उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is homeostasis?

1. AChanging a species over many generations
2. BBreaking down food for energy
3. CKeeping a stable internal environment
4. DMaking identical copies of a cell

यूकैरियोटिक कोशिका में अधिकांश ATP कौन-सा कोशिकांग बनाता है?

1. Aराइबोसोम
2. Bलाइसोसोम
3. Cमाइटोकॉन्ड्रिया
4. Dगॉल्जी उपकरण

किसी प्रयोग में स्वतंत्र चर क्या होता है?

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

जीनोटाइप Aa वाले पौधे का संकरण aa पौधे से कराया जाता है। संतानों का कौन-सा अंश अप्रभावी लक्षण दिखाएगा?

1. A1/4
2. Bउनमें से कोई नहीं
3. C1/2
4. D3/4

What are introns?

1. ACoding sections joined together to form the mature mRNA
2. BNon-coding sections removed from pre-mRNA before translation
3. CShort pieces of DNA made on the lagging strand
4. DCodons that tell the ribosome to stop translation

What happens to a protein when it is denatured?

1. AIt turns into a carbohydrate
2. BIt loses some of its amino acids but keeps its folded shape
3. CIt loses its 3D shape but keeps its amino acid sequence
4. DIt becomes more active than before

Why can standard DNA profiling not tell identical twins apart?

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

A mutation changes one amino acid in an enzyme. In which location is the change most likely to stop the enzyme from working?

1. AOn the outer surface, far from the active site
2. BIn a section that is removed after the protein is made
3. CIn the active site
4. DIn the gene's stop codon