Test
B3 - Living and growing
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Preguntas del test (27)
1What do mitochondria do?
- AThey're the site of respiration in the cell
- BThey're the site of protein synthesis in the cell
- CThey produce enzymes
- DThey're the site of photosynthesis in the cell
2The liver has few mitochondria
- AVerdadero
- BFalso
3Where in the cell are the ribosomes found?
- AIn the cytoplasm
- BIn the nucleus
- CIn all parts of the cell
4What is a gene and what does it do?
- AA section of a chromosome made of DNA
- BA trouser made of denim
- CThe characteristics expressed by an individual
- DIt codes for a particular protein
- EIt allows protein synthesis to occur outside of the nucleus
5What are the complementary base pairings?
- AA-T, C-G
- BA-G, C-T
- CG -T, A-C
- DA-A, C-C, T-T, G-G
6How does protein synthesis occur outside of the nucleus when DNA can't leave the nucleus?
- AmRNA carriers a copy of the DNA to the ribosomes
- BThe gene splits from the DNA and goes to the ribosomes
- CThe ribosomes come into the nucleus
7What does meiosis produce?
- A2 haploid cells
- B4 haploid cells
- C2 diploid cells
- D4 diploid cells
8The cells produced from mitosis are genetically identical
- AVerdadero
- BFalso
9What is mitosis used for?
- AGrowth
- BTo make gametes
- CRepair
- DSexual reproduction
- EAsexual reproduction
10How does DNA replicate?
- A1. A double helix unzips to form two single strands of DNA
- B1. It pairs up with another strand of DNA
- C1. Half of the bases are removed from the DNA
- D2. New complementary base pairs join up with the existing ones
- E2. The two strands wind back together but in a different order
11Is this meiosis or mitosis?
- AMeiosis
- BMitosis
12What are the advantages of being multicellular?
- Ayou can grow larger
- Bit allows cell differentiation
- Corganisms can become more complex
- Dyou have spares in case some cells die
13When an organism becomes multicellular it must have...
- Acommunication systems between cells
- Ba system to supply cells with nutrients
- Ca system to control exchanges between cells
- Da larger surface area
14What is metabolic rate?
- AThe sum of all of the reactions occurring in the body
- BHow quickly you can digest food
- CThe rate at which you respire
15Why do changes in temperature and pH affect respiration?
- ABecause respiration is controlled by enzymes
- BBecause muscles are slower when they're hot
- CThe oxygen content in the air changes in different pHs
16What are the ethical issues with cloning animals?
- Apeople think it's wrong to interfere with nature
- Bcloning animals will cause mutants that revolt against humans, e.g. the wererabbit
- CCloning people will make someone that is not a real individual and that is wrong
17Cloning plants is easier because plant cells retain the ability to differentiate
- AVerdadero
- BFalso
18The first stage of genetic engineering is to insert a gene into another organism
- AVerdadero
- BFalso
19What are the ethical issues of genetically engineering?
- APeople are worried about the health risks of genetically engineered food
- BPeople are worried that genetically engineered food wont taste nice
- CPeople are worried that genetically modified plants/animals will disrupt the natural ecosystems
- DSome people think it's morally wrong to create new life forms or move genes between species
- ESome people are worried that the animal will lose connections with its friends if it is genetically modified and its friends aren't
20Nuclear transfer can be used to clone animals
- AVerdadero
- BFalso
21What are the uses of cloning animals?
- AMass producing animals with desired characteristics, e.g. cows that produce a lot of milk
- BProducing lots of animals that have been genetically modified to provide human products
- Cproducing human embryos to provide stem cells for research and therapy
22The right ventricle has a thicker layer of muscle around it than the left ventricle
- AVerdadero
- BFalso
23What does the Aorta do?
- ATransport oxygenated blood around the body from the heart
- BTransport blood from the heart to the lungs
- CTransport de-oxygenated blood from the body to the heart
- DTransport de-oxygenated blood from the heart to the body
24The tricuspid valve is on the right side of the heart
- AVerdadero
- BFalso
25Why are there valves in the heart?
- ATo prevent backflow
- BTo prevent forward flow
- CThere are no valves in the heart
26What are the advantages of a double circulatory system?
- AIt allows blood to be pumped at a higher pressure
- BBlood can be pumped faster
- CThe blood doesn't have to travel as far
27What are the differences between plant growth and animal growth?
- APlant cells retain the ability to differentiate
- BPlants can keep growing forever
- CAnimals can keep growing forever
- DPlant cells mainly grow by enlarging whereas humans grow by cell division
Información
- Descripción
- Biology Test sobre B3 - Living and growing, creado por Nicole Saville el 18/05/2014.
- Autor
- Nicole Saville
- Idioma
- English
- Visitas
- 175
- Etiquetas
- Valoración
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