Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

In an enzyme reaction, what is the substrate?

1. AThe product released at the end
2. BThe part of the enzyme that changes shape
3. CThe substance that the enzyme acts on
4. DThe gene that codes for the enzyme

What is a chromosome?

1. AA long DNA molecule, packed with proteins, carrying many genes
2. BA strand of RNA that leaves the nucleus
3. CA single gene that codes for one protein
4. DA small organelle in the cytoplasm that makes ATP for the cell

Pernyataan manakah menghuraikan bakteria?

1. AIa bukan sel tetapi zarah protein dan DNA
2. BIa prokariot bersel tunggal
3. CIa eukariot bersel tunggal yang mempunyai nukleus
4. DIa organisma berbilang sel seperti tumbuhan

Salivary amylase begins the digestion of which nutrient in the mouth?

1. ACellulose
2. BStarch
3. CFat
4. DProtein

What happens during telophase of mitosis?

1. AThe sister chromatids are pulled apart
2. BThe DNA is copied for the next division
3. CThe chromosomes line up across the middle of the cell
4. DA nuclear envelope forms around each set of chromosomes

Which of these is part of the body's innate (non-specific) defence?

1. AAntibodies made after vaccination
2. BMemory B cells from an earlier infection
3. CT cells that recognise one virus
4. DThe skin and stomach acid

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 products have turned back into substrate
3. CThe enzyme has been denatured
4. DThe substrate has become an inhibitor

In the Hershey–Chase experiment, viruses were labelled with radioactive phosphorus in their DNA or radioactive sulfur in their protein. Only the phosphorus entered the infected bacteria. What did this show?

1. ADNA, not protein, is the genetic material of the virus
2. BViruses contain no DNA at all
3. CProtein, not DNA, is the genetic material of the virus
4. DBacteria take up any radioactive substance