उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a eukaryote?

1. AAn organism made of a single cell without a nucleus
2. BAn organism that lives only in extreme heat
3. CAn organism whose cells have a nucleus
4. DA virus that infects animal cells

What is the pH of pure water at 25 °C?

1. A1
2. B0
3. C7
4. D14

Which type of microscope is needed to see a virus?

1. AA light microscope
2. BA dissecting microscope
3. CAn electron microscope
4. DA magnifying glass

There are 64 possible codons but only about 20 amino acids. What does this tell you about the genetic code?

1. AEach codon codes for more than one amino acid at the same time
2. BEach amino acid has exactly three codons
3. CMost amino acids are coded for by more than one codon
4. DOnly 20 of the codons are ever used

What does the enzyme lipase break down?

1. AFats into fatty acids and glycerol
2. BDNA into nucleotides
3. CProteins into amino acids and peptides
4. DStarch into sugars

Nearly all cells in a person's body contain the same DNA. Why do nerve cells and muscle cells look and work so differently?

1. ADifferent genes are switched on in each type of cell
2. BEach cell type has a different set of chromosomes
3. CNerve cells have lost the genes for muscle proteins
4. DMuscle cells have extra DNA from mitochondria

स्वयंसेवक 0, 100 या 200 mg कैफ़ीन पीते हैं, और 30 मिनट बाद उनकी हृदय गति मापी जाती है। आश्रित चर क्या है?

1. Aस्वयं स्वयंसेवक
2. B30 मिनट का प्रतीक्षा समय
3. C30 मिनट बाद की हृदय गति
4. Dकैफ़ीन की खुराक

Why do cells get far more ATP from glucose when oxygen is present than when it is absent?

1. AOxygen itself is converted into ATP in the mitochondria
2. BWithout oxygen only glycolysis runs, giving a net of 2 ATP per glucose
3. CWithout oxygen the Krebs cycle runs faster but makes less ATP
4. DWithout oxygen, glucose cannot enter the cell or be broken down at all