Proteins

Question 1

what are the functions of proteins?

Answer 1

antibodies and complements proteins for defense, motor proteins for movements, Enzymes catalyze chemical reactions, Hormones act as signal senders from outside cells, structural proteins, and transport proteins for move substances.

Question 2

components of protein

Answer 2

Amino acids which are composed of the Amino group, R group or side chain, and carboxyl group.

Question 3

Protein contains how many amino acids?

Answer 3

contains 20 amino acids, monomers amino acids assemble into chains, and different R groups attached to each amino acid give it a unique chemistry function.

Question 4

how are polymers made?

Answer 4

Dehydration or condensation reaction, forms peptide bonds between C to N with the loss of water molecules resulting in new bonds formed.

Question 5

4 levels of protein structures

Answer 5

the unique sequence of amino acids, amino terminus(N-term)
Carboxyl terminus (C-term)

Question 6

protein structures

Answer 6

primary structure, a secondary structure composed of alpha helix and beta pleated sheet, tertiary structure folded, Quaternary structure highly folded and performs specific heavy duties. like 4 chains folded together to work in unison.

Question 7

Protein folding and function can be influenced by?

Answer 7

change in pH
changes in temperature
change in salt concentration
presence of reducing agents

Question 8

proteins structures fits for functions

Answer 8

eg enzymes are shaped specifically for certain substrates, round-shaped proteins to allow water molecules inside a cell.

Question 9

Nucleic acid and protein synthesis

Answer 9

synthesis of mRNA in the nucleus from the DNA, movement of mRNA into cytoplasm via nuclear pore to the ribosome, and synthesis of protein from the mRNA into polypeptides.