week 2) Nucleic Acids Flashcards
1
Q
Structure of nucleotide monomer
A
the sugar is deoxyribose in DNA or ribose in RNA
2
Q
Nucleic Acid polymer have
A
polarity
3
Q
Nitrogenous base includes
A
purines: Adenine and guanine
pyrimidines: thymine, cytosine, uracil (remember C U T Py)
4
Q
nucleotides connected by
A
phosphodiester bonds
5
Q
Comparing DNA and RNA
A
- DNA encodes information for amino acid sequence of proteins
- the DNA double hellix
- 2 polynucleotide strands connected by hydrogen bonds
- base paring rules:
- A with T (2H-bonds)
- C with G (3H-bonds)
6
Q
RNA
A
- similar to DNA except:
- contains ribose instead of deoxyribose
- uracil instead of thymine
- single pollynucleotide strand
- RNA uses information in DNA to specify sequence of amino acids in proteins
7
Q
Proteins
A
- Enzyme catalysis
- Defense(antibodies)- produce by inmune system
- transport- hemoglobis transport oxygen
- structural support-
- Motion- ex: sperm cells
- Regulation
8
Q
Proteins
A
- polymers of amno acid monomers
- composed of 1 or more unbranched chains
- each chain is a polypeptide
9
Q
Amino acid structure
A
- central carbon atom
- amino group
- carbocyl group
- single hydrogen
- variable R group
10
Q
Types of amino acids
A
- Nonpolar, polar, charged
- atomatic vs non aromatic
- special function
11
Q
Peptide bond
A
- A mino acids are joined by dehydration synthesis
- peptide bond formation
