Genetics and Molecular Biology Quiz

What is the hereditary material of most organisms?

• RNA

• Proteins

• DNA

• Chromosomes

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What is DNA responsible for in living organisms?

• Directing protein synthesis

• Storing energy

• Regulating cell division

• Providing immunity

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What controls the intermediate steps involved in protein synthesis?

• DNA

• RNA

• Chromosomes

• Genes

What are genes?

• Protein molecules

• Segments of RNA

• Segments of DNA that code for specific proteins

• Structures that store chromosomes

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Where are genes located?

• In the cytoplasm

• On chromosomes

• On histone proteins

• In mitochondria

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How do offspring inherit traits?

• From environmental factors

• From their parents' DNA

• Through RNA molecules

• Through protein synthesis

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What is contained in chromosomes?

• RNA

• Genes

• DNA

• Proteins

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What is the structure of chromosomes?

• Tightly coiled DNA wrapped around histone proteins

• Linear RNA molecules wrapped around DNA

• Proteins coiled around RNA

• Circular DNA and proteins

Why is the DNA in chromosomes tightly coiled?

• To increase gene expression

• To prevent mutations

• To allow regulation of genes

• To make protein synthesis faster

How many chromosomes do humans have?

• 46

• 23

• 78

• 12

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