chapter 5 Flashcards
(20 cards)
Energy in action is called:
kinetic energy
Which type of energy is difficult to capture and use?
heat energy
Energy conversions always do what?
increase entropy
Cells use ______ to power their reactions.
ATP
The synthesis of ATP from ADP and P is an exergonic reaction.
False
f
The energy of ATP is contained within:
P-P bonds
Which one of the following statements about enzymes is NOT true?
they raise the activation energy of reactions
Which one of the following conditions does not affect the rate at which an enzyme catalyses a reaction?
substrate size
Inorganic ions that are necessary for the function of some enzymes are called_________
cofactors
When an inhibitor binds to the allosteric site of an enzyme, this is known as ________ inhibition.
non-competitive
Which list of molecules below accurately reflects the primary composition of the plasma membrane?
phospholipids, proteins, cholesterol
Glycoproteins and __________ are found only on the outer side of the plasma membrane.
glycolipids
Which type of membrane protein helps carry molecules across the plasma membrane?
carrier proteins
Which one of the following molecules does not move in and out of cells by simple diffusion?
glucose
Which form of transport requires energy in the form of ATP?
active transport
Facilitated diffusion involves a ________ protein embedded in the plasma membrane.
carrier
carrier
carrier
An animal cell placed in a hypotonic solution will:
swell and burst
A plant cell placed in a hypotonic solution will:
swell to become very turgid
A hypertonic solution is one which:
contains more solutes than the solution it is compared to
When a cell ingests small molecules and some the liquid that surrounds it, this is called:
pinocytosis
