Question

Choose three characteristics of chloroplasts from the following list.

Select one or more:

The stroma of the chloroplast is analogous to the matrix of mitochondria.

The Calvin Cycle reactions only take place in the dark.

Plastoquinone is a mobile electron carrier in the thylakoid membrane.

The thylakoid lumen has a higher pH relative to the stroma.

The dark reactions of photosynthesis take place in the thylakoid lumen.

The F1 subunit of the chloroplast ATP synthase is oriented toward the thylakoid lumen.

A proton gradient is established across the thylakoid membrane.

Answer 1

Characteristics of chloroplasts:

1. The stroma of the chloroplast is analogous to the matrix of mitochondria.

2. Plastoquinone is a mobile electron carrier in the thylakoid membrane.

3.The F1 subunit of the chloroplast ATP synthase is oriented toward the thylakoid lumen.

4. A proton gradient is established across the thylakoid membrane.

Following statement are incorrect :

1.The Calvin Cycle reactions only take place in the dark is incorrect as calvin cycle occurs only in the presence of light.

2. The thylakoid lumen has a higher pH relative to the stroma is an incorrect statement because thylakoid lumen has a lower pH relatively to stroma.

3.The dark reactions of photosynthesis take place in the thylakoid lumen is a wrong statement because it occurs in the stroma of the chloroplast.