After sperm leave the epididymis, what structure do they enter next?


Answer: Vas deferens

Biology & Microbiology

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The water vascular system of echinoderms _____

A) functions as a circulatory system that distributes nutrients to body cells B) functions in locomotion and feeding C) is bilateral in organization, even though the adult animal is not bilaterally symmetrical D) moves water through the animal's body during suspension feeding E) is analogous to the gastrovascular cavity of flatworms

Biology & Microbiology

Which of the following is not true about the G + C content percentages in DNA of organisms?

A. Similar G + C percentages only suggests relatedness if the two organisms are also alike phenotypically. B. Organisms with different G + C percentages have dissimilar base sequences. C. Organisms with similar G + C percentages have similar base sequences. D. All of the choices are correct.

Biology & Microbiology

Neurotransmitters are stored in vesicles at the nerve terminal. Assuming a neurotransmitter is a protein, where was it synthesized?

A. the cytoplasm B. the rough endoplasmic reticulum C. the Golgi apparatus D. the lysosome

Biology & Microbiology

A color-blind man and a woman with normal vision whose father was color blind have a son. Color

blindness, in this case, is caused by an X-linked recessive gene. If only the male offspring are considered, the probability that their son is color-blind is a. 25 percent. b. 50 percent. c. 75 percent. d. 100 percent. e. 0 percent.

Biology & Microbiology