Molecule Lesson on Cellular Respiration and Photosynthesis

Why are photosynthesis and cellular respiration often considered opposites?

• Photosynthesis produces twice as many ATP molecules as cellular respiration does.

• Water is released during photosynthesis and consumed during cellular respiration

• Photosynthesis occurs during the day, and cellular respiration occurs at night.

• Oxygen is produced during photosynthesis and used during cellular respiration.

Tags

NGSS.HS-LS2-5

Where do the dark reactions of photosynthesis take place within the chloroplast?

• Stroma

• Stomata

• Chlorophyll

• Thylakoid Membrane

The compound synthesized during photosynthesis is —

• H₂O

• C₆H₁₂O₆

• CO₂

• _O₂

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

In the process of photosynthesis, which pigment has the largest role?

• chlorophyll

• melanin

• carotene

• hemoglobin

Tags

NGSS.HS-LS1-5

The first stage of photosynthesis in a chloroplast is

• light-dependent.

• temperature-dependent.

• glucose-driven.

• ATP-driven

Tags

NGSS.HS-LS1-5

Which statement best describes the relationship between the products of photosynthesis and the reactants in cellular respiration?

• The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy.

• The products of photosynthesis combine with the reactants in cellular respiration to remove ATP from cells.

• The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light.

• The products of photosynthesis change the structure of the reactants in cellular respiration in the presence of light.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Photosynthesis and cellular respiration both involve the use and release of gases. Which statement correctly identifies the role of gases in the two processes?

• Photosynthesis and cellular respiration both use carbon dioxide and release oxygen.

• Photosynthesis and cellular respiration both use oxygen and release carbon dioxide.

• Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.

• Cellular respiration uses carbon dioxide and releases oxygen, while photosynthesis uses oxygen and releases carbon dioxide.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

What is the purpose of ATP in both cellular respiration and photosynthesis?

• To breakdown glucose to release energy

• To work as an enzyme

• To absorb electrons from water

• To transfer energy from one molecule to another

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Many plants that grow on land store energy in the form of starch. When the plants need energy, the molecules of starch can be broken down into monosaccharides. What type of biomolecule is starch?

• Protein

• Carbohydrate

• Lipid

• Enzyme

During photosynthesis hydrogen combines with carbon dioxide to make —

• cholesterol

• protein

• glucose

• cellulose

Tags

NGSS.HS-LS1-5