उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is phagocytosis?

1. AA cell taking in small droplets of fluid
2. BA cell releasing hormones by exocytosis
3. CA cell dividing into two identical daughter cells
4. DA cell engulfing large particles such as bacteria

किसी प्रयोग में आश्रित चर क्या होता है?

1. Aकोई भी कारक जिसे स्थिर रखा जाता है
2. Bवह कारक जिसे शोधकर्ता जान-बूझकर बदलता है
3. Cपरीक्षण की जा रही परिकल्पना
4. Dवह कारक जिसे प्रभाव देखने के लिए मापा जाता है

Which substances are used up in aerobic cellular respiration?

1. AGlucose and oxygen
2. BCarbon dioxide and water
3. CGlucose and carbon dioxide
4. DOxygen and water

The genetic code is described as nearly universal. What does this mean?

1. AEvery cell in the body makes the same proteins
2. BAll organisms have exactly the same genes
3. CThe same codons mean the same amino acids in nearly all organisms
4. DAll organisms have the same number of chromosomes in their cells

Why can DNA profiling (fingerprinting) identify individual people?

1. ARepeated non-coding DNA regions vary in length between people
2. BDNA in blood differs from DNA in skin
3. CEach person's genes code for different amino acids
4. DEvery person has a different number of chromosomes in their cells

Why is the ABO blood group system an example of multiple alleles?

1. ABlood type is controlled by many separate genes
2. BThere are three alleles of the gene in the population
3. CEach person carries three different alleles of the ABO gene
4. DThe gene is found on several chromosomes

One sample of an enzyme is boiled and then cooled to 37 °C. Another is kept at 4 °C and then warmed to 37 °C. Which sample will work at 37 °C?

1. AOnly the sample that was kept at 4 °C
2. BNeither sample will work
3. CBoth samples will work equally well
4. DOnly the sample that was boiled

Plasmids with an ampicillin-resistance gene are mixed with bacteria, which are then spread on a plate containing ampicillin. Why do only a few colonies grow?

1. AOnly the bacteria that took up the plasmid can survive
2. BThe plasmid kills the bacteria that do not grow
3. CAmpicillin makes some bacteria take up the plasmid
4. DAll the bacteria die, and the colonies are fungi