Proteins

Enzymes are biologically active

There are non amino group in proteins, what are they called?

What color is the hemoglobin when the heme/haem groups are combined with oxygen?

What color is the hemoglobin when the heme/haem groups do not have oxygen?

Fibrous proteins are soluble in water

A peptide bond is

Why is glycine very common in collagen?

When the temperature and altitude is low where is the oxygen molecule located? (Bohr's effect)

When the temperature and altitude is high where is the oxygen molecule located? (Bohr's effect)

When the pH is low where is the oxygen molecule located

When the pH is high where is the oxygen molecule located

Total number of amino acids involved in the protein synthesis of plants

The 3D structure of protein can be determined by

Disulfide bonds can be determined by

hemoglobin has which structure

Tertiary structure is mainatined by

alpha helix structure has how much amino acid residues/turn?

Fibrous proteins such as silk fibroin consists of polypeptide chains arranged in

Myoglobin is a protein with

What is the most common secondary structure

What are the two classification of proteins

the classification of proteins depends on

How many amino acids does insulin contain?

The first protein sequnced by Frederick Sanger

The structure of protein can be destroyed by which rays?

Which protein is most abundant in the animal world

What are the most diverse molecules in the cell

Amino acids are joined by

The repeating units of proteins are

The oxygen in the carboxylic group of an alpha helix structure bonds to where so that the helix structure form?

What bonds compose the 2 secondary structures?

What are the 2 shapes of secondary structure

What reaction happens whe you join amino acids together?

All proteins are enzymes and all enzymes are proteins

Proteins responsible for muscle contractions

Protein found in nails, hair, and surface of the skin

Protein that strengthens skin

Proteins found in blood

What is the nature of peptide bond

Which of the following is a 39-residue hormone of the anterior pituitary gland?

The average molecular weight of an amino acid residue in a protein is about

Which part of amino acid gives its uniquness?

Which of the followin is not the classified form of conjugated proteins

Unfolding of a protein can be termed as

Which of the following is not a factor responsible for the denaturation of proteins

Two chains of amino acids in an insulin molecule are held together by

tertiary conformation of proteins is maintained by 3 types of bonds namely ionic, hydrogen and...?

Identify the wrong statement

The 3D structure of proteins, folding and shaping is done by

Claeaving of peptide chain is done by

Which of the following is the correct order of sequencing

Edman degradation is used for

a coiled peptide chain held in place by hydrogen bonding between peptide bonds in the same chain is

A structure that has hydrogen bonds between polypeptide chains arranged side by side is

Which of the following is known as helix breakers

Secondary structure is defined by

Which of the following is a false statement

Fibroin is rich in

which of the following bonds are not involved in tertiary type of protein structure

Which of the following does not posses a quaternary structure

Which of the following is abundantly found in collagen

Which of the following is first determined as oligomer

Which of the following enzyme is secreted by the pancreas

Which of the following is false

Which of the followin forces is favorable for protein folding?

A process by which a protein structure assumes its functional shape or conformation is?

Process of protein folding does not depend on

Whhich of the following cannot denature a protein

Protein which play important roe in folding of proteins int 3D structure

contractile protein of a muscle is

which of the following contractile protein of skeletal muscle involve in ATPase activity?

the cross bridges involved in muscle contraction are located on the

Which of the following is false

The connective tissue that surrounds individual fibers is

Which of the following is an invagination of the muscle cell's sacrolemma

What configuration does L-amino acid have?

Isoleucine and threonine contain a third stereocenter. True of false?

Which amino acid has a secondary structure for its alpha amino group?

What type of amino acids do the 20 amino acids have

the alpha carbon of each amino acid is a sterocenter except for

Protein used as an artificial sweetener that is 200 times sweeter than sugar

what is the IUPAC name of aspartame

What protein is used to induce labor in pregnant women?

Protein that controls blood pressure by regulating contraction of smooth muscle

Proteins are polymorphic in how much percentage?

The linear sequence of amino acids joined together by peptide bonds is termed the secondary structure of the protein.

Molecules are bound to the column via specific interactions for a bound ligand. Once nonbinding proteins are removed, the protein of interest can be eluted.

Which of the following techniques is used to separate proteins based upon differences in their mass?

Hemoglobin and myoglobin are the two oxygen-binding proteins present in large multicellular organisms. Hemoglobin transports oxygen in the blood and is located in the leukocytes; myoglobin stores the oxygen in the muscles.

Collagen is the name given to a family of structurally related proteins that form strong insoluble fibers.

The heme prosthetic group consists of a protoporphyrin IX ring and a central Fe3+ atom which forms four bonds with the porphyrin ring.

All of the following statements describe characteristics of the peptide bond EXCEPT

All of the following statements about hydrogen bonds are true, except

When proteins denatured in sodium dodecyl sulfate (SDS) and mercaptoethanol are separated by electrophoresis,

A bond that contributes to forming the secondary structure of proteins but not the primary structure

Molecules with a specific charge are selectively bound to a column, separated from proteins that don’t bind, and then eluted.

The substitution of valine for glutamate at position 6 on the two β-chains in sickle cell hemoglobin causes all the following EXCEPT

A covalent bond that can be involved in forming the tertiary structure of proteins once they are synthesized

Hemoglobin has quaternary structure as it is made up of four polypeptide chains; two α-chains and two β-chains (α2β2), each with a heme prosthetic group.

Quaternary structure refers to the spatial arrangement of the polypeptide subunits and the nature of the interactions between them.

A decreased affinity of hemoglobin for oxygen may result from all the following except

Denaturation is brought about by ALL of the following EXCEPT:

Cyanogen bromide (CNBr) cleaves proteins

In comparing the secondary structure of proteins, it can be seen that all the following descriptions apply only to a β-sheet and not to an α-helix except

All the following statements describing protein structure are true except

A protein is a linear sequence of amino acids linked together by glycosidic bonds.

Which of the following states of hemoglobin (Hb) binds oxygen with the greatest affinity?

Which of the designations below best describes the relationship of subunits in the quaternary structure of adult hemoglobin?

Which one of the following statements correctly descries transport of oxygen by hemoglobin?

All the following are important in determination of the primary structure of a protein except

Which of the following techniques for purification of proteins can separate proteins by size?

Salting out with ammonium sulfate is based upon proteins interacting with other proteins via

Primary structure in a protein refers to the three-dimensional arrangement of all the amino acids in the polypeptide chain.

Molecules are separated based on its isoelectric points.

Which of the following techniques for purification of proteins can be made specific for a given protein?