Question 1

Which of the following best describes the function of gonads in the human reproductive system?

Accepted Answer

Gonads are organs that produce hormones and gametes.

Question 2

During meiosis I, what is the genetic outcome of the division?

Accepted Answer

A diploid cell divides to produce two haploid cells.

Question 3

Which process during prophase I of meiosis increases genetic diversity?

Accepted Answer

Crossover between homologous chromosomes

Question 4

If a primary spermatocyte contains $$2n$$ chromosomes, how many chromosomes will each spermatid have after meiosis II?

Accepted Answer

$$n$$

Question 5

Which structure in the testes is responsible for the production of sperm cells?

Accepted Answer

Seminiferous tubules

Question 6

What is the role of Sertoli cells in the seminiferous tubules?

Accepted Answer

Form the blood-testis barrier and promote maturation of sperm cells

Question 7

Which of the following correctly describes the alignment of chromosomes during metaphase I of meiosis?

Accepted Answer

Homologous pairs line up randomly at the metaphase plate, with each pair attached to spindle fibers from opposite poles.

Question 8

Failure of the testes to descend into the scrotum during fetal development results in which condition?

Accepted Answer

Cryptorchidism

Question 9

How many genetically unique gametes can be produced from independent assortment of 23 chromosome pairs during meiosis?

Accepted Answer

More than 8 million ($$2^{23}) $$possible combinations

Question 10

Which of the following is TRUE regarding the outcome of meiosis II?

Accepted Answer

Sister chromatids are separated, resulting in two genetically unique haploid cells.

Question 11

In males, what is the final product of spermatogenesis after both meiotic divisions?

Accepted Answer

Four mature sperm cells

Question 12

Which equation best represents the number of possible chromosome combinations due to independent assortment in humans?

Accepted Answer

$$2^{23}$$

Question 13

Which of the following is a function of the interstitial cells (Leydig cells) in the testes?

Accepted Answer

Produce and secrete male sex hormones such as testosterone

Question 14

During anaphase I of meiosis, what happens to the chromosome pairs?

Accepted Answer

Homologous chromosome pairs are separated, each cell receives one member of the pair.

Question 15

Which structure carries the testes, ductus deferens, nerves, and blood vessels during descent into the scrotum?

Accepted Answer

Spermatic cord

Question 16

What is the primary function of the epididymis in the male reproductive system?

Accepted Answer

Maturation and storage of sperm cells

Question 17

Which of the following best explains why gametes are haploid?

Accepted Answer

Haploid gametes allow for combination with another haploid gamete during fertilization, restoring diploid chromosome number.

Question 18

Which of the following is NOT a function of the accessory glands in the male reproductive system?

Accepted Answer

Production of gametes

Question 19

Which of the following statements about crossover during meiosis is correct?

Accepted Answer

Crossover occurs between homologous chromosomes, increasing genetic diversity.

Question 20

A mutation prevents the formation of the blood-testis barrier in the seminiferous tubules. What is a likely consequence?

Accepted Answer

Developing sperm cells may be attacked by the immune system.

Chapter 22: The Male Reproductive System and Cellular Basis of Gamete Formation

Study Guide - Practice Questions