If the Transition State of an Enzyme Catalyzed Reaction Contained

question 27

Multiple Choice

If the transition state of an enzyme catalyzed reaction contained a positive charge, which of the following amino acids would most likely be present in the active site to aid in transition state formation?

• A) Lys
• B) Val
• C) Asn
• D) Glu
• E) Cys

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Definitions:

Secondary Growth

This is the process in plants that results in the thickening of stems and roots, mainly due to the activity of the vascular cambium and cork cambium.

Xylem

The vascular tissue in plants responsible for the conduction of water and nutrients from the roots to other parts of the plant.

Palisade Mesophyll

A layer of closely packed photosynthetic cells under the epidermis in leaves, responsible for the absorption of light necessary for photosynthesis.

Spongy Mesophyll

A layer of loosely arranged cells in a plant leaf, facilitating gas exchange and containing chloroplasts for photosynthesis.