100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
AS Level Biology A H020/01 Breadth in biology Sample Question Paper £6.13   Add to cart

Exam (elaborations)

AS Level Biology A H020/01 Breadth in biology Sample Question Paper

 79 views  0 purchase

AS Level Biology A H020/01 Breadth in biology Sample Question Paper Date – Morning/Afternoon Version 2.0 Time allowed: 1 hour 30 minutes You may use: • a scientific or graphical calculator ** * 0 0 0 0 0 0 * First name Last name Centre number Candidate number INSTRUCTIONS • ...

[Show more]

Preview 4 out of 36  pages

  • May 19, 2021
  • 36
  • 2020/2021
  • Exam (elaborations)
  • Questions & answers
All documents for this subject (1)
avatar-seller
GradeProfessor
Oxford Cambridge and RSA

AS Level Biology A
H020/01 Breadth in biology
Sample Question Paper

Date – Morning/Afternoon Version 2.0
Time allowed: 1 hour 30 minutes


You may use:
• a scientific or graphical calculator
**




EN * 0 0 0 0 0 0 *
IM
First name
EC


Last name

Centre Candidate
number number
SP




INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Where appropriate, your answers should be supported with working. Marks may
be given for a correct method even if the answer is incorrect.
• Write your answer to each question in the space provided.
• Additional paper may be used if required but you must clearly show your candidate
number, centre number and question number(s).
• Do not write in the bar codes.

INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document consists of 24 pages.




© OCR 2016
[601/4261/3] DC (…) H020/01 Turn over

, 2

Section A

You should spend a maximum of 25 minutes on this section.

Answer all the questions.

1 Young mammals receive antibodies in their mother’s milk.

This is an example of which type of immunity?

A artificial active immunity

B artificial passive immunity

C natural active immunity

D natural passive immunity




2
Your answer

Which of the following descriptions is correct?
EN [1]
IM
A Vaccination gives long-term protection, immunisation gives short-term protection.
B Vaccination involves injection of antigenic material and immunisation is the process of
EC

developing immunity.
C Vaccination involves injection of antigenic material, immunisation is injection of antibodies.

D Vaccination and immunisation have the same meaning.
SP




Your answer [1]

3 When you listen to a human heartbeat through a stethoscope you can hear a two stage ‘lub–dub’
sound.

Which of the following causes the first ‘lub’ component?

A closing of the atrioventricular valves

B sound of blood rushing into the atria

C sound of blood rushing into the ventricles

D closing of semilunar valves


Your answer [1]



© OCR 2016 H020/01

, 3

4 Zinc ions are necessary for the enzyme carbonic anhydrase to work.

Which statement correctly describes the nature and function of zinc ions in their interaction with
carbonic anhydrase?

A inorganic ions and coenzymes

B vitamins and prosthetic groups

C inorganic ions and prosthetic groups

D vitamins and coenzymes

Your answer [1]

5 Using the light micrograph below and the formula
4
3
r 3 what is the volume of a neutrophil?



EN
IM
EC
SP




A 2 µm3

B 20 µm3

C 200 µm3

D 2000 µm3


Your answer [1]




© OCR 2016 H020/01 Turn over

, 4

6 Three types of microscope are listed below.

Select the row that shows the correct use for each type of microscope.

Type of microscope and what it is used to observe

Light microscope Transmission Laser scanning
electron microscope confocal microscope

an object at a certain
A cell surfaces organelles
depth within a cell

an object at a certain whole cells and
B cell surfaces
depth within a cell tissues

whole cells and
C organelles cell surfaces
tissues




EN
whole cells and an object at a certain
D organelles
tissues depth within a cell
IM
Your answer [1]
7 Cyanobacteria are photoautotrophs and fossil records confirm their existence 3.5 billion years ago.

Which row describes the structure of cyanobacteria?
EC


Feature
Nucleus Circular DNA Mitochondria Ribosomes Chloroplast Cell wall
A   
SP



B   

C   

D   



Your answer [1]

8 Fig. 8.1 shows an animal cell.




© OCR 2016 H020/01

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

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 GradeProfessor. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £6.13. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67474 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£6.13
  • (0)
  Add to cart