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

Which enzyme adds new nucleotides to build a new DNA strand?

1. ADNA polymerase
2. BRNA polymerase
3. CHelicase
4. DPepsin

Protein được lắp ráp từ các amino acid trên cấu trúc nào?

1. ATrung thể
2. BKhông bào
3. CRibosome
4. DLysosome

Glucose là ví dụ về loại phân tử nào?

1. ALipid
2. BMonosaccharide
3. CProtein
4. DPolysaccharide

During childbirth, pressure on the cervix causes oxytocin release, which causes stronger contractions and more pressure. What kind of control is this?

1. AHomeostatic balance
2. BPositive feedback
3. CNegative feedback
4. DNatural selection

DNA được sao chép vào lúc nào trong chu kỳ tế bào?

1. ATrong kỳ giữa của nguyên phân
2. BTrong quá trình phân chia tế bào chất
3. CChỉ trong giảm phân II
4. DỞ pha S của gian kỳ

Nerve cells release chemical messengers (neurotransmitters) stored in vesicles. By which process are they released?

1. APhagocytosis
2. BOsmosis
3. CExocytosis
4. DEndocytosis

Why does cooking oil not mix with water?

1. AOil molecules are polar and repel the charged ends of water molecules
2. BWater molecules are nonpolar and avoid each other
3. COil molecules are nonpolar and cannot form hydrogen bonds with water
4. DOil is denser than water and sinks

Griffith injected mice with heat-killed harmful bacteria mixed with live harmless bacteria. The mice died, and live harmful bacteria were found in them. What did this show?

1. AA substance from the dead bacteria changed the harmless ones
2. BHeat makes harmless bacteria become harmful when they are injected
3. CThe mice were killed by the dead bacteria alone
4. DBacteria can be killed by the immune system of mice