Ch. 4 Panopto

How many phosphate groups are present in a molecule of ATP?

3

If a DNA sample were composed of 20% thymine, what would be the percentage of guanine?

30%

What sugar is found in DNA?

Deoxyribose

Dehydration reaction to make a phosphodiester linkage

Forms between 3' hydroxyl of one and 5' phosphate

What types of bonds are broken when complementary DNA strands are separated?

Hydrogen bonds

If an RNA sample were composed of 20% adenine, what would be the percentage of guanine?

It is impossible to determine from the information given

What does it mean to say that strands in a double helix are antiparallel?

They have opposite directionality, or polarity

The directionality of a nucleic acid strand arises from the fact that:

the two ends of the strand have different chemical groups

How many of the items listed are found in DNA?

-5 -Deoxyribose, adenine, cytosine, guanine, thymine

What type(s) of bonds hold together a single strand of DNA?

-Covalent bonds -Phosphodiester bonds

Base pairing

-G-C -A-T or U -Purines - Pyrimidines

What type(s) of bonds hold together the two strands of a DNA double helix?

-Hydrogen bonds

The molecule shown is

-RNA -Phosphate, sugar or base -2' sugar -Hydroxyl group -Ribose