Complete the following statement: oxygen is a reactant of while being the product for
(1) photosynthesis, (2) fermentation
(1) cellular respiration, (2) photosynthesis
(1) fermentation, (2) anaerobic respiration
(1) aerobic respiration, (2) photosynthesis

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above