You Are Evaluating Novel Varieties of C₃ Rice That Express

question 174

Multiple Choice

You are evaluating novel varieties of C₃ rice that express PEP carboxylase and rubisco in both mesophyll and bundle-sheath cells for a project to develop rice plants that are capable of C₄ photosynthesis. Your MOST promising candidates are those for which the enzyme levels of:

• A)both enzymes are higher in bundle-sheath cells than in mesophyll cells.
• B)PEP carboxylase levels are higher in mesophyll cells than in bundle-sheath cells.
• C)rubisco levels are lower in bundle-sheath cells than in mesophyll cells.
• D)both enzymes are highly expressed in both cell types.

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Definitions:

Electrical Stimulation

The application of electrical impulses to nerves or muscles to evoke a response, often used in medical treatment and research.

Computerised Tomography

A medical imaging technique that uses computer-processed combinations of multiple X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object, allowing the user to see inside the object without cutting.

Positron Emission Tomography

A nuclear medicine functional imaging technique used to observe metabolic processes in the body as an aid to the diagnosis of disease.

Electrical Stimulation

A therapeutic method or research tool that applies electrical currents through electrodes to stimulate nerves, muscles, or brain areas for various purposes.