BSI EXAM 1 Flashcards
What helps the protein from being degraded by enzymes?
Glycosylation
What is phagocytosis?
Phagocytosis is the process by which bacteria, dead tissue, or other bits oif microscopic material are engulfed by cells
Pair of Centrioles and Pericentriolar material is called the ______
Centrosome
What is autophagy?
Autophagy is controlled digestion of damaged organelles within a cell.
This contains digestive enzymes.
Lysosomes
This is made up of cylindrical array of microtubules.
Centrioles
Glycosylation
Adding of a sugar group to the protein.
Trans face of the Golgi Apparatus faces the ER. T or F?
FALSE, The CIS face, faces the ER
Glycosylation usually happens with membrane proteins and __________.
Lipids
What is the mitotic spindle?
The mitotic spindle is the macromolecular machine that segregates chromosomes to two daughter cells during mitosis. It is made up of microtubule polymers.
Gln192 is a __ residue located 192 amino acids from the __ terminus
Glutamine; N
which of the following pairs of aa can form an ionic bond with each other
a) Lys and Glu
b) Ser and Arg
c) Gln and Lys
D) Pro and Cys
a)
What functional group is the “N-terminus”?
Amino group
If you add a chemical that breaks a noncovalent bond, what structural level is affected?
Secondary, tertiary, quaternary
Name the 10 amino acid with nonpolar side chain.
Alanine (Ala), Glycine (Gly), Valine (Val), Leucine (Leu), Isoleucine (Lle), Proline (Pro), Phenylalanine (Phe), Methionine (Met), Tryptophan (Trp), Cysteine (Cys)
T or F; Reduced form has a disulfide bond.
False, Oxidized form has disulfide bonds.
Which structures are determined by unique amino acid sequence?
Tertiary and quaternary
What are the 4 amino acids that does NOT start with the first 3 letters of their name?
Asparagine (Asn), Glutamine (Gln), Isoleucine (Ile), Tryptophan (Trp)
Which 3 amino acid contains an OH group that can be phosphorylated?
Serine (Ser), Threonine (Thr), Tyrosine (Tyr)
N-terminus, is that the beginning or the end of the protein?
Beginning
(Ser-Gln-Asn) and (Leu-Phe-Gsy), which one is more likely to be a membrane protein and why?
Leu-Phe-Gsy because it’s nonpolar and prefer membrane environment.
What functional group is the “C-terminus”?
Carboxyl Group
Adding a chemical solution to denature a protein that is in its functional quarternary structure as a heterodimer. The protein does not contain cysteine. The chemical solution interferes with noncovalent bonds. In what form would you most likely predict the protein to end up.
As two separate polypeptide chains with no secondary or tertiary structure.
T or F? A protein can only have one function
False, proteins can have multiple domains.