Question 1

Which of the following best describes the difference between haploid and diploid cells in humans?

Accepted Answer

Haploid cells contain one set of chromosomes, while diploid cells contain two sets of chromosomes.

Question 2

During which phase of meiosis do homologous chromosomes separate, and what is the significance of this event?

Accepted Answer

Anaphase I; it reduces the chromosome number by half, ensuring genetic diversity in gametes.

Question 3

Which hormone is primarily responsible for stimulating ovulation in the female reproductive cycle?

Accepted Answer

Luteinizing hormone (LH)

Question 4

A woman’s progesterone levels drop significantly during her menstrual cycle. What is the most likely outcome?

Accepted Answer

The endometrial lining is shed, resulting in menstruation.

Question 5

Which structure is the site of fertilization in the human female reproductive system?

Accepted Answer

Oviduct (fallopian tube)

Question 6

Why must implantation occur for pregnancy to continue?

Accepted Answer

Implantation allows the embryo to establish a nutrient and waste exchange with the mother.

Question 7

Which hormone is secreted by the embryo to maintain the corpus luteum during early pregnancy?

Accepted Answer

Human chorionic gonadotropin (hCG)

Question 8

Which of the following best explains why FSH levels are associated with fewer eggs in older women?

Accepted Answer

Higher FSH levels indicate decreased ovarian reserve, as the body increases FSH to stimulate remaining follicles.

Question 9

Which of the following is a major event of the first trimester of pregnancy?

Accepted Answer

Organ systems begin to develop.

Question 10

Which process results in genetic variation during meiosis?

Accepted Answer

Crossing over during Prophase I

Question 11

A patient is found to have a mutation that prevents the production of LH. Which of the following is a likely consequence?

Accepted Answer

Ovulation would not occur.

Question 12

Which of the following best describes the role of the endometrium?

Accepted Answer

It provides a site for embryo implantation and supports early pregnancy.

Question 13

Which of the following is true regarding the difference between mitosis and meiosis?

Accepted Answer

Mitosis produces genetically identical cells, while meiosis produces genetically diverse gametes.

Question 14

Which hormone is responsible for maintaining the endometrial lining during pregnancy?

Accepted Answer

Progesterone

Question 15

Which of the following best explains why avoiding sex only on the day of ovulation does not fully prevent pregnancy?

Accepted Answer

Sperm can survive in the female reproductive tract for several days, so fertilization can occur even if intercourse happens before ovulation.

Question 16

Which of the following is a function of the male reproductive system?

Accepted Answer

Production and delivery of sperm

Question 17

Which hormone is primarily responsible for the development of secondary sexual characteristics in males?

Accepted Answer

Testosterone

Question 18

Which of the following best describes the function of the corpus luteum?

Accepted Answer

It secretes progesterone to maintain the uterine lining.

Question 19

Which event marks the beginning of the luteal phase in the menstrual cycle?

Accepted Answer

Formation of the corpus luteum after ovulation

Question 20

Which of the following best explains the role of estrogen in the menstrual cycle?

Accepted Answer

It stimulates the thickening of the endometrial lining.

Study Guide: Human Reproduction and Embryonic Development

Study Guide - Practice Questions