Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
AS
BIOLOGY
Paper 2
Friday 24 May 2019 Morning Time allowed: 1 hour 30 minutes
Materials
For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Questio Mark
a scientific calculator. n
1
Instructions 2
Use black ink or black ball-point pen.
3
Fill in the boxes at the top of this page.
Answer all questions. 4
You must answer the questions in the spaces provided. Do 5
not write outside the box around each page or on blank 6
pages.
7
Show all your working.
Do all rough work in this book. Cross through any work you do 8
not want to be marked. 9
TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 75.
7401/2
, 2
Do not write
outside the
There are no questions on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02
IB/M/
* Jun19/7401/2
, 3
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 .1 Describe the role of enzymes in the digestion of proteins in a
mammal. [4 marks]
[Extra space]
Question 1 continues on the next page
Turn over ►
*03
IB/M/
* Jun19/7401/2
, 4
Do not write
outside the
Scientists investigated how the diet of rabbits affected their digestion and box
absorption of protein. The scientists fed rabbits an identical mass of food
but varied the percentage of protein in the food.
The scientists measured the mean mass of protein fed to the rabbits that
was absorbed, which they then expressed as a percentage value.
The scientists’ results are shown in
Figure 1. The error bars show ± 2
standard deviations.
± 2 standard deviations cover 95% of the data.
*04
IB/M/
* Jun19/7401/2
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
AS
BIOLOGY
Paper 2
Friday 24 May 2019 Morning Time allowed: 1 hour 30 minutes
Materials
For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Questio Mark
a scientific calculator. n
1
Instructions 2
Use black ink or black ball-point pen.
3
Fill in the boxes at the top of this page.
Answer all questions. 4
You must answer the questions in the spaces provided. Do 5
not write outside the box around each page or on blank 6
pages.
7
Show all your working.
Do all rough work in this book. Cross through any work you do 8
not want to be marked. 9
TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 75.
7401/2
, 2
Do not write
outside the
There are no questions on this page box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
*02
IB/M/
* Jun19/7401/2
, 3
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 .1 Describe the role of enzymes in the digestion of proteins in a
mammal. [4 marks]
[Extra space]
Question 1 continues on the next page
Turn over ►
*03
IB/M/
* Jun19/7401/2
, 4
Do not write
outside the
Scientists investigated how the diet of rabbits affected their digestion and box
absorption of protein. The scientists fed rabbits an identical mass of food
but varied the percentage of protein in the food.
The scientists measured the mean mass of protein fed to the rabbits that
was absorbed, which they then expressed as a percentage value.
The scientists’ results are shown in
Figure 1. The error bars show ± 2
standard deviations.
± 2 standard deviations cover 95% of the data.
*04
IB/M/
* Jun19/7401/2
