Understanding DNA and RNA

What is the primary function of DNA in the body?

• To transport oxygen

• To store fat

• To give instructions for body functions

• To provide energy

Which of the following is NOT a nucleotide found in DNA?

• Guanine

• Adenine

• Thymine

• Uracil

How does RNA differ from DNA in terms of structure?

• RNA is double-stranded

• RNA contains thymine

• RNA is single-stranded

• RNA has a deoxy prefix

Approximately how many nucleotides are in the human genome?

• 300 million

• 30 billion

• 3 billion

• 3 million

What percentage of human DNA is thought to code for proteins?

• 50%

• 100%

• 30%

• 3%

What is the term for a tightly wound bundle of DNA and proteins?

• Gene

• Chromatin

• Genome

• Nucleotide

How many pairs of chromosomes do humans have?

• 24

• 23

• 46

• 22

What is the haploid number of chromosomes in humans?

• 24

• 23

• 46

• 22

Which animal has the highest number of chromosome pairs?

• Potato plant

• Atlas blue butterfly

• Chicken

• Dog

What process will be discussed in the next lesson?

• Gene expression

• Protein synthesis

• DNA replication

• Cell division