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WorksheetsCell Transport
Total questions: 15
Worksheet time: 8mins
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Diffusion
Osmosis
Active Transport
Facilitated Diffusion
an important “energy molecule” found in all life forms.
ATP
Enzyme
Carbohydrate
Lipid
the passive movement of molecules or particles from regions of higher to regions of lower concentration
Diffusion
Active Transport
Facilitated Diffusion
Osmosis
any self-regulating process by which biological systems tend to maintain stability
Metabolism
Homeostasis
Meiosis
Mitosis
is the gelatinous liquid that fills the inside of a cell
Mitochondria
Chloroplast
Ribosome
Cytoplasm
a rigid layer of polysaccharides lying outside the plasma membrane of the cells it consists mainly of cellulose
Cell Membrane
Cell Wall
Nucleus
Capsid
allowing certain substances to pass through it but not others
Permeable
Open
Active Transport
Semi-Permeable
the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules
Facilitated Diffusion
Osmosis
Active Transport
Diffusion
occurs when the concentration of particles is higher in one area than another
Protein Channel
Diffusion
Osmosis
Concentration Gradient
a double layer of phospholipids and proteins that surrounds a cell. It separates the cytoplasm (the contents of the cell) from the external environment.
Cell Wall
Nucleus
Cell Membrane
Chloroplast
a type of membrane transport that does not require energy to move substances across cell membranes
Active Transport
Concentration Gradient
Passive Transport
Cell Membrane
movement of materials across cell membranes, includes passive and active transport
Diffusion
Cell Transport
Osmosis
Protein Channel
the movement of molecules or particles from regions of higher to regions of lower concentration with the help of a transport molecule
Active Transport
Diffusion
Facilitated Diffusion
Osmosis
Which statement describes the process of osmosis in an animal cell?
Sugar molecules move across the plasma membrane until the cell has enough energy to
grow in size and divide.
Water molecules move across the plasma membrane until solute concentrations are equal
on both sides of the membrane.
Ions move across the plasma membrane until the inside of the cell has a higher
concentration of positive charges.
Enzymes move across the plasma membrane until the cell has completed metabolism.
Some students used vinegar to dissolve away the shells of three eggs and used these eggs as models of human red blood cells. The students observed the changes in the eggs when they were placed in different solutions.
Which statement best describes the role of the cell membrane In this model?
The cell membrane is an impermeable, barrier that prevents water from entering the
cell.
The cell membrane allows solutes to enter the cell, which causes the cell to shrink.
The cell membrane allows water to enter and leave the cell.
The cell membrane removes solutes from the environment.
