Which Experimental Modification Would Most Effectively Help to Determine the Sequence

question 23

Multiple Choice

Which experimental modification would most effectively help to determine the sequence of reactions and reaction intermediates in the Calvin cycle?

• A)Exposing the cells to ¹⁴CO₂ for various time intervals
• B)Exposing the cells to alternating periods of light and darkness
• C)Exposing the cells to radiolabeled O₂ instead of ¹⁴CO₂
• D)Varying the amount of water the cells are exposed to

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Definitions:

Meristematic Tissue

Plant tissue found in regions of growth, made up of actively dividing cells that give rise to various organs of the plant.

Bud Scales

Protective structures that cover the developing buds of many plants, shielding them from environmental stresses such as cold temperatures.

Guttation

The exudation of drops of water from the tips or edges of leaves, resulting from root pressure in certain plants.

Transpiration

The process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.