उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a stem cell?

1. AAn unspecialised cell that can divide and become other cell types
2. BA fully specialised cell that can no longer divide or change its type
3. CA cell that carries oxygen in the blood
4. DA plant cell found only in the stem

यूकैरियोटिक कोशिका का अधिकांश DNA कहाँ पाया जाता है?

1. Aलाइसोसोम में
2. Bकेंद्रक में
3. Cकोशिका भित्ति में
4. Dकोशिका झिल्ली में

Which group of biomolecules forms the basic bilayer of the cell membrane and also stores long-term energy?

1. ANucleic acids
2. BProteins
3. CLipids
4. DCarbohydrates

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt gives a large surface area for gas exchange
2. BIt lets them hold a larger nucleus and more DNA
3. CIt helps them divide faster
4. DIt makes them stick to vessel walls

A patient's heart rate is measured four times: 70, 72, 74 and 80 beats per minute. What is the mean?

1. A72 beats per minute
2. B80 beats per minute
3. C74 beats per minute
4. D73 beats per minute

Which is the correct way to write the scientific name of the gut bacterium?

1. AEscherichia coli
2. BEscherichia Coli
3. Ccoli Escherichia
4. DEscherichia Coli

The lion is Panthera leo, the tiger is Panthera tigris and the house cat is Felis catus. Which two are most closely related?

1. AThe lion and the tiger
2. BAll three are equally related
3. CThe tiger and the house cat
4. DThe lion and the house cat

A person's body temperature starts to fall in a cold room. Which responses help bring it back up?

1. ASweating and widening of blood vessels in the skin
2. BFaster breathing and more urine production
3. CShivering and narrowing of blood vessels in the skin
4. DSlower heart rate and less muscle activity