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WorksheetsUnit 3: Cellular Transport Test
Total questions: 18
Worksheet time: 9mins
When does diffusion occur across a cell membrane?
when the concentration of particles is different on each side of the membrane
when the concentration of particles is equal on both sides of the membrane
when there are no particles on either side of the membrane
when water moves across the membrane
Which of the following is a requirement for diffusion to take place?
a transport protein
a carrier molecule
a transport carbohydrate
a concentration gradient
Which two of the following processes require energy?
osmosis
exocytosis
diffusion
facilitated diffusion
endocytosis
Water will move out of a cell when it is placed in which type of solution?
hypotonic
hypertonic
ergonomic
isotonic
Which of the following substances most easily travel through the phospholipid bilayer of a cell membrane?
sodium ions
water molecules
oxygen molecules
hormones
Which of the following is the cell organelle most responsible for maintaining cellular homeostasis?
Golgi complex
nucleus
endoplasmic reticulum
cell membrane
Why would an animal cell burst if it is surrounded by fresh water?
because solutes will move out of the cell
because water will move out of the cell
because solutes will move into the cell
because water will move into the cell
What is the diffusion of water across a selectively permeable membrane called?
osmosis
endocytosis
facilitated diffusion
active transport
Study the diagram below. The diagram above shows which process?
diffusion
osmosis
active transport
endocytosis
Which of the following structures can be used to move small particles such as ions across the cell membrane via active transport?
polar bodies
transport proteins
aquaporins
phospholipids
The gill cells of a saltwater fish use active transport to move sodium ions out of the cells. The gill cells most likely use which of the following to remove sodium ions against the concentration gradient?
a phospholipid molecule
a water molecule
a chromosome
a protein pump
Study the diagram below. The diagram above shows which process?
facilitated diffusion
osmosis
active transport
endocytosis
For which of the following reasons would a cell use the process of exocytosis?
to bring a food molecule into the cell
to excrete a hormone out of the cell
to diffuse oxygen through a cell membrane
to bring water into a cell
Use the diagram below to answer the following question. What will happen to the cell?
It will lose water and shrink.
It will swell with water.
It will gain sodium ions.
It will remain the same size.
In plants, root hairs are responsible for both water and mineral uptake. Water is not required for the root hairs to absorb the minerals. Minerals such as potassium (K+) are absorbed via membrane transport proteins against as much as a ten thousand-fold concentration gradient. This uptake of minerals through plant root hairs is an example of —
osmosis.
facilitated diffusion.
active transport.
diffusion.
Human macrophages are specialized white blood cells that are able to attack and "swallow" bacteria in order to fight or prevent bacterial infection. Macrophages have many lysosomes that contain enzymes to dissolve the engulfed bacterium cell. What process are these cells specifically designed to carry out?
osmosis
endocytosis
facilitated diffusion
exocytosis
Human kidney cells function to regulate the concentration of water and minerals in the blood. The graph shows that as the concentration of water increases outside the cells, more and more water molecules enter the cells. Which two statements are accurate conclusions that can be drawn from this graph?
Water is nonpolar.
The lysosomes are regulating the action of the kidney cell membranes.
The kidney cell membranes are selectively permeable to water.
The movement of water across the kidney cell membranes requires energy.
Water enters kidney cells through the process of osmosis.
Which two substances would animal intestinal cells most likely take in via facilitated diffusion?
glucose
calcium ions
carbon dioxide
oxygen
hormones
