What Is the Mechanism of Action by Which the Herbicide

question 42

Multiple Choice

What is the mechanism of action by which the herbicide paraquat kills plants?

• A)It competes with ferredoxin for electrons from the PSI reaction center.
• B)It interferes with PSI function.
• C)Electrons attached to paraquat are used to reduce oxygen, generating highly reactive oxygen radicals.
• D)It leads to the production of substances that damage the chloroplasts and kill the plant.
• E)All of these are correct.

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Definitions:

High-Pitched Murmurs

Sounds during the heartbeat cycle made by turbulent blood in or near the heart, often indicative of various types of heart conditions.

Bowel Sounds

The noises made by the movement of the gastrointestinal tract as it propels contents through the gut, used to assess intestinal activity.

Tympanic Membranes

Thin layers of tissue that separate the outer ear from the inner ear, also known as eardrums, which vibrate in response to sound waves.

Auricle Upward

Movement or orientation of the ear or external part of the ear upwards.