उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What does sterilisation mean?

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

What is the correct order of the phases of mitosis?

1. AProphase, anaphase, metaphase, telophase
2. BProphase, metaphase, anaphase, telophase
3. CTelophase, anaphase, metaphase, prophase
4. DMetaphase, prophase, anaphase, telophase

What is the main job of the large central vacuole in a plant cell?

1. AIt copies DNA before the cell divides
2. BIt stores water and keeps the cell firm
3. CIt assembles proteins from amino acids
4. DIt captures light energy for photosynthesis

Why is water good at dissolving salts and sugars?

1. AIt contains carbon atoms
2. BIts molecules are nonpolar
3. CIts molecules are polar
4. DIt has a very low boiling point

माइटोसिस की किस अवस्था में सहोदर क्रोमैटिड विपरीत ध्रुवों की ओर खींचे जाते हैं?

1. Aप्रोफ़ेज़
2. Bइंटरफ़ेज़
3. Cएनाफ़ेज़
4. Dमेटाफ़ेज़

In gel electrophoresis, why does DNA move towards the positive electrode?

1. ADNA has no charge and moves at random
2. BDNA has a positive charge from the nitrogen bases it contains
3. CDNA has a negative charge from its phosphate groups
4. DDNA is pulled by gravity through the gel

Why does cooking oil not mix with water?

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

Two parents are both AaBbCc, and the three genes assort independently. What is the probability that a child is aabbcc?

1. A3/64
2. B1/16
3. C1/64
4. D1/8