Answer the following statements true (T) or false (F)

1. Most biologists would agree that the most important metabolic pathway of living organisms is photosynthesis.

2. The rise of photosynthetic organisms increased the concentration of CO2 in the atmosphere.
3. Grana, thylakoids, and chloroplasts are cellular structures important to the process of photosynthesis.
4. The primary photosynthetic pigment, chlorophyll a, reflects most orange light that reaches it.
5. The light reactions use ATP as their energy source.


1.TRUE
This is because more than 99% of organisms, in most habitats on Earth, rely on the carbon fixation in photosynthesis.
2.FALSE
Photosynthesis would include carbon fixation as part of the carbon reactions.
3.TRUE
These structures are specialized around the membranes and proteins that conduct light and dark reactions.
4.FALSE
The primary pigment is present in largest amounts in the leaves, giving their typical colored appearance.
5.FALSE
The energy source and the major output molecule of the light reactions should be discerned.

Biology & Microbiology

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