Ch 2 Flashcards
Which of the following best summarizes the relationship between dehydration reaction and hydrolysis
Both are correct
Glandular organs such as the pancreas and salivary gland produce a large quantity of enzymes used by the body on a daily basis. Cells of these organs would be expected to contain a large quantity of which organelle?
Ribosomes
Describes interactions by an enzyme that is capable of either activating or inhibiting an enzymatic reaction
Allosteric interactions
Which two functional groups are always found in amino acids?
carboxyl and amine
Enzymes are
Proteins
If ATP breakdown is inhibited, which of the types of movement across cell membranes is also inhibited
Passage of a solute against its concentration gradient
When a cell has a large surface area to volume ratio, what is the effects on its function
Faster rate of cell division
The functionality of a protein is determined by its shape when it is in its native conformation. The native conformation of a protein is determined by the set of amino acids that compose the protein’s sequence. A certain protein consists of 325 amino acids. What would be the result if one of the amino acids in this protein were changed?
The primary structure, tertiary structure and the biological function would all be altered
During a laboratory experiment, you discover that an enzume-catalyzed reaction has a G of -20 kcal/m. If you double the amount of enzyme in the reaction, what will be the G for the new reaction?
-20 kal/ nol
Liver cells are specialized cells that synthesize cholesterol and breakdown proteins. These cells would be expected to contain a large proportion of which organelle relative to all others?
Smooth ER
A reversible inhibitor that looks similar to the normal substrate and competes for the active site of the enzyme.
Competitive inhibitor
Specialized cells produce the hormone epinephrine (protein) and store in vesicles. To release epinephrine these vesicles are carried to the plasma membrane and fuse with it. Which cellular organelles are involved in this process?
rough ER, golgi body, vesicle
The process by which a metabolic pathway is shut off by the product it produces.
Feedback inhibition
Which of the following best describes the function of the double membrane system found in the mitochondria?
Inner membrane has specialized proteins that create a hydrogen ion concentration gradient between the intermembrane space
