DNA and Protein Synthesis

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Name this structure

• double helix

• nucelotide

• twisted ladder

• hydrogen bond

Which 2 molecules forms the sides (backbone) of the DNA ladder?

• deoxyribose and adenine
• deoxyribose and a hydrogen bond
• sugar and the nucleus
• deoxyribose (sugar) and phosphate

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

A ______________ is any change in the DNA of a gene or chromosome.

• differentiation

• mutation

• cancer

Which process and product are represented in the diagram below?

• Process transcription; product DNA

• Process translation; product tRNA

• Process transcription; product mRNA

• Process translation; product mRNA

Which process and product are represented in the diagram?

• process translation; product mRNA

• Process transcription; product protein

• Process transcription; product mRNA

• Process translation; product protein

The Himalayan rabbit's habitat has cold, snowy winters and mild summers. The body is typically covered in white fur except for the nose, feet, tail, and ears, which are covered in black fur. A scientist shaved an area of white fur on the back of a Himalayan rabbit and placed an ice pack over the shaved area. The shaved are grew black fur. Which of these best explains why the hair that grew back where the ice pack was placed was black and not white?

• the genes for black hair were activated by specific temperatures

• the white hair mutated to black hair as the rabbit's body temperature decreased.

• the coat color changed from white to black with the age of the rabbit

• white hair only grows during certain times of the year

Human bone, muscle, and nerve cells all contain the same number of chromosomes with the same complement of genes. What enables these cells to perform specialized activities?

• the ability of some cells to remove unnecessary DNA sequences

• the regulation of gene expression within each cell type

• the mutation of genes within each cell type

• the use of different methods of cell division

A mutation in which types of cells would only affect the organism and not future generations?

• egg cell and liver cell

• sperm cell and egg cell

• nerve cell and brain cell

• sperm cell and lung cell