उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

समसूत्री विभाजन (माइटोसिस) से क्या बनता है?

1. Aगुणसूत्र संख्या की आधी वाली दो कोशिकाएँ
2. Bदो आनुवंशिक रूप से समान संतति कोशिकाएँ
3. Cचार आनुवंशिक रूप से भिन्न संतति कोशिकाएँ
4. Dगुणसूत्र संख्या की दोगुनी वाली एक कोशिका

What is a heterotroph?

1. AAn organism with no cells
2. BAn organism that gets its food from other organisms
3. CAn organism that makes its own food by photosynthesis
4. DAn organism that lives only in water

What is a bacteriophage?

1. AA fungus that kills bacteria
2. BA virus that infects bacteria
3. CA bacterium that infects viruses
4. DA white cell that eats bacteria

Dolly the sheep was cloned by putting the nucleus of an adult body cell into an egg cell whose nucleus had been removed. Whose nuclear DNA did Dolly have?

1. AThe sheep that gave the egg cell
2. BThe sheep that carried the pregnancy
3. CAn equal mix of all three sheep
4. DThe sheep that gave the body cell nucleus

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

1. AAll organisms have exactly the same genes
2. BEvery cell in the body makes the same proteins
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

Which process removes carbon dioxide from the atmosphere?

1. APhotosynthesis
2. BDecomposition
3. CBurning fossil fuels
4. DCellular respiration

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

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

Fresh liver is dropped into hydrogen peroxide and bubbles form quickly. Boiled liver gives no bubbles. What is the best conclusion?

1. ALiver contains an enzyme that is destroyed by boiling
2. BBoiled liver contains more hydrogen peroxide than fresh liver
3. CHydrogen peroxide is broken down only by heat
4. DThe bubbles are carbon dioxide from respiration