Advanced Subsidiary
PAPER 2: Core Physiology and Ecology
Pearson Edexcel GCE Biology B Advanced Subsidiary PAPER 2: Core Physiology and Ecology QP
MAY 2024
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
•• Answer
centre number and candidate number.
all questions.
Answer the questions in the spaces provided –
there may be more space than you need.
Information
•• The total mark for this paper is 80.
The marks for each question are shown in brackets
• Inanswer
– use this as a guide as to how much time to spend on each question.
question(s) marked with an asterisk (*), marks will be awarded for your ability to structure your
logically, showing how the points that you make are related or follow from each other where
appropriate.
Advice
• Read
• Try
each question carefully before you start to answer it.
to answer every question.
• your answers if you have time at the end.
Check
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 A problem that has developed in recent years is the emergence of bacteria that are resistant to
some antibiotics.
(a) (i) Which of the following will lead to fewer resistant bacteria?
(1)
A antibiotics being given to farm animals to prevent disease
B doctors only prescribing antibiotics that are effective against the
pathogen
C doctors only prescribing antibiotics for viral infections
D patients stopping taking the antibiotics when they feel better
(ii) Which of the following would cause an increase in resistant bacteria?
DO NOT WRITE IN THIS AREA
(1)
A antibiotic use leads to increased competition between bacteria
B the antibiotic reducing the frequency of mutations in the bacteria
C the resistant bacteria being killed by the antibiotic
D the resistant bacteria surviving the antibiotic
DO NOT WRITE IN THIS AREA
2
■■■■
, (b) The bacteria referred to as MRSA are resistant to many antibiotics.
The graph shows the number of cases of MRSA in several US states from 2005 to
DO NOT WRITE IN THIS AREA
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 papersbybree. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
