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IMPAQ. Life science term 1 test R80,00
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  3. 12th Grade
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  5. Life Sciences

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IMPAQ. Life science term 1 test
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The test has covers : DNA:The Code of Life • Meiosis • Reproduction in Vertebrates • Human Reproduction. The memo is included. All the best with your studies (＾▽＾)

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  • May 31, 2023
  • 11
  • 2022/2023
  • Exam (elaborations)
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Test 2023
G12 ~ Life Sciences



TASK 2: Test 1

LIFE SCIENCES
GRADE 12
TASK 2: TEST 1

EXAMINER: S. van Onselen TIME: 50 min.
MODERATOR: K. Humphries TOTAL: 50

INSTRUCTIONS

1. This paper consists of TWO sections and FOUR questions.
2. Read through the whole paper before you start.
3. Answer all the questions.
4. Number your answers as indicated.
5. Write neatly and legibly.
6. Rule off after each question.
7. Start each question on a new page.
8. Only use a blue ballpoint pen.
9. Draw a clear line through any work that should not be marked.
10. The diagrams in this paper are not necessarily drawn to scale.




Page 1 of 7 © Impaq

, Test 2023
G12 ~ Life Sciences



SECTION A

QUESTION 1

Multiple-choice questions. Four options are provided as possible answers to the
questions. Choose the correct answer and only write the letter (A–D) next to the question
number (1.1.1–1.1.3), e.g. 1.1.4 E.

Question 1.1.1 and 1.1.2 is based on the diagrams of human gametes.




(Source: DBE Life Sciences P1, November 2021)


1.1.1 Which of the labels is correct?

A A – Diploid nucleus
B E – Acrosome
C F – Cytoplasm
D D – Chorion

1.1.2 Part A and F fuse to form a zygote with 47 chromosomes and an extra
chromosome on chromosome pair 21.

Which statement(s) is/are correct?

i. It is known as Down’s syndrome or trisomy 21
ii. It is caused by non-disjunction during Anaphase 1 or 2
iii. Each somatic cell will have 47 chromosomes
iv. There is an extra gonosome

A i, ii and iii
B ii, iii and iv
C i, ii and iv
D i, ii, iii and iv




Page 2 of 7 © Impaq

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