Question

In photosynthetic cyanobacteria that grow in long chains, some cells differentiate into heterocysts that specialize in nitrogen fixation which requires a microenvironment with low oxygen. Heterocysts do not make glucose, but instead exchange nutrients with their neighbors. Which of the following components of the electron transport chain is able to be degraded in heterocysts?

1) Photosystem I
2) Photosystem II
3) Cytochrome b6f complex
4) ATP synthase

Answer 1

The Cytochrome b6f complex is the component of the electron transport chain that can be degraded in heterocysts of photosynthetic cyanobacteria.

Step-by-step explanation:

In photosynthetic cyanobacteria, heterocysts differentiate to specialize in nitrogen fixation. Heterocysts do not produce glucose, but exchange nutrients with their neighboring cells. The component of the electron transport chain that can be degraded in heterocysts is the Cytochrome b6f complex.