Photosynthesis and Cellular Respiration

Which process is represented by the arrow in the diagram?

• Growth

• Regulation

• Respiration

• Photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Plant cells contain a green pigment called chlorophyll. Chlorophyll has a role in the process of photosynthesis. What does chlorophyll do?

• Chlorophyll produces glucose from oxygen.

• Chlorophyll produces oxygen from glucose.

• Chlorophyll absorbs light energy from the sun.

• Chlorophyll absorbs glucose from the storage in the plant.

Tags

NGSS.MS-LS1-6

When sunlight strikes a plant, the leaves capture most of that energy to use for photosynthesis. The image shows the process of photosynthesis in action. How do plants obtain the water and carbon dioxide they use for this process?

• Carbon dioxide is absorbed from oxygen and water is taken in by the stems.

• Water enters through the roots and carbon dioxide enters through the leaves.

• Water enters as rain falls on the stems and carbon dioxide is absorbed from fertilizer.

• Carbon dioxide is absorbed through the roots and the leaves absorb water from the air.

Tags

NGSS.MS-LS1-6

When sunlight strikes a plant, the leaves capture most of that energy to use for photosynthesis. The image shows the process of photosynthesis in action. Which of these materials helps plants use energy from sunlight?

• Chlorophyll

• Glucose

• Roots

• Soil

Tags

NGSS.MS-LS1-6

How do organisms get the energy they need?

• Plants produce their own energy through photosynthesis, and animals get energy from eating other organisms.

• Plants do not require energy because they do not move, and animals get energy by performing exercise.

• Plants get energy from glucose produced in the soil, and animals get energy directly from sunlight.

• Plants get energy from fertilizers, and animals get energy by drinking water.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

During cellular respiration, organisms covert different kinds of food into glucose. Cells then break down the glucose to provide energy for life activities. Which of these substances is also produced during cellular respiration?

• Carbon dioxide

• Fat

• Oxygen

• Protein

Tags

NGSS.MS-LS1-7

Kristine goes to her neighborhood health club to exercise. The process of cellular respiration makes it possible for Kristine to run on the treadmill and to lift weights. What do her cells do during cellular respiration?

• Convert kinetic energy into chemical energy.

• Absorbs light energy through the chlorophyll in their chloroplasts.

• Break down food molecules to release energy.

• Combine water and carbon dioxide to produce.

Tags

NGSS.MS-LS1-7

Plants provide the materials that animals use in cellular respiration, and animals provide the materials needed by plants for photosynthesis. According to this diagram, which of these materials does cellular respiration provide that plants use in photosynthesis?

• Energy

• Carbon dioxide

• Chloroplasts

• Mitochondria

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Plants provide the materials that animals use in cellular respiration, and animals provide the materials needed by plants for photosynthesis. What products of photosynthesis are starting material for cellular respiration?

• Glucose and oxygen

• Heat and energy

• Carbon dioxide and water

• Light energy and chlorophyll

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Scientists believe that during its early formation, Earth's atmosphere contained little, it any oxygen. Fossil and rock records suggest that by about two billion years ago, Earth's atmosphere was oxygen rich and that organisms with complex cells existed. Many scientists think that these organisms released oxygen, changing the composition of Earth's atmosphere. Which process is the most scientifically plausible explanation for how the organisms released oxygen into Earth's atmosphere?

• The cells produced sugar and oxygen during photosynthesis.

• The cells gave off oxygen during cell division as they rapidly reproduced.

• The cells broke down carbon dioxide to carbon and oxygen to obtain energy.

• The cells combined nitrogen and hydrogen atoms by nuclear fusion to produce oxygen.

Tags

NGSS.MS-LS1-6