Q: Where does oxygen enter the blood? Choices: - in the heart - in the veins - in the liver - in the lungs A:
in the lungs
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Q: What can all living things sense and respond to in their environment? Choices: - sunlight - warmth - wind - stimuli A:
stimuli
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Q: Reproduction in prokaryotic cells is by what process of growth, enlargement and division? Choices: - mitosis - budding - photosynthesis - binary fission A:
binary fission
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Q: What do you call the electrons in the outermost energy level of an atom? Choices: - Inner electrons - shell electrons - Proper electrons - valence electrons A:
valence electrons
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