Where are cilia found in the human body?
A) lining blood vessels
B) oral cavity
C) female reproductive system
D) upper respiratory tract
E) large intestine
Answer: D
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Which of the below processes naturally releases CO2 into the atmosphere (select all that apply)?
A. volcanism B. chemical weathering C. subduction D. biomineralization E. oxidation of fossil fuels (via bacteria)
Streptococcus pyogenes
A. is alpha-hemolytic. B. is gamma-hemolytic. C. is beta-hemolytic. D. may form endospores. E. is alpha-hemolytic AND may form endospores.
Approximately _____ percent of a leaf is composed of air spaces
a. 25 b. 33 c. 50 d. 75
Which of the following is characterized by a cell releasing a signal molecule into the environment, followed by a number of cells in the immediate vicinity responding?
A) hormonal signaling B) autocrine signaling C) paracrine signaling D) endocrine signaling E) synaptic signaling