The DNA base pairs are

• adenine, thymine, cytosine, uracil

• adenine, uracil, cytosine, guanine

• uracil, thymine, cytosine, guanine

• adenine, thymine, cytosine, guanine

DNA stand for

• deoxyribonucleic acid

• ribonucleic acid

• nucleic acid

• acid

Which of the following is the complementary strand to this strand of DNA? ACGTGC

• ACGTGC

• TGCACG

• ACTGAT

• CATTAG

The other side of the strand ACTTAG is called a

• RNA strand

• an mRNA strand

• tRNA strand

• complementary strand

In DNA replication, the 2 strands compare to each other in that...

• there are 2 identical strands

• there are 4 identical strands

• there is one old strand and one new strand and they are the same

• there is one old strand and one new strand and they are different

What is this an image of?

• replication

• mitosis

• interphase

• protein synthesis

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-4

DNA looks like a twisted ladder, what are the rungs of the DNA ladder made of?

• phosphate groups

• nitrogen bases

• sugars

• deoxyribose

What is the backbone or side of the DNA ladder made of?

• sugar and phosphate molecules

• nitrogen bases

• hydrogen bonds

• base pairs

What kind of bond holds base pairs together?

• carbon

• sulfur

• sodium

• hydrogen

Why does DNA replication happen?

• so new cells can be made

• so DNA can be spliced (put together)

• so cells can die off quicker

• so DNA can make RNA