Unit 4 7A

A sample of human DNA is made up of approximately 30% adenine. Based on this information, and the base pairing rules, approximately how much cytosine is found in human DNA?

• 10 percent

• 20 percent

• 30 percent

• 70 percent

When changes occur in a cell’s DNA, it leads to changes in the synthesis of —

• carbohydrates

• cytoplasm

• lipids

• proteins

Tags

NGSS.HS-LS1-1

A linear code of 3 sequential bases on one side of a DNA molecule is a/an —

• base pair

• codon

• amino acid

• gene

What significant role does DNA play in the formation and development of an organism?

• Encodes information

• Provides protection from disease

• Produces food material

• Releases energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Albumin is a protein that is secreted by liver cells and transported to the bloodstream. What factor most directly determines the amino acids that are combined to create albumin?

• The temperature of the cell when translation is taking place

• The number of chromosomes in a cell

• The sequence of nucleotides in DNA

• The amount of energy that is available in the cell

Tags

NGSS.HS-LS1-1

Which of the following nucleotide base sequences complements the section of DNA modeled above?

• 5' UTCGCA 3'

• 5' TTAGCG 3'

• 5' GCGATT 3'

• 5' TTUCGC 3'

A student used poster board to construct this model of a section of DNA. Which statement describes this model of DNA?

• The model is inaccurate because the base pairs are incorrect.

• The model is accurate because it contains correctly paired bases.

• The model is accurate because it shows each base splitting to form a double helix.

• The model is inaccurate because some typical bases in DNA are missing.

Tags

NGSS.HS-LS1-1

Differences in traits such as hair texture are determined by differences in —

• the location of sugar groups in DNA

• the sequence of nucleotides in DNA

• the number of nitrogenous bases in DNA

• the molecules attached to the phosphate in DNA

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The weak bonds between base pairs is a ___

• Covalent Bond

• Polar Bond

• Non Polar Bond

• Hydrogen

Which arrow is pointing to the sugar?