उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is the correct order of levels of organisation, from smallest to largest?

1. ACell, organ, tissue, organism, organ system
2. BOrgan, tissue, cell, organ system, organism
3. CTissue, cell, organ, organism, organ system
4. DCell, tissue, organ, organ system, organism

What is the R group of an amino acid?

1. AThe side chain that differs between amino acids
2. BThe peptide bond between two amino acids
3. CThe carboxyl group at one end
4. DThe amino group that is shared by all amino acids

Which sex chromosomes does a typical human male have?

1. AXX
2. BYY
3. CX only
4. DXY

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

1. AFacilitated diffusion through glucose carriers
2. BActive transport by membrane pumps
3. CSimple diffusion through the lipid bilayer
4. DEndocytosis in small vesicles

What is the difference between an antiseptic and a disinfectant?

1. AAntiseptics are antibiotics; disinfectants are vaccines
2. BAntiseptics kill all spores; disinfectants kill none
3. CAntiseptics are used on objects and floors; disinfectants are used on skin
4. DAntiseptics are used on living tissue; disinfectants are used on objects

A person catches chickenpox once and does not usually become ill with it again. Why?

1. AAntibodies from the first infection turn into new viruses
2. BMemory cells give a faster, stronger response the next time
3. CThe skin becomes thicker after the first infection
4. DThe virus stays in the blood and kills new viruses

One sample of an enzyme is boiled and then cooled to 37 °C. Another is kept at 4 °C and then warmed to 37 °C. Which sample will work at 37 °C?

1. ANeither sample will work
2. BOnly the sample that was boiled
3. CBoth samples will work equally well
4. DOnly the sample that was kept at 4 °C

After a meal, blood glucose rises. Which response brings it back to normal?

1. AThe liver stops storing glycogen and releases more glucose
2. BThe kidneys release insulin into the urine
3. CThe pancreas releases glucagon, and the liver releases glucose
4. DThe pancreas releases insulin, and cells take up glucose