What are the walls of a ureter composed of?
A. skeletal muscle, fibrous connective tissue, and cartilage
B. fibrous connective tissue, cartilage, and mucous membrane
C. mucous membrane and fibrous connective tissue
D. mucous membrane, smooth muscle, and fibrous connective tissue
E. skeletal muscle and mucous membrane
Answer: D
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The genome of an organism contains 14% guanine; therefore, it's genome also contains ____% thymine and ____%
cytosine.
a. 86; 14 b. 14; 36 c. 36; 36 d. 14; 86 e. 36; 14
For your eye to focus on this sentence:a
the ciliary muscle would need to contract for the lens to get rounder. b. the ciliary muscle would need to contract for the lens to get flatter. c. the ciliary muscle would need to relax for the lens to get rounder. d. the ciliary muscle would need to relax for the lens to get flatter. e. the ciliary muscle is not connected to the lens and therefore, not involved in vision.
Which feature distinguishes birds from the rest of the reptiles?
Select one: a. endothermic b. scales c. egg laying d. lungs e. four appendages
In humans, if an XY individual had a deletion of the SRY gene, that person would
A. have both male and female characteristics. B. develop as a male. C. develop as a female. D. have ambiguous genitalia.