What is DNA and How Does it Work?

The video uses a library analogy to explain DNA's role in cells. DNA is a large molecule made of nucleotides, forming a double helix structure. It acts as an instruction manual for protein synthesis, with mRNA serving as a messenger to ribosomes, where proteins are built. The human genome consists of 3 billion bases, with 99% similarity among individuals. Ongoing research in DNA and genetic engineering holds potential for future scientific advancements.

What is the primary function of DNA in a cell?

• To transport nutrients

• To provide structural support

• To act as an instruction manual for protein synthesis

• To store energy

Which of the following pairs correctly represents the base pairing in DNA?

• Adenine with Cytosine

• Guanine with Thymine

• Adenine with Thymine

• Cytosine with Adenine

What is the role of mRNA in protein synthesis?

• To form the structure of ribosomes

• To carry genetic information from DNA to ribosomes

• To replicate DNA

• To transport amino acids

Where does the process of protein synthesis occur within the cell?

• In the cell membrane

• In the mitochondria

• In the ribosomes

• In the nucleus

What is the complete set of DNA instructions in a human called?

• Codon

• Gene

• Genome

• Chromosome

What percentage of the human genome is identical across all humans?

• 100%

• 99%

• 75%

• 50%

What is the significance of the remaining 1% of the human genome?

• It controls cell division

• It is responsible for aging

• It makes each individual unique

• It determines our energy levels