Biochemistry Questions

In the movement of small molecules across a lipid bilayer, the permeability coefficient can be correlated with

Which amino acid can act as a proton donor and acceptor?

In what pH range is alanine present in its zwitterionic form? PK1=2.34 PK2=9.69

During protein folding in which part of a protein are Trp and Phe located and why?

Complete this statement: The furanose form of fructose is generated by formation of a hemiketal involving the attack of the C‑__ hydroxyl group on the C‑__ ketone.

What tripeptide contains an amino acid with an -SH group?

Which amino acid contains a guanidinium functional group?

What is approximate molecular weight of a protein composed of 300 amino acids?

PK1 and PK2 are 2.6 and 9.6 respectively. The PI is

Glucose yields a positive test with cupric ions, such as those of Fehling's solution, but sucrose does not because

The most common way in which integral membrane proteins span the membrane is in

Glycoproteins are proteins to which carbohydrates have been covalently attached.The amino acid R groups that serve as sites for O‑linkages in glycoproteins include

Identify the catalytic cofactors of the pyruvate dehydrogenase complex.

Select the amino acids that attach carbohydrates to proteins.

Although ATP is the major energy currency in the cell, the nucleoside triphosphates UTP, CTP, and GTP are also used in some reactions.UTP, CTP, and GTP are produced from their corresponding mono‑ and diphosphates by

In the reaction catalyzed by the pyruvate dehydrogenase complex, the two carbons constituting the acetyl group are

Which enzyme or enzyme complex is similar to the pyruvate dehydrogenase complex?

What material in vertebrate muscle serves as a reservoir for high‑energy phosphate groups?

The energy for the phosphorylation of ADP to ATP can come from either molecules with a higher phosphoryl‑transfer potential or from

Which enzyme of the citric acid cycle is not a freely soluble enzyme?