Leydig cells ________

a. secrete testosterone
b. activate the sperm flagellum
c. support spermatogenesis
d. secrete seminal fluid


Answer: a. secrete testosterone

Biology & Microbiology

You might also like to view...

In the garden peas example above, a tall plant with white flowers crossed with a dwarf plant with

purple flowers produces 1/4 tall purple flowers, 1/4 tall white flowers, 1/4 dwarf purple flowers, and 1/4 dwarf white flowers. What is the genotype of the parents? What will be an ideal response?

Biology & Microbiology

Once labor begins in childbirth, contractions increase in intensity and frequency, causing more contractions to occur until delivery. The increasing labor contractions of childbirth are an example of which type of regulation?

A) positive feedback B) negative feedback C) feedback inhibition D) enzymatic catalysis

Biology & Microbiology

____ are cells of the adaptive immune system that can activate B cells by binding to MHC class II protein–antigen complexes

Fill in the blank with the appropriate word.

Biology & Microbiology

The study and diagnosis of antigen-antibody interactions in the blood is known as

A) immunology. B) hematology. C) serology. D) cytology. E) histology.

Biology & Microbiology