Photosynthesis

Which of the following is NOT found in the overall reaction for photosynthesis?

• nitrogen

• carbon dioxide

• water

• light

Plants get the energy they need for photosynthesis by absorbing

• chlorophyll a

• chlorophyll b

• sunlight

• high-energy sugars

Photosynthesis uses sunlight to convert water and carbon dioxide into

• high-energy sugars and proteins

• oxygen and high-energy sugars

• oxygen and carbon

• ATP and oxygen

Organisms, such as plants, that make their own food are called

• pigments

• thylakoids

• autotrophs

• heterotrophs

Organisms that CANNOT make their own food and must obtain energy from external sources are called

• autotrophs

• heterotrophs

• thylakoids

• plants

Most plants appear green because chlorophyll

• absorbs green light

• absorbs violet light

• does NOT absorb green light

• does NOT absorb violet light

Plants gather energy with light-absorbing molecules called

• pigments

• thylakoids

• chloroplasts

• glucose

Which of the following organisms is a heterotroph?

• mushroom

• alga

• wheat

• sunflower

Which of the following organisms makes its own food using light energy from the sun?

• mushroom

• oak

• leopard

• amoeba

What happens when chlorophyll is struck by sunlight?

• The electrons in the chlorophyll molecule become energized.

• The chlorophyll molecule is broken into two parts.

• A chemical reaction turns chlorophyll into high energy carbohydrates.

• Energy from fat molecules is released.