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OCR Higher GCSE Combined Science B Twenty First Century Science J260_05: Biology (Higher Tier) question-paper june 2024 £13.14   Add to cart

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OCR Higher GCSE Combined Science B Twenty First Century Science J260_05: Biology (Higher Tier) question-paper june 2024

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OCR Higher GCSE Combined Science B Twenty First Century Science J260_05: Biology (Higher Tier) question-paper june 2024

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  • November 1, 2024
  • 27
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
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Oxford Cambridge and RSA
*1378767410*
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INSTRUCTIONS
· 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 95.
· The marks for each question are shown in brackets [ ].
· Quality of extended response will be assessed in questions marked with an asterisk (*).
· This document has 28 pages.
ADVICE
· Read each question carefully before you start your answer.
You must have:
· a ruler (cm/mm)
You can use:
· a scientific or graphical calculator
· an HB pencil
Friday 10 May 2024 · Morning
GCSE (9·1) Combined Science B
(Twenty First Century Science)
J260/05 Biology (Higher Tier)
Time allowed: 1 hour 45 minutes
© OCR 2024 [601/8690/2]
DC (DE/CT) 343563/5

, 2
1 Charlie knows that hormones are important in human reproduction.

(a) Describe one role of hormones in human reproduction.

..................................................................................................................................................... [1]

(b)
(i) The diagram shows four stages in the menstrual cycle.

Stage 1
Menstruation

Stage 4 Stage 2
Ovum dies if not fertilised Uterus lining thickens

Stage 3
Ovulation


Charlie has a contraceptive implant under their skin. The implant releases hormones.

Complete the sentence to explain why the hormones released by the implant disrupt the
menstrual cycle.

Put a ring around the correct option.

The hormones prevent stage / from taking place. [1]




© OCR 2024

, 3
(ii) A clinical trial compared the contraceptive implant with a condom.

The trial compared:

• the risk of becoming pregnant
• the risk of catching a sexually transmitted disease.

12

10

8

Risk (%) 6

4

2

0
Risk of becoming Risk of catching a sexually
pregnant transmitted disease

Key
Contraceptive implant Condom

Charlie looks at the chart and decides to use a condom instead of the contraceptive implant.

Evaluate Charlie’s decision, using the information from the chart.

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..................................................................................................................................................... [2]

(iii) Suggest why the risk of becoming pregnant and the risk of catching a sexually transmitted
disease are equal when using a condom.

..........................................................................................................................................................

..................................................................................................................................................... [1]




© OCR 2024 Turn over

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