BIOL 3301 EXAM QUESTIONS AND ANSWERS LATEST UPDATE (GRADED A+)

BIOL 3301 EXAM QUESTIONS AND ANSWERS
LATEST UPDATE (GRADED A+)
DNA is composed of...

-Phosphate group at 5' position
-Nitrogenous (Adenine, A)
-Deoxyribose Sugar
-Deoxy= H in position 2'
-OH group at 3' position
-Deoxyadenosine 5'-monophosphate (dAMP)

DNA structure must accommodate the three key properties of DNA

1. Ability to self replicate
2. Ability to encode heritable traits
3. Ability to generate alternate alleles that slightly alter the traits

DNA consisted of..

Nucleotides, a phosphate backbone, and Ribose

The structure of DNA

-Is a double helix
-Two strands are anti-parallel
-Two strands held together by complementary base pairing through non-covalent weak hydrogen bonds
-Have paired nucleotides

In two strands of DNA being anti-parallel

Two sugar-phosphate backbones are in opposite orientation

DNA backbone consists of

-Alternating deoxyribose sugars and phosphates
-Connected through phosphodiesterase bonds.

Helicase

-Unzips the double helix
-Result in replication fork

Primase

Produces RNA primers

Single Strand Binding Proteins

-Bind to the single-stranded DNA and prevent it from reannealing
-DNA strands would not stay separated