Which group of arthropods can be distinguished from other groups by their calcium-containing, hardened exoskeleton and mostly marine habitat?
A. Insects
B. Millipedes
C. Chelicerates
D. Crustaceans
E. Trilobites
Answer: D
Biology & Microbiology
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Where are sperm formed?
A. epididymis B. seminal vesicle C. testis D. vas deferens E. prostate gland
Biology & Microbiology
Bacterial flagella are composed of three parts: the ________ body, which is embedded in the cell, the hook, and the ________, which is the longest part of the flagellum.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The female reproductive system contains all of the following structures except the
a. cervix. b. Bartholin's gland. c. clitoris. d. acrosome. e. labia.
Biology & Microbiology
Untreated infection of males with Neisseria gonorrhoeae may result in
A) gummas. B) sterility. C) trachoma. D) glomerulonephritis. E) penile cancer.
Biology & Microbiology