DNA Replication and Cell Cycle

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

• deoxyribose sugar and adenine

• deoxyribose sugar and a hydrogen bond

• deoxyribose sugar and the nucleus

• deoxyribose sugar and phosphate

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA

• TTAGTACCT

• UUAGUACCU

• GGATAUCUA

DNA replication results in two DNA molecules,

• each one with two original strands

• each one with two new strands

• each one with one new strand and one original strand

• one with two new strands and the other with two original strands

The drawing shows the structure of what molecule?

• DNA molecule

• lipid molecule

• carbohydrate molecule

• protein molecule

Tags

NGSS.HS-LS1-1

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine

• guanine

• thymine

• uracil

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base

• sugar, oxygen, nitrogen base

• sugar, phosphate, nitrogen base

• sugar, phosphate, protein

In the S stage of interphase_______________

• the cell grows

• the nucleus divides

• the cell membrane divides

• the DNA is replicated

DNA replication is semi-conservative, resulting in two DNA molecules...

• each one with two original strands

• each one with two new strands

• each one with one new strand and one original strand

• one with two new strands and the other with two original strands

Sometimes, DNA is called "semi-conservative." Why might this be?

• The old strand is "conserved" and used to make the new strands

• Uracil is "conserved" in that it is only used to make the new strands

• ATP is "conserved" via the usage of facilitated diffusion

• Ligase is "conserved" in that it is denatured by the process

Tags

NGSS.HS-LS1-1