उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What are the three domains of life?

1. AProkaryotes, plants and animals
2. BBacteria, viruses and protists
3. CBacteria, Archaea and Eukarya
4. DPlants, animals and fungi

किसी प्रयोग में स्वतंत्र चर क्या होता है?

1. Aवह कारक जिसे शोधकर्ता जान-बूझकर बदलता है
2. Bवह समूह जिसे कोई उपचार नहीं मिलता
3. Cवह कारक जिसे परिणाम के रूप में मापा जाता है
4. Dवह कारक जो हर समूह में समान रखा जाता है

What is the main material in the cell wall of bacteria?

1. APeptidoglycan
2. BCellulose
3. CChitin
4. DKeratin

Why is water good at dissolving salts and sugars?

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

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the thylakoid membranes
2. BIn the outer membrane
3. CIn the cell wall
4. DIn the stroma

How does facilitated diffusion differ from active transport?

1. AIt moves only water and no other substances
2. BIt needs ATP and moves substances against their gradient
3. CIt needs no energy and moves substances down their gradient
4. DIt works without any membrane proteins

Some chemotherapy drugs stop spindle fibres from forming. Why do they often cause hair loss and damage to the gut lining?

1. AThese cells have no mitochondria
2. BThese tissues also contain rapidly dividing cells
3. CThese tissues are made only of haploid cells
4. DThese cells divide by meiosis instead of mitosis

A breastfed baby receives antibodies from its mother's milk. Why does this protection last only a short time?

1. AThe antibodies turn into memory cells after a few weeks
2. BThe antibodies from breast milk attack the baby's own red blood cells
3. CThe baby did not make these antibodies and forms no memory cells
4. DThe baby's stomach makes the antibodies more active