Question

the glucose used for cellular respiration in animals (like humans) comes from (1 point)
food we eat
plants creating it through photosynthesis
sunlight as a source of its energy
all of these answers are correct (though some are far removed)

Explanation:

Animals (including humans) are heterotrophs. They cannot produce glucose on their own. They obtain glucose by consuming food. The food contains carbohydrates which are broken down into glucose during digestion. While plants create glucose through photosynthesis (and if animals eat plants, the glucose in plants is the source in an indirect way), the most direct source for the glucose used in cellular respiration in animals is the food they eat. Sunlight is not a direct source of glucose for animals - it is used by plants in photosynthesis. Since not all options are correct (for example, sunlight is not a direct source of glucose for animal cellular respiration in the sense of being the molecule used in the process), the “all of these” option is incorrect.

Answer:

Food we eat