Biology topic 4 - Statistics

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This quiz has been taken 5 times
The average score is 13 of 58

Answer Stats

Hint	Answer	% Correct
Can most water-soluble substances pass through the phospholipid bilayer	no	80%
Is diffusion an active or passive process	passive	80%
Is active transport an active or passive process	active	60%
A hypotonic solution has a higher water potential than the animal cell, so water molecules move into the cell, causing the cell to swell and ____	burst	60%
what is the simultaneous transport of two substances across a membrane	cotransport	60%
The more carrier proteins, the ______the rate of facilitated diffusion	faster	60%
What is the name of the 1972 model used to describe cell membrane structure	fluid mosaic	60%
Co-transport allows glucose to be transported against its concentration gradient,______ its uptake efficiency	increasing	60%
what is the movement of water molecules from a higher water potential to a lower water potential through a partially permeable membrane	osmosis	60%
Is osmosis an active or passive process	passive	60%
A hypertonic solution has a lower water potential than the animal cell, so water molecules move out of the cell, causing the cell to _____	shrink	60%
Name 5 factors that affect the rate of diffusion across a membrane	temperature	60%
'______ the concentration gradient' means that substances are moving from an area of lower concentration to an area of higher concentration	against	40%
what's described as The net movement of particles, from an area of higher concentration to an area of lower concentration	diffusion	40%
the more carrier proteins, the _____ the rate of active transport	faster	40%
An _____ solution has the same water potential as the animal cell, so there is no net movement of water and the cell stays the same size	isotonic	40%
what do you call a membrane that lets some molecules through, but not others	partially permeable	40%
Higher _____ means particles have more kinetic energy.so particles move around more quickly, and can diffuse more quickly	temperature	40%
Name a factor that affects the rate of active transport	temperature/thickness of membrane/number of carrier proteins/ rate of respiration	40%
What are some factors affecting the rate of osmosis	temperature/water potential gradient/thickness of membrane/surface area	40%
what is the movement of molecules across a membrane, from a region of lower concentration to a region of higher concentration	active transport	20%
What type of protein is used in active transport	carrier	20%
Some large molecules can attach to ______, which causes them to change shape.the _____ release the molecules on the opposite side of the membrane	carrier proteins	20%
If you add sugars and salts to a beaker of water, what will happen to the water potential	decreases	20%
how do glucose molecules move from the epithelial cells into the bloodstream	facilitated diffusion	20%
what are lipids attached to carbohydrates	glycolipids	20%
what are intrinsic proteins attached to carbohydrates	glycoproteins	20%
Name two types of diffusion	simple and facilitated	20%
what is the process in which molecules diffuse directly across membranes	simple diffusion	20%
	surface area	20%
what is a measure of the pressure exerted by water molecules on the membrane or container surrounding a solution	water potential	20%
Plant cells have a strong cell wall made of cellulose, which prevents them from ______	burstinf	0%
Give three roles of glycoproteins and glycolipids	cell adhesion	0%
	cell recognition	0%
	cell signalling	0%
what acts as a barrier between the cell and its environment to control which substances enter and leave the cell	cell surface membrane	0%
	cholesterol	0%
	concentration gradient	0%
What is the role of sodium in co-transport	creates a concentration gradient	0%
	diffusion distance	0%
	glucose protein channel	0%
	glycoproteins and glycolipids	0%
Where does co-transport of sodium and glucose occur in digestion	ileum of small intestine	0%
How does adding a solute to water affect the water potential	makes it more negative	0%
	number of carrier proteins	0%
_____ can enter cells via simple diffusion because it is a small and non-polar molecule	oxygen	0%
Name five components of cell-surface membranes	phospholipid bilayer	0%
why are Cell membranes described as fluid	phospholipid molecules are constantly moving	0%
	proteins	0%
why are cell membranes described as mosaic	proteins of different shapes and sizes	0%
What is the role of cholesterol in the cell-surface membrane	provides stability and reduces fluidity	0%
Which substances can pass through the phospholipid bilayer	small and non polar	0%
which proteins move sodium ions from a high concentration in the lumen of the ileum to a low concentration in the ileum epithelial cells	sodium glucose co transporter	0%
	sodium glucose co transporter protein	0%
Name the three proteins involved in the co-transport of sodium and glucose	sodium potassium pump	0%
what actively transports sodium ions out of epithelial cells into the blood	sodium potassium pump	0%
Explain how ions enter cells via facilitated diffusion	through channel proteins	0%
Describe the roles of channel and carrier proteins in the cell-surface membrane.	transport large molecules and ions	0%

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