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
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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
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
Fats are digested to form
A. amino acids and energy. B. fats. C. fatty acids and glycerol. D. simple sugars.
"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.