if carbon dioxide and water were abundantly available to a heterotrophic prokaryotic cell, would it be possible for the cell to use them as a food source?
sunlight would be needed for the reaction to occur, so they would not be a food source.
neither carbon dioxide nor water contains energy the cell could use, so they would not be a food source.
since carbon dioxide and water are used to make glucose, they could be used as a food source.
anything that contains carbon is an organic molecule, so the carbon dioxide could be a food source.

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.