2126912
Questão 1
Questão
The nucleus contains your genetic material
Responda
- True
- False
Questão 2
Questão
How many chromosomes does the human cell nucleus contain?
Responda
-
23
-
23 pairs
Questão 3
Questão
What do chromosomes carry?
Responda
-
The nucleus
-
Genes
-
Proteins
Questão 4
Questão
A gene is a short length of a chromosome which is one molecule of DNA.
Responda
- True
- False
Questão 5
Questão
The DNA is coiled up to form the arms of the chromosome
Responda
- True
- False
Questão 6
Questão
What are alleles?
Responda
-
Different versions of the same gene
-
Identical versions of the same gene
-
Identical versions of different genes
Questão 7
Questão
Each gene is a code for making a certain protein
Responda
- True
- False
Questão 8
Questão
Having different versions of proteins means that we end up with...
Responda
-
Identical characteristics
-
Different characteristics
Questão 9
Questão
What are the different types of proteins?
Responda
-
Structural proteins
-
Enzymes
-
Alleles
Questão 10
Questão
What does an enzyme do?
Responda
-
Copy the cells in a gene
-
Contains genetic material
-
Control all the chemical reactions in an organism
Questão 11
Questão
Chromosomes come in pairs because we have two parents
Responda
- True
- False
Questão 12
Questão
The sex cells (the sperm and the egg) are different from ordinary body cells because they contain 23 pairs of chromosomes
Responda
- True
- False
Questão 13
Questão
What happens to the chromosomes when the sperm fertilises the egg?
Responda
-
Half of the chromosomes in the egg combine with half of the chromosomes in the sperm
-
The chromosomes in the sperm combine with the chromosomes in the egg
Questão 14
Questão
The fertilised egg has 23 single chromosomes
Responda
- True
- False
Questão 15
Questão
The two chromosomes in a pair always carry the same genes
Responda
- True
- False
Questão 16
Questão
What does homozygous mean?
Responda
-
You have two alleles the same for that particular gene
-
You have two different alleles for that particular gene
Questão 17
Questão
What is heterozygous?
Responda
-
You have two different alleles for that particular gene
-
You have two alleles the same for that particular gene
Questão 18
Questão
Alleles that produce dominant characteristics are always shown with...
Responda
-
A small letter
-
A capital letter
Questão 19
Questão
Alleles that produce recessive characteristics are always shown with...
Responda
-
A capital letter
-
A small letter
Questão 20
Questão
All men have an X and a Y chromosome
Responda
- True
- False
Questão 21
Questão
All women have two Y chromosomes
Responda
- True
- False
Questão 22
Questão
What is the chance of having a boy or a girl?
Responda
-
50:50. There is an equal chance
-
70:30
-
It is always more likely to have a boy because of their Y chromosome
Questão 23
Questão
The gene that makes an embryo into a male causes a protein called...
Responda
-
Neuroplastin
-
Testis determining factor (TDF)
-
Glycosyltransferases
Questão 24
Questão
The gene 'Testis determining factor (TDF)' causes the development of ovaries
Responda
- True
- False
Questão 25
Questão
Which of these are lifestyle factors than can affect your health?
Responda
-
Smoking
-
Eating junk food
-
Your genes
-
Exercise
Questão 26
Questão
Clones are genetically identical organisms
Responda
- True
- False
Questão 27
Questão
Clones...
Responda
-
Have different alleles but the same genes
-
Have the same genes and the same alleles
-
Can differ due to differences in their environment (e.g. the amount of food available)
Questão 28
Questão
Some 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.
Responda
- True
- False
Questão 29
Questão
Most bacteria reproduce asexually by dividing into two, and multiplying very quickly.
Responda
- True
- False
Questão 30
Questão
Plants cannot reproduce asexually
Responda
- True
- False
Questão 31
Questão
Identical twins are also clones.
Responda
- True
- False
Questão 32
Questão
How are identical twins made?
Responda
-
The embryo splits into four and they are all genetically identical
-
The embryo splits into two, and two separate embryos begin to develop. (They are genetically identical).
Questão 33
Questão
Scientists can make clones in the lab
Responda
- True
- False
Questão 34
Questão
Clones 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.
Responda
- True
- False
Questão 35
Questão
Genetic disorders are caused by faulty alleles
Responda
- True
- False
Questão 36
Questão
What are the symptoms of Cystic Fibrosis?
Responda
-
Thick, sticky mucus in the air passages, gut and pancreas
-
Shaking, erratic body movements
-
Mental deterioration
Questão 37
Questão
Cystic fibrosis is caused by a dominant allele
Responda
- True
- False
Questão 38
Questão
Cystic Fibrosis is a genetic disorder of the...
Responda
-
Heart
-
Lungs
-
Cell membranes
-
Cytoplasm
Questão 39
Questão
For a child to have a chance of inheriting Cystic Fibrosis, ___________ of the parents must be either carriers of sufferers.
Responda
-
none
-
both
-
one
Questão 40
Questão
Cystic Fibrosis... The baby will be normal if they have...
Responda
-
FF alleles
-
Ff alleles
-
ff alleles
Questão 41
Questão
Huntington's Disorder is caused by a recessive allele
Responda
- True
- False
Questão 42
Questão
Huntington's Disorder makes the body produce thick, sticky mucus in the air passages, gut and pancreas.
Responda
- True
- False
Questão 43
Questão
There is no cure for Huntington's Disorder
Responda
- True
- False
Questão 44
Questão
A "carrier" of Huntington's Disorder will be a sufferer
Responda
- True
- False
Questão 45
Questão
The symptoms of Huntington's Disorder appear around the age of 15
Responda
- True
- False
Questão 46
Questão
IVF = in vitro fertilisation
Responda
- True
- False
Questão 47
Questão
Doctors 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.
Responda
- True
- False
Questão 48
Questão
What is it called when doctors test fetuses in the womb by testing the fluid surrounding the fetus?
Responda
-
IVF
-
Amniocentesis
-
That is not possible
Questão 49
Questão
Testing embryos for genetic disorders is known as...
Responda
-
Pre-implantation genetic diagnosis
-
Differentiation
-
Amniocentesis
Questão 50
Questão
Adults can be checked to see if they carry alleles for genetic disorders
Responda
- True
- False
Questão 51
Questão
What are the issues surrounding genetic testing?
Responda
-
No genetic tests are 100% accurate. There are always some errors due to things like samples getting contaminated or misinterpretation.
-
Tests carried out during pregnancy aren't 100% safe
-
Genetic testing can only take place after birth
-
You're not allowed to have children after being tested
-
Insurance companies might refuse to give life insurance to people with the "wrong" alleles
-
If the information becomes available to others, this might cause discrimination
Questão 52
Questão
Gene therapy may soon make it possible to treat or prevent genetic disorders
Responda
- True
- False
Questão 53
Questão
What could be the problems of gene therapy?
Responda
-
Some people have concerns about 'playing God'
-
Gene therapies carry risks. There are concerns that they could even cause cancers instead of preventing them.
-
There isn't any problems with gene therapy
Questão 54
Questão
Stem cells are unspecialised
Responda
- True
- False
Questão 55
Questão
Differentiation is the process by which a cell changes to become specialised for its job.
Responda
- True
- False
Questão 56
Questão
Stem cells are found in early human embryos
Responda
- True
- False
Questão 57
Questão
People 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.
Responda
- True
- False
Questão 58
Questão
No research is allowed on embryos older than...
Responda
-
A week
-
14 days
-
A month
-
A year
Questão 59
Questão
Scientists can extract stem cells from very early human embryos and grow them
Responda
- True
- False
Questão 60
Questão
How many genes determine which sex organs you develop?
Responda
-
1
-
2
-
3
-
4
-
8
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