A pyrimidine or purine base that has been joined with a ribose or deoxyribose sugar moiety is now termed a ________.
Fill in the blank(s) with the appropriate word(s).
nucleoside
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Which of the following is at the highest energy level?
A. A reaction center chlorophyll that has received the energy from a blue-light photon B. A reaction center chlorophyll that has received the energy from a red-light photon C. A reaction center chlorophyll that has received the energy from a green-light photon
When faced with a sudden drop in environmental temperature, an endothermic animal will ________.
A. experience a drop in its body temperature B. wait to see if it goes lower C. increase muscle activity to generate heat D. add fur or fat to increase insulation
What is a nerve?
A) a bundle of neurons B) a chain of neurons C) a sensory synapse D) a series of impulses
The presence of known carcinogens in ETS supports the argument that ETS can cause lung cancer in nonsmokers
Indicate whether the statement is true or false