The Distinctive Feature of Chloroplasts Is That They Contain a Green

question 18

Multiple Choice

The distinctive feature of chloroplasts is that they contain a green pigment called:

• A)Gram stain.
• B)chlorophyll.
• C)hemoglobin.
• D)chromatin.

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Definitions:

Chemical Shifts

Changes in the resonance frequency of nuclei in a magnetic field, providing information about the electronic environment in NMR spectroscopy.

Carbonyl Group

A group in chemistry where a carbon atom forms a double bond with an oxygen atom, denoted as C=O.

δ 3.1

A notation indicating a chemical shift of 3.1 in nuclear magnetic resonance (NMR) spectroscopy, often signifying the environment of a hydrogen atom in a molecule.

δ 4.2

A chemical shift value in nuclear magnetic resonance (NMR) spectroscopy indicating the resonance position of certain hydrogen atoms in a molecule relative to a standard reference.