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Cell Membranes & Cell Transport STCC Flashcards | StudBud
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Cell Membranes & Cell Transport STCC
Cell Membranes & Cell Transport STCC
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Covers the basics about cell membranes and cell transport. Biology test revision.
Flashcards
24 cards
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Practice quiz
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Questions
24
Answers
1
Water enters, cell swells; lower solute concentration outside the cell than inside = __solution
hypertonic
hydroponic
isotonic
hypotonic
2
The basic structure of the cell membrane is
a phospholipid bilayer.
made of proteins.
a liquid bilayer.
impermeable.
3
Requires energy; materials enter pockets in cell membrane, then forms vacuole in cytoplasm = ?
pinocytosis
exocytosis
phagocytosis
endocytosis
4
Which of these is selectively permeable?
a strainer
all of these are selectively permeable
a cell membrane
a window screen
5
What kind of solution is the red blood cell on the left in?
isotonic
hypotonic
hydroponic
hypertonic
6
Active transport
moves materials against a concentration gradient
is usually done by transport proteins in the cell membrane
requires energy
all of the answers are correct
7
What is structure "D"?
cholesterol
a phospholipid
a protein
a glucose molecule
8
What is concentration?
amount of things in a given area
the density of a substance
the amount of mass something has
the weight of a substance
9
Passive transport (2 responses needed).
requires energy.
moves particles against a concentration gradient.
doesn't require energy.
moves particles from a high to a low concentration.
10
What kind of solution is the red blood cell in the middle in?
hydroponic
hypotonic
isotonic
hypertonic
11
What kind of transport doesn't require the use of energy to move materials across the membrane?
facilitated diffusion
diffusion
all of these don't require the cell to use energy
osmosis
12
A cell is in a ____solution when: size doesn't change; water goes in and out at the same rate
hypertonic
hypotonic
isotonic
hydroponic
13
Requires energy; vacuole fuses with membrane, contents forced out of cell = ?
phagocytosis
exocytosis
pinocytosis
endocytosis
14
The stuff that does the dissolving is the __________.
solution
solute
solvent
suspension
15
"A" is
a hydrophobic fatty acid "tail"
cholesterol
a protein
a hydrophilic phosphate "head"
16
Water leaves, cell shrinks; higher solute concentration outside cell than inside = ? solution
hypotonic
hydroponic
hypertonic
isotonic
17
Another name for the cell membrane is
the plasma membrane
the endocytic barrier
the cell wall
the nuclear membrane
18
What molecules are imbedded in the bilayer?
glucose
ribosomes
proteins
nucleic acids
19
Movement of particles from an area of high concentration to an area of lower concentration is:
equilibrium
osmosis
endocytosis
diffusion
20
What kind of solution is the red blood cell on the right in?
hypertonic
hydroponic
hypotonic
isotonic
21
Equilibrium is reached
only during passive transport.
when movement of particles stops.
at the end of active transport.
when particles are evenly distributed through the space.
22
__________ is the diffusion of water through a semipermeable membrane.
osmosis
exocytosis
facilitated diffusion
active transport
23
The primary function of the cell membrane is
to provide support for the cell.
to protect the cell
cell signaling.
to control what moves in and out of the cell.
24
The stuff that is dissolved is the _________.
suspension
solute
solution
solvent
