
Q.12Easy
Which vaccine protects against human papillomavirus-related cervical cancer?
Answer: A
HPV vaccines (bivalent Cervarix and quadrivalent/9-valent Gardasil) prevent infection with high-risk HPV types (16, 18, and others) responsible for cervical cancer.
Q.13Easy
What is the correct chronological order of events during the menstrual cycle?
Answer: A
The menstrual cycle begins with menstruation (days 1-5), followed by proliferative phase (days 5-14), ovulation (day 14), and secretory/luteal phase (days 15-28).
Q.14Easy
Which hormone is essential for maintaining the corpus luteum during the first 8 weeks of pregnancy?
Answer: B
hCG produced by trophoblastic cells maintains the corpus luteum until week 8-10, after which placental progesterone takes over luteal function.
Q.15Easy
What is the recommended interval for cervical cancer screening using Pap smear in women aged 21-65 years with normal previous results?
Answer: B
As per WHO and Indian guidelines, women with normal Pap smear results should be screened every 3 years. Annual screening is reserved for high-risk cases.
Q.16Easy
Which hormone is primarily responsible for maintaining the corpus luteum during early pregnancy?
Answer: A
hCG is secreted by the trophoblast cells of the blastocyst and maintains the corpus luteum, preventing its degeneration and ensuring continued progesterone production during early pregnancy.
Q.17Easy
Which of the following contraceptive methods has the lowest failure rate in typical use?
Answer: B
IUDs have failure rates of less than 1% in typical use, making them one of the most effective contraceptive methods available, with effectiveness approaching that of sterilization.
Q.18Easy
Which sexually transmitted infection is caused by a protozoan parasite and commonly presents with frothy discharge?
Answer: B
Trichomoniasis, caused by Trichomonas vaginalis, presents with greenish-yellow, frothy vaginal discharge and is the most common non-viral STI worldwide.
Q.19Easy
During meiosis II, separation of which structures occurs?
Answer: B
Meiosis II is similar to mitosis; sister chromatids separate at anaphase II, resulting in four haploid cells from the two haploid cells formed after meiosis I.
Q.20Easy
A 28-year-old male presents with azoospermia and is found to have a 47,XXY karyotype. What is this chromosomal abnormality called?
Answer: B
Klinefelter syndrome (47,XXY) is the most common male chromosomal abnormality, presenting with azoospermia, hypogonadism, gynecomastia, and infertility.
