Test
GCSE BIOLOGY QUIZ - B1 YOU AND YOUR GENES
Preguntas del test (60)
1The nucleus contains your genetic material
- AVerdadero
- BFalso
2How many chromosomes does the human cell nucleus contain?
- A23
- B23 pairs
3What do chromosomes carry?
- AThe nucleus
- BGenes
- CProteins
4A gene is a short length of a chromosome which is one molecule of DNA.
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5The DNA is coiled up to form the arms of the chromosome
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6What are alleles?
- ADifferent versions of the same gene
- BIdentical versions of the same gene
- CIdentical versions of different genes
7Each gene is a code for making a certain protein
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8Having different versions of proteins means that we end up with...
- AIdentical characteristics
- BDifferent characteristics
9What are the different types of proteins?
- AStructural proteins
- BEnzymes
- CAlleles
10What does an enzyme do?
- ACopy the cells in a gene
- BContains genetic material
- CControl all the chemical reactions in an organism
11Chromosomes come in pairs because we have two parents
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12The sex cells (the sperm and the egg) are different from ordinary body cells because they contain 23 pairs of chromosomes
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13What happens to the chromosomes when the sperm fertilises the egg?
- AHalf of the chromosomes in the egg combine with half of the chromosomes in the sperm
- BThe chromosomes in the sperm combine with the chromosomes in the egg
14The fertilised egg has 23 single chromosomes
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15The two chromosomes in a pair always carry the same genes
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16What does homozygous mean?
- AYou have two alleles the same for that particular gene
- BYou have two different alleles for that particular gene
17What is heterozygous?
- AYou have two different alleles for that particular gene
- BYou have two alleles the same for that particular gene
18Alleles that produce dominant characteristics are always shown with...
- AA small letter
- BA capital letter
19Alleles that produce recessive characteristics are always shown with...
- AA capital letter
- BA small letter
20All men have an X and a Y chromosome
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21All women have two Y chromosomes
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22What is the chance of having a boy or a girl?
- A50:50. There is an equal chance
- B70:30
- CIt is always more likely to have a boy because of their Y chromosome
23The gene that makes an embryo into a male causes a protein called...
- ANeuroplastin
- BTestis determining factor (TDF)
- CGlycosyltransferases
24The gene 'Testis determining factor (TDF)' causes the development of ovaries
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25Which of these are lifestyle factors than can affect your health?
- ASmoking
- BEating junk food
- CYour genes
- DExercise
26Clones are genetically identical organisms
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27Clones...
- AHave different alleles but the same genes
- BHave the same genes and the same alleles
- CCan differ due to differences in their environment (e.g. the amount of food available)
28Some organisms reproduce asexually (without sexual reproduction). This means that there is only one parent, and the offspring are genetically the same as each other and the parent.
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29Most bacteria reproduce asexually by dividing into two, and multiplying very quickly.
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30Plants cannot reproduce asexually
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31Identical twins are also clones.
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32How are identical twins made?
- AThe embryo splits into four and they are all genetically identical
- BThe embryo splits into two, and two separate embryos begin to develop. (They are genetically identical).
33Scientists can make clones in the lab
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34Clones are made in the lab by removing the nucleus of an egg cell to form an enucleated cell, this leaves the egg without any genetic information. A nucleus from an adult donor cell is inserted in its place. The cell is then stimulated so that it starts dividing as if it was a normal embryo (fertilised egg). The embryo produced is genetically identical to the donor cell.
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35Genetic disorders are caused by faulty alleles
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36What are the symptoms of Cystic Fibrosis?
- AThick, sticky mucus in the air passages, gut and pancreas
- BShaking, erratic body movements
- CMental deterioration
37Cystic fibrosis is caused by a dominant allele
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38Cystic Fibrosis is a genetic disorder of the...
- AHeart
- BLungs
- CCell membranes
- DCytoplasm
39For a child to have a chance of inheriting Cystic Fibrosis, ___________ of the parents must be either carriers of sufferers.
- Anone
- Bboth
- Cone
40Cystic Fibrosis... The baby will be normal if they have...
- AFF alleles
- BFf alleles
- Cff alleles
41Huntington's Disorder is caused by a recessive allele
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42Huntington's Disorder makes the body produce thick, sticky mucus in the air passages, gut and pancreas.
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43There is no cure for Huntington's Disorder
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44A "carrier" of Huntington's Disorder will be a sufferer
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45The symptoms of Huntington's Disorder appear around the age of 15
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46IVF = in vitro fertilisation
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47Doctors produce more embryos than they need during IVF. The embryos are screened and only healthy ones are chosen to be implanted into the mother's womb.
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48What is it called when doctors test fetuses in the womb by testing the fluid surrounding the fetus?
- AIVF
- BAmniocentesis
- CThat is not possible
49Testing embryos for genetic disorders is known as...
- APre-implantation genetic diagnosis
- BDifferentiation
- CAmniocentesis
50Adults can be checked to see if they carry alleles for genetic disorders
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51What are the issues surrounding genetic testing?
- ANo genetic tests are 100% accurate. There are always some errors due to things like samples getting contaminated or misinterpretation.
- BTests carried out during pregnancy aren't 100% safe
- CGenetic testing can only take place after birth
- DYou're not allowed to have children after being tested
- EInsurance companies might refuse to give life insurance to people with the "wrong" alleles
- FIf the information becomes available to others, this might cause discrimination
52Gene therapy may soon make it possible to treat or prevent genetic disorders
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53What could be the problems of gene therapy?
- ASome people have concerns about 'playing God'
- BGene therapies carry risks. There are concerns that they could even cause cancers instead of preventing them.
- CThere isn't any problems with gene therapy
54Stem cells are unspecialised
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55Differentiation is the process by which a cell changes to become specialised for its job.
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56Stem cells are found in early human embryos
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57People with some blood diseases can be treated by bone marrow transplants. Bone marrow contains stem cells that can turn into new blood cells to replace the faulty old ones.
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58No research is allowed on embryos older than...
- AA week
- B14 days
- CA month
- DA year
59Scientists can extract stem cells from very early human embryos and grow them
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60How many genes determine which sex organs you develop?
- A1
- B2
- C3
- D4
- E8
Información
- Descripción
- Test sobre GCSE BIOLOGY QUIZ - B1 YOU AND YOUR GENES, creado por iona.19 el 25/02/2015.
- Autor
- iona.19
- Idioma
- English
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