The condition of having no sperm in the semen is called ____________________

Fill in the blank(s) with correct word


azoospermia

Biology & Microbiology

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Embryonic stem cells are pluripotent, able to ____

a. divide an unlimited amount of times b. give rise to most, but not all body cell types c. give rise to any of the body cell types d. divide a limited amount of times e. give rise to different, unique individuals

Biology & Microbiology

Alien species are most likely to disrupt natural ecosystems when they:

A) are closely related to native species. B) are similar in appearance to native species. C) assume ecosystem roles of native species. D) are larger in size than native species.

Biology & Microbiology

Plants with "naked" seeds belong to the _______.

a) nonvascular plants b) angiosperms c) seedless vascular plants d) gymnosperms

Biology & Microbiology

All of the following are found in the cell walls of gram-positive bacteria EXCEPT_______

a. peptidoglycan b. teichoic acid c. lipid A d. N-acetylglucosamine e. lipoteichoic acid

Biology & Microbiology