Gene Expression and Regulation Quiz

What is the BIG IDEA emphasized in Unit 5: Gene Expression and Regulation?

• The structure of proteins is determined by the function they carry out in life.

• The composition of DNA determines the structure of proteins that carry out the various functions of life.

• The nucleus is the only important component in gene expression and regulation.

• Histones are the most important proteins for the structure of DNA.

What are chromosomes made of according to the notes?

• Lipids and proteins

• DNA wrapped around proteins called histones

• RNA and histones

• Proteins only

What are identical copies of chromosomes called?

• Genes

• Histones

• Chromatids

• Centromeres

According to Chargaff's rules, which of the following base pairs is correct?

• Adenine (A) pairs with Guanine (G)

• Cytosine (C) pairs with Thymine (T)

• Adenine (A) pairs with Thymine (T)

• Guanine (G) pairs with Adenine (A)

If Adenine makes up 16% of the DNA sample, what percentage of the sample does Thymine make up according to Chargaff's rules?

• 16%

• 32%

• 34%

• 68%

What holds sister chromatids together?

• Genes

• Histones

• Chromosomes

• Centromeres

What significant contribution did Rosalind Franklin make to the study of DNA?

• She created the first accurate DNA model.

• She discovered the double helix structure of DNA.

• She took an X-ray diffraction photo that was crucial in understanding DNA's structure.

• She was awarded the Nobel Prize for her work on DNA.

What is the shape of the DNA structure according to the model created by Watson and Crick?

• Single helix

• Double helix

• Triple helix

• Quadruple helix

Which of the following is true about the nucleotides in DNA?

• A DNA nucleotide consists of a sugar, a phosphate, and a nitrogen base.

• A DNA nucleotide consists only of a phosphate and a nitrogen base.

• A DNA nucleotide consists only of a sugar and a nitrogen base.

• A DNA nucleotide consists only of a sugar and a phosphate.

According to Chargaff's Rule, which of the following is a correct pairing of Nitrogen Bases in DNA?

• Adenine pairs with Cytosine.

• Guanine pairs with Thymine.

• Adenine always pairs with Thymine.

• Cytosine always pairs with Adenine.