1. A hypothesis and a theory are related because
A.a Theory is always used to develop a hypothesis
B.They are both developed in the absence of observations.
C. the data collected when a hypothesis is tested can support a theory.
D. an experiment is done before the formation of both a hypothesis and a theory.*****
2.which word describes the energy in an exergonic reaction?
A. created
B. relased****?
C.absorbed
D. destroyed
3. whcich describes the progress of photosynthesis?
A. carbon dioxide + water ->glucose + oxygen
B.glucose+oxygen ->carbon dioxide+ water
C.water+oxygen -> glucose+carbon dioxide****?
D. glocose+ carbon dioxide-> water+ oxygen
4.The role of an enzyme in a chemical reaction is to change which of the following?
A. the type of rection
B. the activation energy of the reaction
C. the pH at which the reaction occurs***?
D. the temperature at which the reaction occurs
9 answers
2. Correct
3. Incorrect
4. Incorrect
3. Plants do use water, but they don't take oxygen, they use something else. Try again.
4. An enzyme in a chemical reaction doesn't change the pH, it changes something else. Try again.