Other
Practice past paper questions for Topic: Photosynthesis
- Course
- Institution
**AQA Exam questions for photosynthesis inc mark scheme** **B R AN D N E W**
[Show more]
Seller
Follow
JamesSpencer
Reviews received
Content preview
Photosynthesis booklet revision questions NAME:Q1.
A student investigated the effect of different wavelengths of light on the rate of
photosynthesis. She used the apparatus shown in Figure 1.
Figure 1
(a) What measurements should the student have taken to determine the rate of
photosynthesis?
___________________________________________________________________
___________________________________________________________________
(1)
(b) Other than temperature and pH, give two factors which should be kept constant
during this investigation.
1. _________________________________________________________________
2. _________________________________________________________________
(2)
(c) The student did not use a buffer to maintain the pH of the solution.
Explain what would happen to the pH of the solution during this investigation.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(2)
Page 1 of 24
, (d) Figure 2 shows the student’s results.
Figure 2
Suggest and explain why the rate of photosynthesis was low between 525 nm and
575 nm wavelengths of light.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
________________________________________________________________ (2)
(Total 7 marks)
Q2.
The diagram shows the light-dependent reactions of photosynthesis.
Page 2 of 24
, (a) In which part of a chloroplast do the light-dependent reactions occur?
________________________________________________________________ (1)
(b) Name the substances in boxes A, B and C.
A ________________________________
B _______________ + _______________
C ________________________________ (3)
(c) Use information in the diagram to explain
(i) the role of chlorophyll in photolysis;
______________________________________________________________
______________________________________________________________
______________________________________________________________
____________________________________________________________ (3)
(ii) how the energy of light is converted into chemical energy in the
light-dependent reactions.
______________________________________________________________
______________________________________________________________
______________________________________________________________
____________________________________________________________ (3)
(d) In an investigation, single-celled algae were kept in bright light and were supplied
with carbon dioxide containing radioactive carbon atoms. After 300 seconds, the
carbon dioxide supply was turned off. The graph shows how the concentrations of
carbon dioxide, glycerate 3-phosphate (GP) and ribulose bisphosphate (RuBP)
changed.
Page 3 of 24
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller JamesSpencer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.58. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77973 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now