If Organisms A,B,and C Belong to the Same Class but to Different

question 66

Multiple Choice

If organisms A,B,and C belong to the same class but to different orders,and if organisms D,E,and F belong to the same order but to different families,which of the following pairs of organisms would be expected to show the greatest degree of structural homology?

• A)A and B
• B)A and C
• C)B and D
• D)D and F

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Definitions:

Thylakoid Compartment

A structure within chloroplasts of plant cells that contains the machinery for photosynthesis.

Chlorophyll A

A key photosynthetic pigment found in plants, algae, and cyanobacteria, responsible for the green color and vital for capturing light energy to produce food.

Light-Dependent Reactions

Series of biochemical processes in photosynthesis that require light to produce ATP and NADPH, occurring in the thylakoid membranes of chloroplasts.

ATP

Adenosine Triphosphate is a high-energy molecule found in every cell. Its job is to store and supply the cell with needed energy.