lecture 5
indicate whether the following statements are true or false. if a statement is false, explain why it is false. A.The amino acids in the interior of a protein do not interact with the ligand and do not play a role in selective binding. B.Antibodies are Y-shaped and are composed of six different polypeptide chains. C.ATPases generate ATP for the cell D. Hexokinase recognizes and phosphorylates only one of the glucose stereoisomers
A. false - they do B. false - composed of four C. false - break down D. true
antibodies are made by a class of white blood cells called __ _________.
B cells
________________ _____________________ is a method of separating biochemical mixture based on a highly specific interaction between antigen and antibody, enzyme and substrate, receptor and ligand, or protein and nucleic acid.
affinity chromatography
________________ defend us against infection
antibodies
a protein molecule's physical interaction with other molecules determines its __________________ ___________________.
biological properties
_________________ are small non protein molecules that perform functions that would be difficult or impossible to do with amino acids alone.
coenzymes
negative feedback ______________ production.
decrease
________________ are powerful and highly specific catalysts.
enzymes
the regulation of enzyme activity by other molecules is known as ____________ _______________.
feedback regulation
_________________________ is the technique of precipitating a protein antigen out of solution using an antibody that specifically binds to that particular protein.
immunoprecipitation (IP)
positive feedback _____________ production.
increase
the substance that is bound by the protein is referred to as a ___________ for that protein.
ligand