Phiếu bài tập Sinh học cho kỳ thi đầu vào điều dưỡng có đáp án

What is a monosaccharide?

1. ATwo sugars joined together, such as sucrose
2. BA fat made of glycerol and fatty acids
3. CA single sugar unit, such as glucose
4. DA chain of many amino acids

What does DNA replication produce?

1. AFour different DNA molecules
2. BTwo identical DNA molecules
3. COne mRNA molecule
4. DA new protein

What do receptor proteins in the cell membrane do?

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

Which list puts these human energy sources in order from fastest to use to longest-lasting store?

1. AATP, then glycogen, then fat
2. BFat, then glycogen, then ATP
3. CGlycogen, then ATP, then fat
4. DATP, then fat, then glycogen

Which kind of mutation can be passed on to a person's children?

1. AA mutation in a white blood cell during infection
2. BA mutation in a skin cell caused by sunlight
3. CA mutation in a cell that forms eggs or sperm
4. DA mutation in a liver cell caused by alcohol

Sickle cell disease is caused by a single base change that replaces one amino acid in haemoglobin. What type of mutation is this?

1. AA silent mutation
2. BA missense mutation
3. CA nonsense mutation
4. DA frameshift mutation

Why do cells get far more ATP from glucose when oxygen is present than when it is absent?

1. AOxygen itself is converted into ATP in the mitochondria
2. BWithout oxygen, glucose cannot enter the cell or be broken down at all
3. CWithout oxygen only glycolysis runs, giving a net of 2 ATP per glucose
4. DWithout oxygen the Krebs cycle runs faster but makes less ATP

A bag made of membrane that lets only water through contains a 10% sugar solution. It is placed in a beaker of 5% sugar solution. What happens?

1. ASugar moves out of the bag until both are 7,5%
2. BWater moves out of the bag, and the bag loses mass
3. CNothing changes, because sugar cannot cross
4. DWater moves into the bag, and the bag gains mass