Biochemistry Practice Test 8

1. Which of the following is more commonly called phosphatidic acid?

L-glycerol 3-phosphate

L-glycerol 2-phosphate

Diacylglycerol 3-phosphate

Fatty acyl co-A

2. Phosphatidylserine is derived only from ___________

Phosphatidylethanolamine

CDP-diacylglycerol

Phosphatidyl choline

Phosphatidyl glycerol

3. Which of the following about Calvin cycle is correct?

Rubisco adds CO₂ to 3-phosphoglycerate

It is a metabolic pathway by which plants convert CO₂ into pentose sugars as the main product

It is a metabolic pathway by which plants convert CO₂ and water into carbohydrates

With decrease in light intensity, the enzymes are more reactive

4. Why light is required for light dependent reactions?

It is the source for electrons

It splits the water molecules

It splits ATP molecules which generates the energy necessary to power the light independent reactions

It energizes electrons in the reaction center

5. A chlorophyll-like accessory pigment lacking Mg⁺² is ____________

Plastocyanin

Ferredoxin

Cytochrome c

Pheophytin

6. Which of the following is the simplest hydrophilic moiety present in membrane lipids?

Phosphate group

Glucose

Hydroxyl group

Amino group

7. Light energy is converted to chemical energy in the presence of ____________

Stomata

Ribosomes

Chloroplast

Mitochondria

8. Photosynthesis can be described as ____________

Oxidative, anabolic, endergonic process

Reductive, anabolic, endergonic process

Oxidative, catabolic, exergonic process

Reductive, anabolic, exergonic process

9. A water-soluble protein that carries one electron present in the chloroplast is ____________

Plastocyanin

PQ_B

Cytochrome c

10. Dinitrogenase is a ____________

Dimer

Trimer

Tetramer

Monomer