QQuestionBiology
QuestionBiology
Select the descriptions that apply to the thylakoid.
- [ ] The thylakoid membrane is the site of the light-independent reactions of photosynthesis.
- [ ] The thylakoid membrane is the site of the light-dependent reactions of photosynthesis.
- [ ] Thylakoids are arranged within the chloroplast into numerous membrane folds called cristae.
- [ ] The thylakoid membrane is the site of an electron transport chain that generates cellular energy from biochemical energy.
- [ ] The thylakoid membrane is the site of an electron transport chain that generates cellular energy from light energy.
- [ ] Thylakoids are arranged within the chloroplast into stacks of coin-shaped discs called grana.
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Step 1:: Identify the functions of the thylakoid membrane in photosynthesis.
The thylakoid membrane is the site of the light-dependent reactions of photosynthesis. This is where light energy is converted into biochemical energy in the form of ATP and NADPH.
Step 2:: Identify the structure of thylakoids in chloroplasts.
Thylakoids are arranged within the chloroplast into stacks of coin-shaped discs called grana. They are also arranged into numerous membrane folds called cristae.
Step 3:: Identify the electron transport chain in the thylakoid membrane.
The thylakoid membrane is the site of an electron transport chain that generates cellular energy from light energy. This electron transport chain is a series of complexes that transfer electrons from water to NADP+, using light energy to pump hydrogen ions across the membrane, creating a concentration gradient. The flow of hydrogen ions down this gradient drives the synthesis of ATP.
Final Answer
- The thylakoid membrane is the site of the light-dependent reactions of photosynthesis. - Thylakoids are arranged within the chloroplast into stacks of coin-shaped discs called grana. - Thylakoids are arranged within the chloroplast into numerous membrane folds called cristae. - The thylakoid membrane is the site of an electron transport chain that generates cellular energy from light energy.
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