Macromolecules and Photosynthesis

__________ is a molecule that absorbs and reflects light energy.

• Chloroplast

• Chlorophyll

• Leaf Cells

• Grana

Tags

NGSS.MS-LS1-6

Photosynthesis captures energy from sunlight to make ______.

• Gas

• Oxygen

• Sugars

• Water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

During a biology class, Anika and William were discussing the primary pigment involved in photosynthesis. What is the primary pigment involved in photosynthesis?

• Chlorophyll

• Carotene

• Xanthophyll

• Anthocyanin

Answer explanation

Chlorophyll is the primary pigment involved in photosynthesis, responsible for capturing light energy and converting it into chemical energy.

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DOK Level 1: Recall

During a biology class, Emma asked, 'Which organelle is responsible for photosynthesis in plant cells?'

• Mitochondria

• Chloroplast

• Nucleus

• Ribosome

Answer explanation

The organelle responsible for photosynthesis in plant cells is the Chloroplast.

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DOK Level 1: Recall

Design an experiment to test the effect of light intensity on the rate of photosynthesis in plants.

• Measure the growth of plants in different soil types.

• Use a light meter to measure light intensity and count oxygen bubbles produced by aquatic plants.

• Compare the color of leaves in different light conditions.

• Measure the temperature of plants under different light sources.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

During a biology class, Samuel explained that the two main stages of photosynthesis are (a)   and Calvin Cycle (Light-independent reactions)

• Glycolysis

• Light-dependent reactions

• Electron Transport Chain

• Fermentation

Answer explanation

The two main stages of photosynthesis are Light-dependent reactions and Calvin Cycle (Light-independent reactions).

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DOK Level 1: Recall

During a science experiment, Sophia and Elijah observed a plant. Which gas did they find to be a by-product of photosynthesis?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Methane

Answer explanation

Oxygen is the byproduct of photosynthesis, produced when plants convert carbon dioxide into glucose during the process.

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DOK Level 1: Recall

Match the following processes with their purposes in photosynthesis.

• Carbon fixation

• To break down water

• Calvin Cycle

• To generate ATP and NADPH

• Photolysis

• To produce glucose

• Light-dependent reactions

• To fix carbon dioxide

Answer explanation

The main purpose of the light-dependent reactions in photosynthesis is to generate ATP and NADPH.

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DOK Level 2: Skill/Concept

Abigail and Zoe are studying photosynthesis in their biology class. Explain the role of water in the light-dependent reactions of photosynthesis.

• It provides electrons and protons and releases oxygen as a by-product.

• It acts as a solvent for glucose.

• It is used to transport nutrients.

• It is not involved in the light-dependent reactions.

Answer explanation

Water provides electrons and protons, and releases oxygen as a byproduct in the light-dependent reactions of photosynthesis.

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DOK Level 2: Skill/Concept

is the process where Benjamin and Arjun learned how plants use energy from the ​ to convert water and ​ into ​ with oxygen as a waste product.​

• Photosynthesis

• sun

• carbon dioxide

• glucose

• Respiration

Answer explanation

Photosynthesis is the correct choice because it is the process where plants use energy from the sun to convert water and carbon dioxide into glucose with oxygen as a waste product.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3