________ are composed of amino acids

A) Proteins
B) Lipids
C) Bases
D) Carbohydrates
E) Nucleic acids

Answer: A

Environmental & Atmospheric Sciences

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A motor neuron connects to muscle cells through

A. myofibrils. B. chemical synapses that use the neurotransmitter acetylcholine. C. sarcomeres. D. electrical synapses.

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What is the difference between an endotherm and an ectotherm?

What will be an ideal response?

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ASOS visibility measurements

A) rely on the ceilometer. B) uses passive sensors. C) are based on scattering by nearby particles. D) all of the above E) none of the above

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What type of rock is derived from the bits and pieces of former rocks?

A) sedimentary B) metamorphic C) igneous D) hydrothermal

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