Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

In science, what is an observation?

1. AA rule that explains all known facts
2. BA guess about why something happens
3. CA conclusion drawn before any data are collected
4. DInformation gathered with the senses or instruments

Which sex chromosomes does a typical human male have?

1. AYY
2. BXY
3. CX only
4. DXX

What does the polymerase chain reaction (PCR) do?

1. AIt cuts DNA at specific sequences
2. BIt separates proteins by their charge
3. CIt makes many copies of a piece of DNA
4. DIt turns RNA into protein

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the thylakoid membranes
2. BIn the stroma
3. CIn the cell wall
4. DIn the outer membrane

Human adult height varies across a smooth, continuous range rather than falling into a few separate groups. What is the best explanation?

1. AIt is controlled by one gene with two alleles and full dominance
2. BIt is controlled only by the environment
3. CIt is an X-linked recessive trait
4. DIt is controlled by many genes and also affected by environment

Which is an example of negative feedback?

1. ABlood clotting speeding up once it starts
2. BSweating when body temperature rises
3. CA wound becoming more inflamed over time
4. DContractions growing stronger during labour

A patient with type A blood is given type B red blood cells by mistake. What is the cause of the reaction that follows?

1. AThe donor's B antigens destroy the patient's white blood cells
2. BAnti-A antibodies on the donor cells attack the patient's plasma
3. CThe patient's A antigens dissolve the donor's haemoglobin
4. DAnti-B antibodies in the patient's plasma attack the donor cells

The rate of an enzyme reaction rises as substrate is added but then levels off, even when more substrate is added. Why?

1. AAll the active sites are occupied
2. BThe substrate has become an inhibitor
3. CThe products have turned back into substrate
4. DThe enzyme has been denatured