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MARK SCHEME for AQA GCSE BIOLOGY GRADE 7-9 QUESTION PACK (Paper 1) $3.86   Add to cart

Exam (elaborations)

MARK SCHEME for AQA GCSE BIOLOGY GRADE 7-9 QUESTION PACK (Paper 1)

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This document contains a set of challenging GCSE Biology Paper 1 questions designed for Grade 9 students. It focuses on key topics from the specification, including cell biology, organization, infection and response, and bioenergetics. The questions are structured to test higher-order thinking skil...

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  • November 11, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • 1
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MARK SCHEME
BIOLOGY P1 EDITION




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Get your green pens ready-
this will be a rough one...

, 1. CELL BIOLOGY
1A. (2 MARKS)
PROKARYOTIC CELLS DO NOT HAVE A
NUCLEUS, WHEREAS EUKARYOTIC CELLS




ES
DO. (1)
PROKARYOTIC CELLS ARE GENERALLY
SMALLER THAN EUKARYOTIC CELLS. (1)




CH
1B. (3 MARKS)
USE THE FORMULA: ACTUAL SIZE =
IMAGE SIZE / MAGNIFICATION (1)
CALCULATION: 60 MM ÷ 200 = 0.3 MM
EA
(1)
CONVERT TO MICROMETERS: 0.3 MM =
300 ΜM (1)
YT

1C. (4 MARKS)
CORRECTLY PLOTS A GRAPH WITH
STAGES OF MITOSIS ON THE X-AXIS
AND NUMBER OF CELLS ON THE Y-AXIS.
JO



(1)
CORRECT LABELING OF EACH STAGE.
(1)
MOST CELLS ARE IN INTERPHASE,
INDICATING IT IS THE LONGEST STAGE.
(1)
EXPLAINS THAT INTERPHASE IS WHEN
THE CELL GROWS AND PREPARES FOR
DIVISION. (1)

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