This type of mechanoreceptor is found in the lips, nipples, and fingertips and helps us to precisely determine contact with something else
A) free nerve endings
B) Pacinian corpuscles
C) hair root plexus
D) Meissner's corpuscles
D
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When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?
A) The pH of the matrix increases. B) ATP synthase pumps protons by active transport. C) The electrons gain free energy. D) The cytochromes phosphorylate ADP to form ATP. E) NAD+ is oxidized.
According to the Baltimore system, there are ______ major groups of viruses
A. 4 B. 5 C. 6 D. 7 E. 8
Two organisms are very similar both in terms of molecular and physical characteristics
However, there is at least one characteristic that is not shared by these organisms—each organism has at least one evolutionary novelty that is not present in the other organism and thus these organisms do not interbreed. As a result, what is likely the lowest taxonomic classification that is shared by these organisms?
a. species b. genus c. family d. order
Oxygen and carbon dioxide are exchanged due to the process of
a. osmosis. b. facilitated diffusion. c. diffusion. d. Brownian movement. e. active transport.