DNA Structure and Function Assessment

The video tutorial introduces students to genetics, focusing on DNA, genes, and chromosomes. It explains how genes influence traits, the structure and function of DNA, and the historical discoveries that led to our understanding of the double helix. The tutorial also covers DNA replication, the role of genes in protein synthesis, and genetic similarities between humans and other organisms. Finally, it discusses chromosomes and the central dogma of biology, which describes the process of turning DNA into proteins.

What role do genes play in our bodies?

• They influence our physical appearance and internal functions.

• They determine our blood type.

• They control our emotions.

• They are responsible for our immune system.

Which statement about DNA is true?

• DNA is only found in the brain cells.

• DNA is inherited from both parents.

• DNA is identical in all living organisms.

• DNA is the same for identical twins and fraternal twins.

Who first identified DNA?

• Francis Crick

• Friedrich Miescher

• Rosalind Franklin

• James Watson

What is the structure of DNA?

• A single helix

• A double helix

• A triple helix

• A quadruple helix

Which nitrogenous base pairs with adenine in DNA?

• Cytosine

• Guanine

• Thymine

• Uracil

What percentage of human DNA is similar to that of a chimpanzee?

• 60%

• 85%

• 99.9%

• 96%

What is the primary function of genes?

• To fight infections

• To store energy

• To transport oxygen

• To code for proteins

How many pairs of chromosomes do humans have?

• 22

• 23

• 24

• 25

What is the central dogma of molecular biology?

• DNA is converted into RNA, which is then converted into protein.

• Proteins are converted into DNA, which is then converted into RNA.

• RNA is converted into DNA, which is then converted into protein.

• Proteins are converted into RNA, which is then converted into DNA.

What is a karyotype?

• A segment of DNA

• A photograph of chromosomes arranged by size

• A type of cell division

• A type of protein