What term describes avoidance of reproduction without giving up sexual intercourse?
A. asexual reproduction
B. contraception
C. abstinence
D. the rhythm method
Answer: B
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What term describes avoidance of reproduction without giving up sexual intercourse?
A. abstinence B. the rhythm method C. asexual reproduction D. contraception
Describe the action of the stomata to regulate water loss in a plant
What will be an ideal response?
The brain knows how strong a stimulus is because the brain interprets ____
a. the neurotransmitter levels the stimulus is producing b. variations in the frequency of action potentials c. the size variation in the action potential being propagated d. the number of ion channels in the plasma membrane of the sensory neuron e. the extent to which voltage gated ion channels open and close
As electrons pass from photosystem II to photosystem I, they return to a lower energy level,
1.releasing free energy which is all lost as heat. 2.used to pump protons across the thylakoid membrane. 3.used to synthesize NADPH. 4.used to split water and release oxygen. 5.re-emitted as light.