DNA Replication

To understand DNA replication, we need to understand the “why.” Why does DNA need to replicate before cells divide?

• Cells need to have 2 copies before the cell divides in case 1 of them dies
• Cells need to have 2 copies before it divides so that each cell gets a complete copy
• Cells need to have 2 copies- 1 from the mom + 1 from the dad
• Cells need to have 2 copies - 1 to make proteins and one to make carbohydrates

In the DNA diagram below, label A.

• deoxyribose (sugar)
• nitrogenous base
• hydrogen bond
• phosphate

In the DNA diagram below, label B.

• deoxyribose (sugar)
• nitrogenous base
• hydrogen bond
• phosphate

In the DNA diagram below, label C.

• deoxyribose (sugar)
• nitrogenous base
• hydrogen bond
• phosphate

In the DNA diagram below, label D.

• deoxyribose (sugar)
• nitrogenous base
• hydrogen bond
• phosphate

How many total DEOXYRIBOSE (SUGARS) are included in the DNA diagram below?

• 6
• 3
• 11

How many total NITROGENOUS BASES are included in the DNA diagram below?

• 6
• 3
• 11

How many total NUCLEOTIDES are included in the DNA diagram below?

• 6
• 3
• 11

DNA Replication has many key players! What is the function (job) of HELICASE in DNA Replication?

• tells polymerase where to start
• adds RNA bases
• unwinds DNA
• zips DNA back up

DNA Replication has many key players! What is the function (job) of DNA POLYMERASE in DNA Replication?

• tells polymerase where to start
• adds DNA bases
• unwinds DNA
• zips DNA back up