If you were asked to determine if there is life on Mars, what would you propose to do?

A. Look for Martians that have bodily characteristics similar to humans.
B. Send a manned spaceship to Mars.
C. Attempt to detect oxygen in the atmosphere.
D. Look for water.


D. Look for water.

Biology & Microbiology

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Subway air and water distribution systems harbor dangerous levels of pathogenic microorganisms

Indicate whether the statement is true or false.

Biology & Microbiology

The structures labeled "5" are

a. trichocysts. b. micronuclei. c. flagella. d. pili. e. gullet.

Biology & Microbiology

A rat had one bad experience with a poisoned food that caused it to become sick. This rat will now avoid that food due

to a behavior known as: a. classical conditioning. b. habituation.

c. imprinting. d. insight. e. operant conditioning

Biology & Microbiology

Absolute refractory period is the period when the cell is incapable of generating action potential. During this period, voltage-gated Na+ channel undergoes conformational change from (i) ___________________________. This leads to the (ii) ___________ propagation of action potential from axon to axon terminus.

a) (i) inactive conformation to deactivated conformation, (ii) antidromic b) (i) inactive conformation to deactive conformation, (ii) orthodromic c) (i) inactive conformation to active conformation, (ii) orthodromic d) (i) inactive conformation to active conformation, (ii) antidromic

Biology & Microbiology