The dark reaction in photosynthesis where sugars are synthesized are called?

Correct answer: B. Calvin Cycle

  • A. Krebs cycle
  • B. Calvin Cycle
  • C. Galvin cycle
  • D. Glycolysis

Explanation

The dark reaction in photosynthesis, where sugars are synthesized, is known as the Calvin Cycle or the light-independent reactions. Despite the name "dark reaction," the Calvin Cycle does not require direct light; however, it relies on the products of the light-dependent reactions. During the Calvin Cycle, carbon dioxide is fixed and reduced to produce carbohydrates, particularly glucose. The key steps of the Calvin Cycle include carbon fixation, reduction, regeneration of the starting molecule, and the eventual synthesis of sugars. This process takes place in the stroma of chloroplasts, and it utilizes the ATP and NADPH produced during the light-dependent reactions to drive the chemical reactions leading to the formation of glucose and other organic molecules.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Bioenergetics

Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.

Practise Bioenergetics

1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Biology questions like this

Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

More Bioenergetics questions