उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

कौन-सी संरचना पादप कोशिकाओं में होती है पर जंतु कोशिकाओं में नहीं?

1. Aकोशिका भित्ति
2. Bमाइटोकॉन्ड्रिया
3. Cकोशिका झिल्ली
4. Dराइबोसोम

What are the parts of a triglyceride (a fat molecule)?

1. ATwo glycerols and one fatty acid
2. BOne amino acid and three fatty acids
3. COne glycerol and three fatty acids
4. DThree glucose units and one phosphate

In genetics, what is a carrier?

1. AA person with two recessive alleles who has the disorder
2. BA person who has a dominant disorder
3. CA person who has lost both alleles for the gene, so shows no trait
4. DA person with one recessive allele for a disorder but no symptoms

Why are G–C base pairs held together more strongly than A–T pairs?

1. AG and C are both purines, so they fit more tightly
2. BG–C pairs form three hydrogen bonds, and A–T pairs form two
3. CA–T pairs are found only in RNA
4. DG–C pairs are joined by strong covalent bonds instead of hydrogen bonds

कोडॉन क्या है?

1. Aएक प्रोटीन जो अनुलेखन (ट्रांसक्रिप्शन) शुरू करता है
2. Bगुणसूत्र का वह भाग जहाँ माइटोसिस में तर्क-तंतु जुड़ते हैं
3. CmRNA के तीन क्षारकों का समूह जो एक अमीनो अम्ल का कूट देता है
4. Dएक अकेला क्षारक जो प्रोटीन का कूट देता है

Which body system works with the respiratory system to deliver oxygen to body cells?

1. AThe circulatory system
2. BThe urinary system
3. CThe digestive system
4. DThe skeletal system

A single-celled organism has a nucleus, no cell wall and swims using cilia. In which group is it best placed?

1. APlants
2. BFungi
3. CProtists
4. DBacteria

A patient breathes very slowly, so carbon dioxide builds up in the blood. What happens to the blood pH, and why?

1. AIt falls, because CO₂ forms carbonic acid in the blood
2. BIt rises, because CO₂ removes hydrogen ions
3. CIt stays the same, because CO₂ does not dissolve in blood
4. DIt rises, because CO₂ is a base