Which pair of activities are carrier molecules involved in?

a. passive transport and osmosis
b. active and passive transport
c. active transport and osmosis
d. osmosis and diffusion


Ans: b. active and passive transport

Biology & Microbiology

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Membrane potential will affect the directional movement of

A. Glucose (C6H12O6) B. Cholesterol C. Potassium (K+) D. Oxygen (O2)

Biology & Microbiology

An example of a suppressor mutation would be

A. An intragenic mutation that restores the inactive protein's structure B. An intergenic mutation that increases the activity of a protein performing a different function as the mutated protein C. An intergenic mutation that activates a transcription factor that increases the espression of a normal protein D. A mutation that suppresses cell growth

Biology & Microbiology

Fossil evidence indicates that horses have gradually increased in size over geologic time. Which of the following terms best describes this?

A) artificial selection B) directional selection C) stabilizing selection D) disruptive selection E) sexual selection

Biology & Microbiology

Which of the following are among the Archaea that have been cultured in the laboratory?

a. Crenarchaeota and Korarchaeota b. Crenarchaeota and Euryarchaeota c. Nanoarchaeota and Korarchaeota d. Euryarchaeota and Nanoarchaeota

Biology & Microbiology