Gen Bio Chp 5 Quiz
the figure below reflects how these two cells would respond in a_____________ enviroment
hypertonic
Where within the cell is ATP built up?
mitochondria
a white blood cells surrounds and engulfs a worn-out red blood cell, forming a vesicle around the red blood cell. This process is called
phagocytosis
the opposite of a turgid plant cell is a
plasmolyzed plant cell
which of the following is not a type of potential energy
the energy of a ball rolling down a hill
Once the substrate moves into the active site of the enzyme
the enzyme alters in shape to more closely fit the substrate
in the set-up shown below, which of the following statements would describe what would be observed after 12 hours of time has elasped
the level of solution in the tube would rise because there are now more dissolved solutes in the tube than the beaker
in feedback inhibition of a metabolic pathway, where does the inhibitor bind
to the enzyme of the first reaction
which of the following statements most accurately describes the first law of thermodynamics
energy cannot be created or destroyed
What process typically regulates the enzymes involved in metabolic reactions?
feedback inhibition
molecules move from greater to lesser concentration through a transport protein in
facilitated diffusion
Enzymes are able to speed up the rate of a reaction by
lowering the energy needed for the reaction to proceed
Pickles are often preserved in a 20-30% salt solution called brine. How does this method prevent contamination by microorganisms?
bacteria can´t survive in a hypertonic solution because they lost water
When neurons release their neurotransmitters... What type of cellular transport is occurring as the vesicle forms and then surfaces on the cell's plasma membrane?
exocytosis
the concentration of a calcium cell is 3%. The concentration of calcium in the surrounding fluid is 1%. How could the cell obtain more calcium?
active transport
which is an example of potential rather than kinetic energy
an apple made up of energy-rich macromolecules
osmosis includes
both the diffusion of water and a semi-permeable membrane
simple diffusion across a plasma membrane is called passive transport because it
does not require energy from the cell
the part of the enzyme into which the substrate fits is called the
active site
Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities?
ATP
which of the areas shown in the figure below indicates the presence of an enzyme in the movement of reactant over the product
C
which of the following is an example of osmosis
Cells of our kidneys reabsorb water to prevent it from all leaving through our urine.
ATP releases energy when
a phosphate is removed
which of the following statements reflects what occurs in the flow of energy conversions through living systems
chloroplasts convert solar energy to the chemical energy of nutrient molecules
which of the following terms best describes entropy
disorder
Why do metabolic pathways require tens to hundreds of different enzymes?
each enzyme has a specific substrate and produces a specific product
When a car burns gasoline, much of the energy is in the form of heat as the car is driven. Which of the following best describes this in relation to the first law of thermodynamics?
energy can be changed from one form to another
which statement most accurately describes the second law of thermodynamics
energy cannot be changed from one form to another without a loss of unstable energy
in what function do the embedded membrane proteins at "c" serve
facilitated and active transport
energy of activation
is the energy required for molecules to react with each other
The changing of an enzyme's shape as the substrate binds to the active site is called the
induced fit model
When a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called
isotonic
In the set-up shown in the figure below, which process allows the water to move across the membrane?
osmosis
which of the following is a by product of photosynthesis that is used during cellular respiration
oxygen
which of the types of cellular activities listed below would not use ATP
passive transport
the second law of thermodynamics states that all energy... how can photosynthesis take more disordered carbon dioxide and water and convert them into glucose which is more ordered
solar energy is being added to the reaction to create glucose
which of the following shows the flow of energy at the cellular level through the biosphere
solar energy-chloroplast-mitochondira
what is the biological risk of using salt on icy roads
the salt has the risk of leeching into the ground and creating a hypertonic environment for plant cells
which of the following enables a cell to pick up and concentrate a specific type of molecule
receptor-mediated endocytosis
when a plotted house plant is wilting... this can be accounted for by which of the following statements
the water creates a hypotonic environment causing the cells to gain water
Which energy association is correct?
Kinetic energy is the energy of motion.
the figure below represents a metabolic pathway, what happens if Enzyme2 is defective and nonfunctional
Substrate Y would not be metabolized