DNA Test Review

Because of the base pairing rule in DNA,

• the number of cytosine molecules is about equal to the number of guanine molecules.

• the number of cytosine molecules is greater than the number of guanine molecules.

• the number of cytosine molecules is about equal to the number of thymine molecules.

What subunits make up DNA molecules?

• amino acids

• nucleotides

• fatty acids

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

• The model is wrong because the base pairs are wrong.

• The model is correct because the bases are paired correctly.

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

Tags

NGSS.HS-LS1-1

Each strand of a DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. Which DNA strand is complementary to the one shown below?

• A G U G C U G C G C G U A

• T G T A G C T G C G C G T

• A C A T C G A C G C G C A

A model of DNA is shown below. The arrow indicates -

• sugar

• phosphate

• hydrogen bond

Tags

NGSS.HS-LS1-1

The molecule below is a(n)

• lipid

• nucleotide

• sugar molecule

The name of the sugar in DNA is –

• ribose

• pentose

• deoxyribose

The base pairing rule for DNA states that –

• guanine always pairs with adenine

• thymine always pairs with adenine

• cytosine always pairs with adenine

How would you describe the shape of DNA?

• tetrahedral

• flat ladder

• double helix

What is the function (job) of DNA?

• stores the genetic information for our traits

• recycles old cell parts

• makes ATP energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1