Test Bank -Human Physiology An Integrated
Approach Update, All Chapters, Complete Latest
Version.
_____ _________ have atoms that share electrons unevenly. - ANSWER-Polar Molecules
.________ _____ form when adjacent atoms share one or more pairs of electrons. - ANSWER-Covalent
bonds
.4 Levels to a Protein - ANSWER-Primary Structure (sequence of amino acids), Secondary Structure
(alpha helix & beta-pleated sheets), Tertiary Structure (chains fold), & Quarternary Structure
.7 types - ANSWER-1 - Enzymes - speed up chemical reactions; important in metabolism;
2 - Membrane Transporters - help move substances back and forth b/t intra & extra - cellular
compartments by: forming channels & binding to molecules & carrying them thru the membrane;
3 - Signal Molecules;
4 - Receptors - bind signal molecules & initiate cellular responses;
5 - Binding Proteins - (found mostly in extracellular fluid) bind and transport molecules throughout the
body - eg: hemoglobin & LDL
6 - Immunoglobins - (also called antibodies) help protect the body
7 - Regulatory Proteins - turn cell processes on and off or up or down.
.At times, the inactive protein needs an attachment, or covering for it to activate and ligands to bind
with it. - ANSWER-Cofactor
.attraction of a ligand to a protein - ANSWER-affinity
Approach Update, All Chapters, Complete Latest
Version.
_____ _________ have atoms that share electrons unevenly. - ANSWER-Polar Molecules
.________ _____ form when adjacent atoms share one or more pairs of electrons. - ANSWER-Covalent
bonds
.4 Levels to a Protein - ANSWER-Primary Structure (sequence of amino acids), Secondary Structure
(alpha helix & beta-pleated sheets), Tertiary Structure (chains fold), & Quarternary Structure
.7 types - ANSWER-1 - Enzymes - speed up chemical reactions; important in metabolism;
2 - Membrane Transporters - help move substances back and forth b/t intra & extra - cellular
compartments by: forming channels & binding to molecules & carrying them thru the membrane;
3 - Signal Molecules;
4 - Receptors - bind signal molecules & initiate cellular responses;
5 - Binding Proteins - (found mostly in extracellular fluid) bind and transport molecules throughout the
body - eg: hemoglobin & LDL
6 - Immunoglobins - (also called antibodies) help protect the body
7 - Regulatory Proteins - turn cell processes on and off or up or down.
.At times, the inactive protein needs an attachment, or covering for it to activate and ligands to bind
with it. - ANSWER-Cofactor
.attraction of a ligand to a protein - ANSWER-affinity
