उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

Which piece of equipment gives the most precise measurement of a liquid volume?

1. AA beaker
2. BA Petri dish
3. CA test tube
4. DA graduated cylinder

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

1. Aग्वानिन
2. Bयूरेसिल
3. Cथाइमिन
4. Dसाइटोसिन

What does sterilisation mean?

1. AReducing the number of microbes on the skin before an injection
2. BWashing away visible dirt with water
3. CKilling or removing all microorganisms, including spores
4. DKilling only the viruses on a surface

What is meant by independent assortment in meiosis?

1. ADNA is copied separately in each chromosome
2. BHomologous pairs line up randomly, so gametes get different mixes of chromosomes
3. CSister chromatids stay joined until the end of meiosis, so all gametes are identical
4. DAll chromosomes from the mother go into the same gamete

In disease spread, what is a vector?

1. AA blood test used to detect antibodies
2. BThe first person to catch a disease
3. CA medicine that destroys a pathogen in the body
4. DAn organism that carries a pathogen between hosts

वैज्ञानिक सिद्धांत (थ्योरी) परिकल्पना से किस प्रकार भिन्न है?

1. Aसिद्धांत एक प्रयोग का परिणाम है
2. Bयह बहुत-से परखे हुए प्रमाणों द्वारा समर्थित व्यापक स्पष्टीकरण है
3. Cसिद्धांत एक अनुमान है जिसका अभी परीक्षण नहीं हुआ
4. Dसिद्धांत को नए आँकड़ों से कभी बदला नहीं जा सकता

Bacteria in a closed flask grow quickly at first, but the population then stops increasing. What is the main reason?

1. AThe bacteria change into viruses after many divisions
2. BNutrients run out and waste products build up
3. CThe bacteria stop dividing once they reach adult size
4. DThe flask becomes too cold for growth

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

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