Oxford Cambridge and RSA
Examinations Higher
GCSEBiology B Twenty First
Century ScienceJ257/01:
Breadth in Biology (Foundation
Tier) General Certificate of
Secondary Education (Attached
marking scheme)
, Oxford Cambridge and RSA
Tuesday 16 May 2023 – Morning
GCSE (9–1) Biology B
(Twenty First Century Science)
J257/01 Breadth in biology (Foundation Tier)
Time allowed: 1 hour 45 minutes
F
* 9 9 2 7 2 5 7 1 1 5 *
You must have:
• a ruler (cm/mm)
You can use:
• an HB pencil
• a scientific or graphical calculator
* J 2 5 7 0 1 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
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 90.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2023 [601/8506/5] OCR is an exempt Charity
DC (PQ/JG) 329296/3 Turn over
, 2
BLANK PAGE
PLEASE DO NOT WRITE ON THIS PAGE
© OCR 2023
, 3
1 (a) Write these structures in order of size.
Cell Chromosome Gene Nucleotide Nucleus
Smallest .....................................
.....................................
.....................................
.....................................
Largest ..................................... [4]
(b) The table shows the number of chromosomes that different animals have in each body cell.
Animal Number of chromosomes in each body cell
Earthworm 36
Giant panda 42
Gorilla 48
Fly 8
Cat 38
Polar bear 74
Rat 42
Snail 24
Tiger 38
A student looks at the data and writes this conclusion:
"The larger the animal, the more chromosomes it has in each body cell."
Explain why the student is not correct.
Use two pieces of evidence from the table to support your answer.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [2]
© OCR 2023 Turn over
Examinations Higher
GCSEBiology B Twenty First
Century ScienceJ257/01:
Breadth in Biology (Foundation
Tier) General Certificate of
Secondary Education (Attached
marking scheme)
, Oxford Cambridge and RSA
Tuesday 16 May 2023 – Morning
GCSE (9–1) Biology B
(Twenty First Century Science)
J257/01 Breadth in biology (Foundation Tier)
Time allowed: 1 hour 45 minutes
F
* 9 9 2 7 2 5 7 1 1 5 *
You must have:
• a ruler (cm/mm)
You can use:
• an HB pencil
• a scientific or graphical calculator
* J 2 5 7 0 1 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
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 90.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2023 [601/8506/5] OCR is an exempt Charity
DC (PQ/JG) 329296/3 Turn over
, 2
BLANK PAGE
PLEASE DO NOT WRITE ON THIS PAGE
© OCR 2023
, 3
1 (a) Write these structures in order of size.
Cell Chromosome Gene Nucleotide Nucleus
Smallest .....................................
.....................................
.....................................
.....................................
Largest ..................................... [4]
(b) The table shows the number of chromosomes that different animals have in each body cell.
Animal Number of chromosomes in each body cell
Earthworm 36
Giant panda 42
Gorilla 48
Fly 8
Cat 38
Polar bear 74
Rat 42
Snail 24
Tiger 38
A student looks at the data and writes this conclusion:
"The larger the animal, the more chromosomes it has in each body cell."
Explain why the student is not correct.
Use two pieces of evidence from the table to support your answer.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [2]
© OCR 2023 Turn over
