GCSE Biology - DNA Part 1 - Genes and the Genome #63

The video tutorial explains the structure and function of DNA, chromosomes, genes, and genomes. It covers how DNA forms a double helix and is organized into chromosomes, which are crucial for cell division. The tutorial also describes how genes code for proteins, influencing cell function. Finally, it discusses the concept of the genome, its role in understanding diseases, and tracing human ancestry.

What is the primary structure of DNA?

• Quadruple helix

• Single helix

• Double helix

• Triple helix

How many chromosomes are typically found in a human cell?

• 23

• 46

• 69

• 92

What makes the 23rd pair of chromosomes unique?

• They are responsible for blood type

• They are the sex chromosomes

• They determine eye color

• They are the largest chromosomes

What is a gene primarily responsible for?

• Regulating body temperature

• Determining cell size

• Producing energy

• Coding for a specific protein

How many different types of amino acids are there?

• 10

• 20

• 30

• 40

What does the term 'genome' refer to?

• A group of proteins

• A pair of chromosomes

• A single gene

• The entire set of genetic material in an organism

How can genomes help in understanding human history?

• By predicting future events

• By tracing the migrations of ancestors

• By identifying favorite foods

• By determining eye color