Amino Acd Protein Structure

Question 1

Name the moderately non-polar amino acids. Draw them

Answer 1

Glycine (Gly, G), proline (Pro, P), cysteine(Cys,C), tryptophan(Trp,W), tyrosine(Tyr Y)

Question 2

Name the polar but uncharged amino acids and draw them

Answer 2

Glutamine (Gln, Q) asparagine (Asn, N) threonine (Thr, T) serine (Ser, S)

Question 3

Name and draw the polar, positively charged amino acids

Answer 3

lysine(Lys, K), Histidine(His, H), Arganine(Arg, R)

Question 4

Name and draw the polar negatively charged amino acids

Answer 4

Glutamate (Glu, E), Asparate (Asp, D)

Question 5

Name the amino acids that are non-polar. Draw them

Answer 5

Alanine(Ala, A), valine(Val, V), leucine(Leu,L), isoleucine(Ile, I), phenylalanine(Phe, F), methionine(Met, M)

Question 6

What Are examples of small molecules

Answer 6

Sugars Amino acids Nucleotides Carboxylic acid derivatives

Question 7

What is the purpose of small molecules

Answer 7

They act as building blocks for macromolecules

Question 8

What are some examples of macromolecules ?

Answer 8

Proteins- chains of amino acids Polysaccharides- chains of simple sugars Nucleic acids - chains of nucleotides

Question 9

Is myoglobin a macromolecule or small molecule? What is its function

Answer 9

It’s a protein therefore it’s a macromolecule. Myoglobin stores O2 in muscle tissue

Question 10

What is the unit used for measuring protein size?

Answer 10

KiloDalton (kDa) 1 Dalton= 1g/mol 1kDa= 1000g/mol

Question 11

What type of bond links amino acids in a protein ?

Answer 11

Peptide bonds

Question 12

Each protein has…..?

Answer 12

-unique sequence of amino acids -a well defined size and structure

Question 13

What are some functions of proteins ?

Answer 13

-Catalyzing reactions (enzymes) -forming complex sub cellular structures

Question 14

What are some key features that every amino acid have ?

Answer 14

Amino group carboxylate group Side chain R

Question 15

What kind of reaction forms a peptide bond?

Answer 15

Condensation

Question 16

What is the term for a chain with many amino acids, usually a complete protein?

Answer 16

Polypeptide

Question 17

What is the term for a chain with few amino acids, usually a fragment of a protein ?

Answer 17

Oligopeptide

Question 18

What is the order of identifying Carbon atoms in an amino acid?

Answer 18

Alpha (central carbon), Beta, Gamma, delta, epsilon

Question 19

Name the very non-polar amino acids. Draw them

Answer 19

Alanine (Ala, A), Valine (Val,V), Leucine (Leu, L), Isoleucine (Ile,I), Methionine (Met, M), Phenyalanine (Phe, F)