उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a karyotype?

1. AA picture of a cell's chromosomes arranged in pairs by size
2. BA map of the organelles inside a cell
3. CA list of all the proteins that a cell makes during its life
4. DA diagram of a family's inheritance pattern

DNA में ऐडेनिन हमेशा किस क्षारक के साथ युग्म बनाता है?

1. Aथाइमिन
2. Bयूरेसिल
3. Cग्वानिन
4. Dसाइटोसिन

What is transpiration?

1. AThe loss of water vapour from the leaves of a plant
2. BThe taking in of CO₂ for photosynthesis
3. CThe growth of roots towards water
4. DThe movement of sugars through the phloem to the roots

दो विषमयुग्मजी जनकों (Aa × Aa) का संकरण कराया जाता है, और A पूर्णतः प्रभावी है। अपेक्षित फ़ीनोटाइप अनुपात क्या है?

1. Aसभी प्रभावी
2. B3 प्रभावी : 1 अप्रभावी
3. C1 प्रभावी : 2 मध्यवर्ती : 1 अप्रभावी
4. D1 प्रभावी : 1 अप्रभावी

Which DNA bases are purines?

1. AAdenine and guanine
2. BCytosine and guanine
3. CAdenine and thymine
4. DCytosine and thymine

A study finds a positive correlation between hours of exercise and lung capacity. What does this mean?

1. AThere is no link between the two variables
2. BExercise has been proven to cause higher lung capacity
3. CAs exercise increases, lung capacity tends to decrease
4. DAs exercise increases, lung capacity tends to increase

Why are there usually far fewer top predators than herbivores in an ecosystem?

1. AEnergy is lost at each step, leaving little for the top level
2. BTop predators need less energy than herbivores
3. CTop predators reproduce faster than herbivores, so they die sooner
4. DHerbivores eat the young of top predators

A colour-blind man (XᵇY) has children with a woman who carries the allele (XᴮXᵇ). What is the probability that a daughter is colour-blind?

1. A1/2
2. B1
3. C0
4. D1/4