BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs. Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms.

Detailed explanation-2: -Animal cells do not contain organelles that can harness natural energy like solar energy and convert simple compounds into complex ones, like chloroplasts in plants. Chloroplasts can absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food.

Detailed explanation-3: -Animals cannot make their own food so they must eat plants and/or other animals. They are called consumers. There are three groups of consumers. Animals that eat only plants are called herbivores (or primary consumers).

Detailed explanation-4: -An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers.