PBS 1.1.5e mastery check

DNA stands for ____.

• deoxyribonucleic acid

• deoxygenated acid

• dextrose nitrogen atom

• deoxyribonucleic atom

The building block (monomer) of DNA is a(n) ____.

• nitrogenous base

• deoxyribose sugar

• nucleotide

• phosphate group

DNA contains the bases of _____.

• ATCG

• ATCU

• AUCG

• ATUG

In DNA, A pairs with ____ and C pairs with ____.

• G, T

• T, G

• A, C

• C, A

A and G are both _______ (type of bases) because they have ____ rings.

• purines, 1

• purines, 2

• pyrimidines, 1

• pyrimidines, 2

The overall shape of DNA can be described as a _____.

• twisted circle

• single helix

• double helix

• spiral ellipse

What sequence of DNA bases would be opposite the following sequence in the other side of the double helix? (Hint: Match the nucleotide pairs. You did this when you created your DNA molecule.)

AATCATGGA

• AATCATGGA

• TTAGTACCT

• UUAGUACCU

• GGATAUCUA

What are the 3 parts of a nucleotide?

• sugar (deoxyribose, in DNA)

• phosphate

• nitrogenous base (A,C,T,or G in DNA)

• RNA

How many fragments resulted from the restriction enzyme digest (cut) in the picture?

• 1

• 2

• 3

• 4