What do the different parts of the male reproductive tract provide to semen?
What will be an ideal response?
The seminiferous tubules provide the sperm. Seminal vesicles, the prostate, and bulbourethral glands provide a thick fluid that contributes to semen. The seminal vesicles produce fructose (a sugar) that serves as the energy source for sperm. Prostate gland secretions help raise the pH of the female reproductive tract, making it more hospitable to sperm. Bulbourethral glands, secrete an alkaline mucus that neutralizes any residue of acidic urine in the urethra.
You might also like to view...
Imagine that sexual reproduction could occur between hyphae that were the same mating type. How might this affect rates of evolution in fungi?
A. Rates of evolution would be lower because genetic variation would be lower. B. Rates of evolution would be higher because more novel genetic combinations are generated through sexual reproduction. C. Rates of evolution would stay the same because as long as sexual reproduction is occurring, it does not matter if it is between individuals of the same or different mating type.
Refer to Figure 49-1. Which of the following hormones is secreted by the adrenal cortex?
a. 1 b. 2 c. 4 d. 6 e. 8
In living organisms, chemical reactions responsible for growth, repair, and nutrition are collectively referred to as:
a. development b. metabolism c. adaptation d. genetics e. homeostasis
Which of the following statements about nucleotide structure is false?
a. The sugar can be either ribose or deoxyribose. b. The sugar is bonded to the phosphate group. c. The nitrogenous base is bonded to the sugar. d. The phosphate group is bonded to the nitrogenous base.