The nephron begins in the ____.
A. glomerulus
B. loop of Henle
C. kidney cortex
D. ureter
E. medulla
Answer: C
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Antibody and antigen are held to one another by covalent bonds
Indicate whether this statement is true or false.
The range of conditions and resources required by a population is known as its ____, while the range of conditions and
resources that it actually uses is known as its ____.
a. fundamental niche; habitat b. trophic level; habitat c. realized niche; fundamental niche d. fundamental niche; realized niche e. ecological niche; trophic level
The sea slugs (nudibranchs) may protect themselves by using which method?
a. Their raspy radula may be used as a defense organ to injure potential predators. b. They make and secrete distasteful substances. c. They use camouflage. d. They hide in their shells. e. They use defensive weapons taken from their prey (toxins and nematocysts).
In plants, ovules develop into:a
seeds. b. fruits. c. corolla. d. calyx. e. bracts.