F4 Biology Test 6:
Cell cycle and division
A. Multiple
Choice(10marks)
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Q.
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Answer
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A
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C
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B
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C
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C
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B
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D
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B
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D
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A/C
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Wrong no.
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B Conventional questions
1 a Homologous
chromosomes line up randomly along the equator and the members of each
homologous pair then
separate independently of the other pairs of chromosomes. 1
This produces different
combinations of paternal chromosomes and maternal chromosomes
in the gametes. 1
b 1´4
2 a Meiotic
cell division 1
The amount of DNA
in the cell is halved after cell division. 1
Con / Exp: DNA in the cell decreasing (X) [Amounts
of DNA in mitosis also decrease]
The
organism reproduces asexually / by mitotic cell division. 1
Exp: Singular / Double X è odd / even
number
3 a All correct 3
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R
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®
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T
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®
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P
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®
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U
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®
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S
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Q
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b Synthesis of new
organelles / mitochondria / endoplasmic reticulum / proteins 1 Cell growth 1
c Sister chromatids of each
chromosome 1
are pulled to opposite
poles by the contraction of spindle fibres. 1
d New liver cells are
needed for the growth of the liver. 1
New liver cells are needed
for replacing worn-out cells or repairing damaged tissues. 1
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