Exam (elaborations)
ocr AS Level Biology B (H022-01) Question Paper May2024.
- Course
- Institution
ocr AS Level Biology B (H022-01) Question Paper May2024.
[Show more]
Content preview
ocrMonday 13 May 2024 – Morning
AS Level Biology B (Advancing Biology)
H022/01 Foundations of biology
Time allowed: 1 hour 30 minutes
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
INSTRUCTIONS
Last name
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
Turn over
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer for each question in the box provided.
1 Which statement about the fatty acids found in lipids is correct?
A They contain only carbon and hydrogen atoms.
B One fatty acid joins with three glycerol molecules to form a triglyceride.
C Saturated fatty acids contain C=C double bonds.
D The ‘tails’ of fatty acids are hydrophobic.
Your answer [1]
2 A group of students were testing plant extracts for biological molecules.
The table shows the colour of each solution before and after testing the extracts.
Colour of Benedict’s Colour of biuret Colour of iodine /
Extract solution reagent KI solution
Before After Before After Before After
A Blue Blue Blue Blue Yellow Blue-black
B Blue Green Blue Blue Yellow Blue-black
C Blue Orange Blue Blue Yellow Yellow
D Blue Orange Blue Violet Yellow Yellow
Which of the plant extracts contained both glucose and amylose but did not contain any protein?
Your answer [1]
approved
, 3
3 Which statement about water is not correct?
A A large amount of heat energy is required to change the temperature of water.
B The forces of attraction between water molecules are hydrogen bonds.
C Water can dissolve ionic compounds.
D Water is a non-polar molecule.
Your answer [1]
4 A person weighing 75 kg contains 45 dm3 of body fluid.
Approximately 70% of this body fluid is contained within cells as intracellular fluid.
Researchers investigating the effects of water content on cell metabolism concluded that
metabolic activity is significantly inhibited when ~20% of its intracellular fluid has been lost.
Which option shows the volume of intracellular fluid at which metabolic activity of cells in this
person would be significantly inhibited?
A 6.3 dm3
B 9.0 dm3
C 25.2 dm3
D 31.5 dm3
Your answer [1]
approved 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 richardkasnia. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now