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

What is a chromosomal deletion?

1. AThe swap of a single DNA base
2. BThe loss of a piece of a chromosome
3. CA piece of chromosome that is turned around
4. DAn extra copy of a whole chromosome

Bốn loại base nào có trong DNA?

1. AAlanine, thymine, glycine và cysteine
2. BAdenine, thymine, guanine và cytosine
3. CAdenine, thymine, glucose và cytosine
4. DAdenine, uracil, guanine và cytosine

What does sterilisation mean?

1. AReducing the number of microbes on the skin before an injection
2. BKilling or removing all microorganisms, including spores
3. CWashing away visible dirt with water
4. DKilling only the viruses on a surface

After gel electrophoresis, which DNA fragments are found furthest from the wells?

1. AThe largest fragments
2. BThe smallest fragments
3. CThe fragments with the most adenine
4. DThe fragments with the most guanine

Yeast in bread dough breaks down sugar without oxygen. What does it produce?

1. ALactic acid and carbon dioxide
2. BOxygen and water
3. CEthanol and carbon dioxide
4. DGlucose and oxygen

Why does ice float on liquid water?

1. AIce molecules are lighter than liquid water molecules
2. BIce is denser than liquid water
3. CHydrogen bonds hold ice in an open, less dense structure
4. DIce contains more air than liquid water

Một vi khuẩn đơn lẻ phân chia mỗi 20 phút. Nếu không con nào chết, sau 2 giờ có bao nhiêu vi khuẩn?

1. A12
2. B32
3. C128
4. D64

Why is ATP described as an energy carrier rather than a long-term energy store?

1. AATP is stored in large amounts in fat tissue
2. BCells hold only a little and constantly recycle it from ADP
3. CATP can be made only in plants
4. DATP contains no energy in its bonds, so it cannot be stored