Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is a decomposer?

1. AAn animal that hunts other animals
2. BAn animal that eats only plants
3. CAn organism that breaks down dead material
4. DAn organism that makes food from sunlight

In genetics, what is a carrier?

1. AA person with two recessive alleles who has the disorder
2. BA person with one recessive allele for a disorder but no symptoms
3. CA person who has lost both alleles for the gene, so shows no trait
4. DA person who has a dominant disorder

Di manakah kebanyakan DNA sel eukariot ditemui?

1. ADalam lisosom
2. BDalam membran sel
3. CDalam nukleus
4. DDalam dinding sel

What is the role of oxygen in aerobic respiration?

1. AIt is split to release the energy needed for glycolysis
2. BIt accepts electrons at the end of the transport chain
3. CIt is built into glucose molecules
4. DIt breaks pyruvate into lactic acid

Why can DNA profiling (fingerprinting) identify individual people?

1. AEvery person has a different number of chromosomes in their cells
2. BDNA in blood differs from DNA in skin
3. CEach person's genes code for different amino acids
4. DRepeated non-coding DNA regions vary in length between people

What happens to an enzyme after it has catalysed a reaction?

1. AIt is released unchanged and can be used again
2. BIt changes into the substrate
3. CIt becomes part of the product and leaves with it
4. DIt is broken down into amino acids

At 100× total magnification, the field of view of a microscope is 2 mm wide. What is its width at 400×?

1. A0.2 mm
2. B8 mm
3. C2 mm
4. D0.5 mm

People who carry one sickle cell allele are more resistant to malaria. Why is the allele common in regions where malaria is widespread?

1. AThe allele is dominant, so it spreads by itself
2. BPeople with two sickle alleles are fully healthy there
3. CMalaria causes the sickle cell mutation directly
4. DNatural selection favours the heterozygotes there