Photosynthesis

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?

• CO₂ and glucose
• ATP and NADPH
• ADP, P and NADP+
• H₂Oand O₂

Where does the Calvin cycle take place?

• Stroma
• thylakoid
• thylakoid space
• matrix

When oxygen is released as a result of photosynthesis, it is a direct by-product of____

• reducing NADP+
• splitting water molecules
• chemiosmosis
• electron transfer in photosystem 1

What is the main role of the pigment molecules in a light-harvesting complex in the thylakoid membranes?

• split water and release oxygen to te reaction-center chloropyll
• transfer light energy to the reaction-center chlorophyll
• synthesize ATP
• transfer electrons to NADPH

Tags

NGSS.HS-LS1-5

In chemiosimosis in mitochondria, protons flow from the intermembrane space into the matrix, whearas in chemiosimosis in chloroplast, protons flow from __________

• the thylakoid space to the stoma
• the stoma to the thylakoid space
• the matrix into the stoma
• the stoma into the cytosol

The color of light least effective in driving photosynthesis is _________

• blue
• red
• orange
• green

Tags

NGSS.HS-LS1-5

Cyclic electron flow in the cloroplast produces________

• ATP
• NADPH
• both ATP and NADPH
• glucose

Tags

NGSS.HS-LS1-5

Why are C₄ plants able to photosynthesize with no apparent photorespiration?

• they do not participate in the Calvin cycle
• they use PEP carboxylase to initially fix carbon dioxide
• they conserve water more efficiently
• they exclude oxygen from their tissues

T or F: CAM plants  keep their stomates closed in daytime and fix carbon dioxide during the night , thus reducing loss of water.

• True
• False

T or F: The light reactions of Photosynthesis requires ATP.

• True
• False

Tags

NGSS.HS-LS1-5