Nuclear division test2

Answer all the questions: Use a text book to help you

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1: What is the name of this complete picture of the chromsomses in a normal body cell?: complete set
homologous pairs
karyotype
autosomes
chromatids
centromere
2: What are the non-sex chromsomes called?: karyotype
sister chromatids
paternal
maternal
autosomes
haploid
3: This picture shows a sperm cell fertilizing an egg cell. What is the number of chromsomes in the fertilised zygote?: n
haploid
3n
23
genes
2n
4: What is a length of DNA which codes for a protein called?: locus
gene
centromere
sister chromatids
allele
interphase
5: Look at this picture of a chromosome. What is happening in the image?: The sister chromatids are joining together
The sister chromatids are separating
The genetic material is replicating
The chromosome is moving towards the cell equator
The sister chromatids are entering prophase
The two chromatids are a homologous pair
6: What is the name of the region which joins the sister chromatids?: centriole
chromosome
chromatid
centromere
autosome
spindle
7: When a cell divides to form two new cells, the new cells are referred to as...: daughter cells
sister cells
zygotes
gametes
paternal cells
homologous cells
8: What do the bands on this chromosome represent?: centromeres
centrioles
alleles
genes
chromatids
pairs
9: What are different forms of the same gene called?: loci
locus
allele
haploid
autosome
carcinogen
10: Which two chromosome forms a homologous pair?: AB
AD
BC
BD
CD
11: Which letter represents the prophase of nuclear division?: A
B
C
D
12: Which letter shows metaphase: A
B
C
D
13: Which letter in this image shows a cell in interphase?: A
B
C
D
E
F
14: Cell A has just entered telophase. What could be happening?: The nuclear membrane has broken down
The spindle is forming
The nuclear membranes are forming
The centrioles are replicating
The DNA is replicating
The chromosomes are becoming visible
15: At what stage do the centrioles replicate?: Prophase
Metaphase
Anaphase
Telophase
Interphase
16: Cell B is in metaphase. What would you expect to see happening?: The chromosomes line up along the equator of the cell
The cell membrane constricts
The spindle breaks down
The nuclear membrane is forming
The centrioles replicate
The DNA is replicating
17: What can you say about 1 and 2 in this image?: They are homologous pairs?
They contain similar genetic material
They are identical
One is larger than the other
One has come from the male parent
They are daughter chromatids
18: What is cytokinesis?: The cell membrane breaks down
The nuclear membrane breaks down
The constriction of the cytoplasm
The replication of the DNA
When the sister chromatids separate during anaphase
When a gene mutates
19: Which of these is not a result of mitosis: Enables organisms to grow by cell division
A form of asexual reproduction
The formation of gametes
Placement and repair of damaged cells
20: A substance which causes cancer: hydrocarbon
carcinogen
mutation
tumour
halogen
oncogene
21: What is a gene which causes cancer?: allele
autosome
mutagen
carcinogen
trigger gene
oncogene
22: This describes a cancer which does not spread from its position: tumour
malignant
benign
mutagen
primary growth
retinoblastoma
23: Which one is not a cause of mutation?: simple covalent compounds
ionising radiation
carcinogenic chemicals
hereditary predisposition
viral infections
UV light
24: What proportion of men die from cancer in Britain each year?: 1 in 5
1 in 13
1 in 17
1 in 27
1 in 100
1 in 324
25: What term is used for an irregular mass of cells which is dividing repeatedly: blastocyst
blastosphere
fibrinogen
tumour
cyst