Biology Bioenergetics ETEA 2023 Retake
PMDC Verified Question 40 of 67
The carotenoids absorb light in the visible spectrum between _ and wavelengths.
A
400-600nm
B
630-700nm
C
500-600nm
D
400-500nm
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: 500-600nm
Concept:

Accessory pigments like carotenoids absorb wavelengths of light that chlorophyll cannot efficiently capture, broadening the plant's action spectrum.

Solution:

  • Carotenoids are yellow, orange, and red pigments.
  • They primarily absorb light in the blue-green range of the spectrum.
  • Based on the specific data from the curriculum notes, this blue-green absorption strongly occurs in the 500-600 nm range.


Why other options are incorrect:

  • 630-700 nm is the red range, which is strongly absorbed by chlorophyll, not carotenoids. (Note: The source document provides options C and D as identical 500-600nm, which corresponds to the correct range).

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Bioenergetics MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App