उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What does sterilisation mean?

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

What is the SI base unit of mass?

1. AKilogram
2. BGram
3. CPound
4. DLitre

What is an antigen?

1. AA molecule that the immune system sees as foreign
2. BA protein that carries oxygen
3. CA drug that kills viruses
4. DA white blood cell that engulfs and digests bacteria

By which process does oxygen enter a cell and carbon dioxide leave it?

1. AActive transport by membrane pumps
2. BSimple diffusion through the lipid bilayer
3. CFacilitated diffusion through glucose carriers
4. DEndocytosis in small vesicles

A woman with blood type O has a child with a man of type AB. Which blood types can their children have?

1. AO only
2. BO or AB
3. CA or B
4. DA, B, AB or O

What is a chromosomal translocation?

1. AOne DNA base is replaced by another base
2. BA piece of one chromosome attaches to a non-matching chromosome
3. CA piece of a chromosome is flipped around in place
4. DA piece of a chromosome is copied twice and stays in the same place

Why can standard DNA profiling not tell identical twins apart?

1. ATwins always share the same fingerprints on their hands
2. BOnly one twin inherits the father's DNA
3. CIdentical twins have no non-coding DNA
4. DIdentical twins come from one zygote and have the same DNA

Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?

1. A46, one for each chromosome
2. B2 × 23, which is 46
3. C23², about 529
4. D2²³, about 8 million