Quiz
AQA GCSE Biology Unit 2.5
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Perguntas do quiz (20)
1Which type of cell division produces cells with the diploid (2n) number of chromosomes?
- AMeiosis
- BMitosis
2Which type of cell division produces cells with the haploid (n) number of chromosomes?
- AMeiosis
- BMitosis
3Which type of cell division produces somatic (body) cells?
- AMeiosis
- BMitosis
4Which type of cell division produces gametes?
- AMeiosis
- BMitosis
5Which type of cell division is used in asexual reproduction and leads to no genetic variation?
- AMeiosis
- BMitosis
6Which type of cell division is used in sexual reproduction and leads to genetic variation?
- AMeiosis
- BMitosis
7True or false? In order to undergo cell division, the chromosomes in the cell need to be copied.
- AVerdadeiro
- BFalso
8Where would you find totipotent, undifferentiated stem cells?
- AIn zygotes and embryos
- BIn the microvilli in the small intestine
- CIn bone marrow
- DIn the tips of shoots and roots
- EIn the parietal lobe of the brain
9Why do gametes (sperm and ova) have a haploid (n) number of chromosomes?
- AThey are too small to carry the diploid (2n) number of chromosomes
- BWhen they fuse in fertilisation, the resulting zygote has the correct diploid (2n) number of chromosomes
- CHalf of the chromosomes are missed out as the gamete is a short-lived cell
10True or false? Research on embryo stem cells is not considered unethical as the embryo is not yet alive.
- AVerdadeiro
- BFalso
11True or false? In 2010, the first organ grown using stem cells was successfully transplanted into a human child.
- AVerdadeiro
- BFalso
12Which scientist came up with the idea of genes but was ignored for many years as DNA had yet to be discovered?
- ACrick and Watson
- BMendel
- CDarwin
- DLamarck
13What does a codon (a sequence of three nucleotide bases) code for?
- ANothing
- BA molecule of glucose
- CAn amino acid
14What is the best definition of a recessive allele?
- AAn allele that is "masked" by the effect of a dominant allele
- BAn allele that is rarely passed down
- CAn allele that causes learning difficulties
15What would be the genotype of a person who was homozygous dominant for brown eyes?
- ABB
- BBb
- Cbb
16True or false? A person's phenotype is the combination of alleles that they have.
- AVerdadeiro
- BFalso
17What is a Punnet square?
- AA square number that is 1 less than a prime number, discovered by J W Punnet
- BA biological phenomenon exhibited by ravens which causes them to fly in a square formation
- CA grid which shows all possible combinations of alleles and the corresponding phenotype expressed
18Which of these diseases are caused by dominant alleles?
- ASickle cell anaemia
- BHuntington's disease
- CCystic fibrosis
- DPolydactyly
19True or false? Cystic fibrosis causes mucus to become thick and sticky, often leading to problems with breathing, digestion and fertility.
- AVerdadeiro
- BFalso
20True or false? A carrier of cystic fibrosis will have the heterozygous genotype Cc.
- AVerdadeiro
- BFalso
Informações
- Descrição
- Twenty questions for the fifth section in Unit 2 of AQA GCSE Biology: Simple inheritance in plants and animals.
- Autor
- Matthew T
- Idioma
- English
- Visualizações
- 442
- Histórico
- Criado em 5 mai 2014 · atualizado em 30 jan 2017
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