Children sometimes pick up "bloodsuckers" in ponds, but these segmented animals typically spend most of their time parasitizing turtles. Some are used medicinally to improve blood flow and reduce inflammation near injuries in humans. They are _____.
Fill in the blank(s) with the appropriate word(s).
Answer: leeches, a type of annelid
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The thin filament contains _____ molecules.
A. actin B. myosin C. troponin D. tropomyosin E. All of the choices are correct except myosin
When carbon dioxide is absorbed into water, the solution becomes more
a. acidic. b. basic. c. warm. d. red.
Which of the following is NOT true of proteins?
a. They determine the structure and function of cells and tissues. b. They function as receptors. c. They function in recognition. d. They are the code for molecules that are important for life processes. e. They enable cells to communicate.
If you drive south of Las Cruces in the winter, you see a bird called a Kestrel every two miles. The birds are holding territories, thus regularly spaced out. This is an example of
A) learned dispersion. B) clumped dispersion. C) random dispersion. D) uniform dispersion. E) artificial dispersion.