Discovering Dna Structure

Question 1

What are the four nitrogen bases ?

Answer 1

Guanine —–3H+—cytosine

Adosine —-2+—-Thymine

Question 2

Ladder and sides of DNA

Answer 2

Dioxyribose

And phosphate

Question 3

The steps or rungs of DNA

Answer 3

Are made up of nitrogenous bases held together by H+ bonds

Question 4

Define the term telomere?

Answer 4

DNA chain of chemical code made of the 4 bases
Protect our genetic data make it possible for cells to divide
(Like the plastic part on the end of a shoelace)

Question 5

Telomerase

Answer 5

Adds bases to the end of telomeres in young cells, keeps telomeres from wearing down.
As cells divides repeatedly there is not enough telomerase so the telomeres grow shorter and the cells age.

Question 6

How is telomerase related to cancer?

Answer 6

• Cell becomes cancerous and divided more often and the telomeres became very short
• to prevent this a cell can become cancerous then activate telomerase which prevents telomeres from getting shorter

Question 7

How might telomerase be used to slow the aging process?

Answer 7

Extend lifespan of DNA by preserving or restoring the length of telomers with telomerase

Question 8

What makes DNA

Answer 8

Deoxyribose
Nitrogen base
Phosphate

Question 9

What is oxidative stress? What is glycation?

Answer 9

Factors of aging

Oxidative stress= damage to DNA, proteins, and lipids caused by oxidants

Glycation= happens when glucose sugar from food binds to some of our DNA, proteins, and lipids. Leaving them unable to do there jobs