APR cell Lab
Which of the following statements is correct regarding this animation?
A solute concentration of 0.9% is considered isotonic
Diffusion continues until...
Equilibrium is reached
All of the following are ways in which cells bring material to the inside of the plasma membrane except..
Exocytosis
Facilitated diffusion is similar to simple diffusion in that both processes...
Involve the movement of substances down their concentration gradients
Molecules that are dissolved in a solution are in constant random motions due to...
Kinetic energy
Which stage of mitosis is characterized by the formation of double-stranded chromosomes along the equator of the cell and microtubules attached to each sister chromatid?
Metaphase
Which of the following can be viewed as cellular "drinking"?
Pinocytosis
Endocytosis is a process by which the ____________ surrounds and engulfs large particles.
Plasma membrane
What specifically occurs when the phosphate is released from the inner surface of the membrane?
Potassium moves to the inside of the cell
The change in shape of the carrier protein that results from the sodium moving through the membrane allows...
Potassium to bind to the carrier protein
The four stages of mitosis, in order of occurrence, are
Prophase, Metaphase, anaphase,telophase
Which of the following is characterized by the binding of molecules to an extracellular protein, deepening of a coated pit, and eventual creation of a coated vesicle?
Receptor-mediated endocytosis
In the example shown in this animation...
Sodium is more highly concentrated in the extracellular fluid
The sodium-potassium pump is responsible for moving...
Sodium to the outside of the cell
In facilitated diffusion, molecules are transported across a membrane by...
Special carrier molecules
The rate of diffusion is affected by..
Temperature, size of molecules, and the incline of the concentration gradient
Diffusion is the.
Tendency of substances to move from areas of high concentration to low concentration
Which of the following statements below is true regarding interphase?
The cell continues to prepare for mitosis and cell division during the second gap phase (G2)
What is occurring during the process called crenation?
The cell is shriveling due to loss of water to the extracellular fluid (ECF)
If the solute concentration is higher in the extracellular fluid (ECF) than in the intracellular fluid (ICF) water will move...
To the outside of the cell
Osmosis is the movement of _______ through a selectively permeable membrane.
Water
Active transport requires the breakdown of ________ to move substances against their concentration gradients.
atp
The net movement of molecules down a concentration gradient is known as...
diffusion
A given carrier protein can bind to and transport several different types of molecules.
false
A hypotonic solution has a higher concentration of solutes than does a hypertonic solution.
false
Diffusion is not used to move substances through cell membranes.
false
Sugars can freely pass through the lipid bilayer of a cell.
false
When the osmotic concentrations of two solutions are equal, the solutions are said to be...
isotonic
Which stage of mitosis is characterized by the formation of double-stranded chromosomes along the equator of the cell and microtubules attached to each sister chromatid?
metaphase
Special carrier molecules are composed of...
protein
Which statement correctly describes the result of cytokinesis?
the Creation of two identical Daughter Cells
In facilitated diffusion, a given carrier protein can move a substance either into or out of the cell depending on its concentration gradient.
true
Phagocytosis can be thought of as cellular "eating" because the cell is bringing in solid material too large to pass through the cell membrane.
true
The stage of the cell cycle where cells participate in growth and metabolic activities is known as interphase.
true
Osmosis deals specifically with the diffusion of...
water molecules