A Scientist Is Researching the Germination Rates of Different Arabidopsis

question 48

Multiple Choice

A scientist is researching the germination rates of different Arabidopsis thaliana mutants. The seeds from one of her mutants always fails to germinate, even if she exposes them to red light. In these plants, what might the mutation affect?

• A)The mutation increases the conversion of P_r to P_fr.
• B)The mutation inhibits the conversion of P_r to P_fr.
• C)The mutation inhibits the conversion of P_fr to P_r.
• D)None of the other answer options is correct.

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Definitions:

Alarm

Alarm is a sudden fear or distressing suspense caused by an awareness of danger; it is a signal or warning of a potential threat.

Brainstem

The part of the brain that connects the cerebrum with the spinal cord and controls vital functions such as breathing, heart rate, and blood pressure.

Breathing

The physiological process of inhaling oxygen and exhaling carbon dioxide, crucial for respiratory gas exchange.

Heart Rates

The number of heartbeats per unit of time, typically expressed in beats per minute (bpm), indicating heart activity.