उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is the pH of pure water at 25 °C?

1. A7
2. B14
3. C0
4. D1

Which kind of organism causes malaria?

1. AA fungus that grows on skin
2. BA protist carried by mosquitoes
3. CA virus spread by coughing
4. DA bacterium carried in water

Which gas do plants take in from the air for photosynthesis?

1. AHydrogen
2. BOxygen
3. CNitrogen
4. DCarbon dioxide

How does cytokinesis differ between animal cells and plant cells?

1. AOnly animal cells carry out cytokinesis
2. BAnimal cells build a cell plate; plant cells pinch in with a furrow
3. CAnimal cells pinch in with a furrow; plant cells build a cell plate
4. DOnly plant cells carry out cytokinesis

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe transplant replaces the patient's bones
2. BThe donor marrow contains antibiotics that kill cancer
3. CThe donor red cells divide to make more red cells
4. DThe donor stem cells produce new, healthy blood cells

A tablet contains 2.5 g of a substance. How many milligrams is this?

1. A250 mg
2. B25 mg
3. C0.0025 mg
4. D2500 mg

People who carry one sickle cell allele are more resistant to malaria. Why is the allele common in regions where malaria is widespread?

1. AMalaria causes the sickle cell mutation directly
2. BPeople with two sickle alleles are fully healthy there
3. CNatural selection favours the heterozygotes there
4. DThe allele is dominant, so it spreads by itself

Liver cells take in cholesterol-carrying LDL particles only after the particles bind to specific proteins on the cell surface. Which process is this?

1. APinocytosis of extracellular fluid
2. BSimple diffusion
3. CExocytosis
4. DReceptor-mediated endocytosis