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