Question

heterotrophs and autotrophs
for questions 13–17, write true if the statement is true. if the statement is false, change the underlined word or words to make the statement true.

1. all heterotrophs must eat food to get energy.
2. autotrophs do not need to eat food because they make food.
3. the energy in food originally came from atp. the sun
4. the term photosynthesis means “putting together with light” in greek.
5. the energy of sunlight is stored in the chemical bonds of carbohydrates.
6. complete the table comparing two types of organisms.

autotrophs and heterotrophs
type description examples
autotrophs
heterotrophs
apply the big idea

1. suppose that you ate a hamburger on a wheat roll with lettuce, tomatoes, and onions for lunch. as you ate, you took in food molecules from plants and animals. explain why all the energy in the food molecules of this hamburger could be traced back to the sun.

Explanation:

1. Heterotrophs cannot produce their own food and rely on consuming other organisms for energy, so they must eat food.
2. Autotrophs, like plants, use photosynthesis to make their own food and don't need to consume pre - made food.
3. The energy in food originally comes from the Sun. Through photosynthesis, plants capture solar energy and convert it into chemical energy in food. ATP is an energy - carrying molecule, not the original source of food energy.
4. Photosynthesis means "putting together with light" in Greek, not "pulling apart with light".
5. During photosynthesis, the energy of sunlight is used to make carbohydrates, and the energy is stored in the chemical bonds of these carbohydrates.

For the table:

• Autotrophs: Description - Organisms that can make their own food using sunlight, carbon dioxide, and water through photosynthesis. Examples - Plants, algae, some bacteria.
• Heterotrophs: Description - Organisms that cannot make their own food and must consume other organisms for energy. Examples - Humans, animals, fungi.

For question 19: The plants in the hamburger (lettuce, tomatoes, onions) used photosynthesis to convert sunlight into energy - rich molecules. The cow that provided the meat ate plants, transferring the solar energy to its body. So when you eat the hamburger, you are consuming energy that originally came from the Sun.

Answer:

1. True
2. True
3. False, change "ATP" to "the Sun"
4. False, change "pulling apart" to "putting together"
5. True

18.

Type	Description	Examples
Heterotrophs	Organisms that cannot make their own food and must consume other organisms for energy	Humans, animals, fungi

1. The plants in the hamburger used photosynthesis to convert sunlight into energy - rich molecules. The cow ate plants, transferring the solar energy to its body. So the energy in the hamburger can be traced back to the Sun.