DNA and RNA Structure and Function

The video tutorial explains the differences between DNA and RNA. DNA is typically double-stranded and larger, with millions of nucleotides, while RNA is single-stranded and smaller. DNA contains deoxyribose sugar, whereas RNA contains ribose sugar. DNA is mainly found in the nucleus, with some in mitochondria, while RNA is found in the cytosol and ribosomes. DNA has four nitrogenous bases: adenine, guanine, cytosine, and thymine, whereas RNA has uracil instead of thymine.

Which of the following statements is true about the structure of DNA?

• DNA is found in the cytosol.

• DNA is single-stranded.

• DNA is double-stranded.

• DNA has a ribose sugar.

How does the size of DNA compare to RNA?

• DNA and RNA are the same size.

• RNA is larger than DNA.

• DNA is smaller than RNA.

• DNA is larger than RNA.

What type of sugar is found in DNA?

• Deoxyribose

• Fructose

• Ribose

• Glucose

Where is DNA primarily located within the cell?

• Ribosomes

• Endoplasmic Reticulum

• Nucleus

• Cytosol

Which of the following is true about the location of RNA in the cell?

• RNA is only found in the nucleus.

• RNA is primarily found in the cytosol and ribosomes.

• RNA is only found in the mitochondria.

• RNA is found in the endoplasmic reticulum.

Which nitrogenous base is found in RNA but not in DNA?

• Cytosine

• Uracil

• Adenine

• Guanine

Which nitrogenous base is found in DNA but not in RNA?

• Uracil

• Guanine

• Thymine

• Adenine

How many nitrogenous bases does DNA have?

• Five

• Six

• Three

• Four