Download Exam 2 | BIO 324 - Cell Biology and more Quizzes Cell Biology in PDF only on Docsity!
Membrane proteins function in receiving what? Receiving extracellular signals TERM 2 The final electron acceptor in the elec. transport chain of cellular respiration is? DEFINITION 2 Oxygen TERM 3 The electron carrier NADH provides enough energy in trans. elec.'s to produce __# of ATP? DEFINITION 3 3 molecules of ATP TERM 4 Electron carrier FADH2 provides enough energy in trans. elec.'s to produce __# of ATP molecules? DEFINITION 4 2 Molecules of ATP TERM 5 When transporting large, polar, uncharged molecules across a membrane, what are 3 true things? (think Gibbs free E) DEFINITION 5 1.) Keq is always equal to one 2.) Movement requires a transport protein 3.) Delta G' is always equal to zero
What is the NET YEILD of the TCA cycle when one molecule of acetyl CoA enters the cycle? 3 NADH, 1 FADH2, 1 ATP TERM 7 The breakdown of glucose to pyruvate is an example of a(n) ______ reaction? DEFINITION 7 Catabolic TERM 8 Movement of water thru a semi-permeable membrane, from High to low conc. is known as? DEFINITION 8 Osmosis TERM 9 In elec. trans, which respiratory complex ISNT involved in the flow of elec.'s from NADH? DEFINITION 9 Complex II (complex 2) TERM 10 Where would Glycosylation of proteins most likely occur? DEFINITION 10 In the Golgi Complex
Integral membrane proteins contain what 2 important charac. within the membrane spanning portion of the protein? 1.) Alpha-helices 2.)Hydrophobic R Groups TERM 17 Active Transport DEFINITION 17 Active transport is the movement of a substance against its concentration gradient (from low to high concentration). TERM 18 The current model of understanding of the membranes of the cell is based on the? DEFINITION 18 Fluid Mosaic Model TERM 19 The TCA cycle occurs in the _________ of a eukaryotic cell. DEFINITION 19 Mitochondria TERM 20 How does the regulator ATP effect the pathway Glycolysis? DEFINITION 20 Inhibits
How does the regulator AMP effect the pathway Gluconeogenesis? Inhibits TERM 22 How does the regulator NADH effect the pathway TCA Cycle? DEFINITION 22 Inhibits TERM 23 How does the regulator Insulin effect the pathway Glycolysis? DEFINITION 23 Activates TERM 24 How does the regulator Glucagon effect the pathway Glycolysis? DEFINITION 24 Inhibits TERM 25 What are the 3 enzymes in the irreversible rxns of the Glycolytic Pathway? DEFINITION 25 1.) Hexokinase 2.) Phosphofructokinase 3.) Pyruvate Kinase
What are the 2 products of the irreversible rxn with Pyruvate Kinase? ADP + H+ --------> ATP TERM 32 What are the 3 types of facilitated transport proteins plus their abundance & direction? DEFINITION 32 1.) Uniporter - 1 molecule/ 1 direction 2.) Symporter - 2 molecules/ 1 direction 3.) Amiporter - 2 molecules/ 2 directions TERM 33 What is an example of a Uniporter? DEFINITION 33 Ca2+ pump TERM 34 What is an example of a symporter? DEFINITION 34 Na+ and/or glucose co-transporters TERM 35 What is an example of an Amiporter? DEFINITION 35 Na+/K+ pump
Name 4 main functions of membranes... 1.) Define cell boundaries 2.) Compartmentalization 3.) Regulation of transport 4.) Cell-Cell communication TERM 37 Catabolic = breakdown and Amphibolic = ???? DEFINITION 37 Build up TERM 38 What is often referred to as the 'powerhouse' of the cell? DEFINITION 38 Mitochondria TERM 39 What is the technique allowing various proteins to be differentiated based on size,once denatured? DEFINITION 39 SDS - PAGE TERM 40 Glycolysis occurs in the _________ of a eukaryotic cell. DEFINITION 40 Cytoplasm
