problem set 3

DNA and RNA are composed of building blocks called

• amino acids

• monosaccharides

• nucleotides

• phospholipids

Hydrogen bonds form the steps of the DNA ladder by

• joining sugar and phosphate

• joining sugar and nitrogen base

• joining nitrogen base

• joining phosphate and nitrogen bases

If there are 8 chromosomes in a cell that undergoes mitosis, it will have how many
chromosomes in the daughter cells

• 8

• 16

• 4

• 2

Tags

NGSS.HS-LS1-4

The DNA sequence 5’ ATGCATGC 3’ will pair with which of the following DNA strands?

• 3’ ATGCATGC 5

• 5’ TACGTACG 3

• 3’ UACGUACG 5

• 3’ TACGTACG 5

A _____ consists of a sequence of nucleotides and each one makes up a ______.

• chromosome : gene

• gene : chromosome

• genome: chromosome

• chromosome: genome

If a new strand of DNA has the nitrogen base sequence 5' ATTCGACGCTA 3’ what is the
template strand that created it

• 3' TAAGCTGCGAT 5’

• 3' UAAGCUGCGAU 5’

• 3’ ATCGCAGCTTA 5

• 3’ ATTCGACGCTA 5’

DNA backbones are joined with

• sugar-phosphate bonds

• nitrogen base bonds

• phosphate-bonds

• phosphate-nitrogen base bonds

The enzyme that unwinds DNA by breaking hydrogen bonds is

• helicase

• amylase

• DNA polymerase

• ligase

The enzyme that forms a new strand of DNA by adding nucleotides is

• amylase

• helices

• ligase

• DNA polymerase

One of two identical attached copies of a replicated chromosomes is called a

• centromere

• chromosome

• chromatin

• nucleosome