Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is transpiration?

1. AThe taking in of CO₂ for photosynthesis
2. BThe movement of sugars through the phloem to the roots
3. CThe growth of roots towards water
4. DThe loss of water vapour from the leaves of a plant

What is a neuron?

1. AA nerve cell that carries electrical signals
2. BA blood cell that carries oxygen around the body
3. CA muscle cell that contracts
4. DA bone cell that stores calcium

What do receptor proteins in the cell membrane do?

1. AThey bind specific signal molecules, such as hormones
2. BThey store the cell's genetic code for making proteins
3. CThey digest bacteria that enter the cell
4. DThey make ATP for the cell

What is an inversion mutation?

1. AA chromosome segment breaks off and is reattached the wrong way round
2. BA segment of a chromosome is lost completely
3. CA segment of a chromosome moves to a different, non-matching chromosome
4. DA whole extra chromosome is added to the cell

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor red cells divide to make more red cells
2. BThe transplant replaces the patient's bones
3. CThe donor stem cells produce new, healthy blood cells
4. DThe donor marrow contains antibiotics that kill cancer

Golden rice was genetically modified to make beta-carotene. What is the aim?

1. ATo make the rice resistant to all insects
2. BTo help prevent vitamin A deficiency
3. CTo increase the protein content of the rice
4. DTo make the rice grow faster in cold climates

Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?

1. A2²³, about 8 million
2. B23², about 529
3. C2 × 23, which is 46
4. D46, one for each chromosome

PCR starts with one double-stranded DNA molecule, and the number of copies doubles each cycle. How many copies are there after 10 cycles?

1. A1024
2. B512
3. C100
4. D20