Several students were talking about which came first in the history of the Earth.Which student has the best understanding of what happened?
A) Photosynthetic producers must have come first to provide food for other organisms.
B) Anaerobic bacteria must have come first because there was no carbon dioxide in the atmosphere.
C) Photosynthetic producers must have come first to provide oxygen for other organisms.
D) Anaerobic organisms must have come first because there was no oxygen in the atmosphere.
Correct Answer:
Verified
Q7: Humans are both _.
A)heterotrophs and consumers
B)heterotrophs and
Q16: Where in the cell does glycolysis occur?
A)cytoplasm
B)endoplasmic
Q17: Plants use photosynthesis to
A)store chemical energy,and they
Q18: What compound directly provides energy for cellular
Q20: Photosynthetic organisms like grass are able to
Q22: Some friends are trying to make wine
Q23: A product of glycolysis is _.
A)lactic acid
B)ethyl
Q24: The second stage of aerobic respiration is
Q28: Electron transport takes place in the _.
A)mitochondria
B)chloroplasts
C)cytoplasm
D)ribosomes
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