Exam (elaborations)
OCR A LEVEL JUNE 2022 BIOLOGY B PAPER 3 QUESTION PAPER
- Course
- Institution
OCR A LEVEL JUNE 2022 BIOLOGY B PAPER 3 QUESTION PAPER
[Show more]
Seller
Follow
Revisionbae
Reviews received
Content preview
OCR A LEVEL 2022PAPERS AND
MARKSCHEMES
tyrionpapers.com for
2023 stuff and
predicted papers
tyrionlay@gmail.com
Turn over next page. documents starts =>
, 2
Answer all the questions.
1 (a) Fig. 1.1 shows a light micrograph of pancreatic tissue.
X
Y
Z
×360
Fig. 1.1
(i) State one function of the cell labelled X.
...................................................................................................................................... [1]
(ii) Name the two different types of cell in the region labelled Y.
...................................................................................................................................... [1]
(iii) The diameter of one region of pancreatic tissue is represented by the line Z.
Calculate the actual diameter of the region labelled Z.
Give your answer in µm and to 3 significant figures.
Actual diameter = .................................................... µm [2]
© OCR 2022
tyrionpapers.com
, 3
(iv) A stage micrometer can be used when measuring the linear dimensions of cells, such
as those of the pancreatic tissue, viewed under a light microscope.
Outline how a stage micrometer is used to measure the linear dimensions of cells.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...................................................................................................................................... [2]
(b) The pancreas has an essential role in controlling blood glucose concentration.
A person was given a glucose tolerance test. Two months later, the same person was given
a fasting blood glucose test. The table shows the results of the two tests.
Glucose tolerance test Fasting blood glucose test
Blood glucose
concentration 2 hours
10.7 7.0
after the beginning of the
test (mmol dm–3)
Suggest what conclusions can be made from the results of the two tests.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [2]
© OCR 2022
tyrionpapers.com Turn over
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 Revisionbae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now