In a pedigree chart, a male showing the specific trait

being studied is indicated by a
a. darkened square.
b. clear square.
c. darkened diamond.
d. clear triangle.
e. darkened circle.


Answer: a

Biology & Microbiology

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A radula is a specialized feeding organ used to scrape material off of food for ingestion, much like a cheese grater scrapes shreds off of a block of cheese. Snails, which have this structure, are thus which kind of feeder?

A) suspension feeder B) fluid feeder C) deposit feeder D) mass feeder

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O2 is transported from air in the lungs into the blood through the process of ____

a. active transport b. simple diffusion c. facilitated diffusion d. osmosis e. active transport

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Fats are digested to form 

A. amino acids and energy. B. fats. C. fatty acids and glycerol. D. simple sugars.

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"Engaging in aerobic activity three times each week will reduce cholesterol levels" is a:

A) substantiated explanation. B) testable hypothesis. C) scientific control. D) critical experiment. E) null hypothesis.

Biology & Microbiology