What happens during photosynthesis?

a. autotrophs consume carbohydrates.

b. heterotrophs consume atp.

c. heterotrophs produce atp.

d. autotrophs produce carbohydrates

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these