Photosynthesis
d. plants
c. all organisms in the jungle
a. has increased.
b. has decreased.
c. has not changed.
d. is not related to the number of energy storage molecules.
a. has increased.
An ivy plant has been taking in carbon from the air for several hours. Is the ivy in sunlight? What has happened to the number of energy storage molecules in the ivy? The ivy . . .
b. is in sunlight. The number of energy storage molecules in the ivy has increased.
Scientists are studying photosynthesis in a desert ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the desert carry out photosynthesis?
a. plants
Scientists are studying cellular respiration in a river ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the river carry out cellular respiration?
c. all organisms in the river
d. Carbon is moving into the air and out of the air at the same time.
Reza has a glass ball filled with water that contains tiny plants and shrimp that eat those plants. No material can get in or out, but light can get through the glass when it is placed in sunlight. The number of energy storage molecules in the plants and shrimp started out high, but then the glass ball was moved, and the number of energy storage molecules decreased. Was the glass ball moved into the light or into the dark? What happened to the amount of carbon in the water?
b. The glass ball was moved into the dark, and there is more carbon in the water.
a. take in carbon from the air. The carbon is used to make energy storage molecules.
b. give off carbon to the air. Giving off carbon allows the sea grass to make energy storage molecules.
a. take in carbon from the air. The carbon is used to make energy storage molecules.
a. has not changed.
b. is not related to the number of energy storage molecules.
c. has increased.
d. has decreased.
d. has decreased.
a. The aquarium is now in sunlight, and there are more energy storage molecules in the plants and fish.
b. The aquarium is now in sunlight, and there are fewer energy storage molecules in the plants and fish.
a. The aquarium is now in sunlight, and there are more energy storage molecules in the plants and fish.
A scientist set up an experimental ecosystem in a sealed room with no windows. The experimental ecosystem has plants and animals that eat those plants. The scientist can control whether the room is light or dark with a light switch outside the room. The amount of carbon in the air of the ecosystem started out low. Then the amount of carbon in the air started to increase. Is the increase because the scientist switched the light on or because she switched the light off? What happened to the number of energy storage molecules in the living things? The scientist . . .
a. switched the light off, and the number of energy storage molecules in the living things decreased.
b. switched the light off, and the number of energy storage molecules in the living things increased.
c. switched the light on, and the number of energy storage molecules in the living things increased.
d. switched the light on, and the number of energy storage molecules in the living things decreased.
a. switched the light off, and the number of energy storage molecules in the living things decreased.
a. give off carbon to the air. Giving off carbon allows them to make energy storage molecules.
b. give off carbon to the air. Giving off carbon uses up energy storage molecules.
c. take in carbon from the air. The carbon is used to make energy storage molecules.
d. take in carbon from the air. The carbon is used to break down energy storage molecules.
c. take in carbon from the air. The carbon is used to make energy storage molecules.
c. Carbon is moving into and out of the living things at the same time.
a. The aquarium has been covered so no light gets in, and there is more carbon in the water.
b. The aquarium has been in sunlight, and there is less carbon in the water.
b. The aquarium has been in sunlight, and there is less carbon in the water.
This space station has plants growing inside it, and astronauts who eat the fruits and vegetables from those plants. Because it is in space, the station is sealed so no material can get in or out. The space station is in Earth’s shadow, so no light is getting into it. The sensors in the space station show that carbon dioxide in the air is increasing. What is happening to the energy storage molecules in the plants and humans in the space station?
a. They are increasing
b. They are decreasing
c. They are staying the same
b. They are decreasing
b. is in sunlight, and the number of energy storage molecules in the kelp has increased.
c. is not in sunlight, and the number of energy storage molecules in the kelp has decreased.
b. is in sunlight, and the number of energy storage molecules in the kelp has increased.
b. Carbon is moving into the air and out of the air at the same time.
A group of giraffes feeds on leaves and grasses during the daytime. Right now, it's the middle of the night. The sun is not shining and the giraffes are not eating. Is carbon moving into the living things, moving out of the living things, or both?
c. Carbon is only moving out of the living things; it is not moving into them.
A scientist is studying an aquarium ecosystem that contains water, plants, and fish that eat those plants. The aquarium has glass walls so light can get in, but it is sealed so no material can move into or out of the tank. When the scientist turned the aquarium's light on, carbon in the water started decreasing. What is happening to the amount of carbon in the living things inside the aquarium?
a. It is increasing
b. It is decreasing
c. It is staying the same
a. It is increasing