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The illustration below shows a cell and a large particle. Many substances, such as proteins and polysaccharides, are too large to be transported into a cell by carrier proteins. In a process called endocytosis, the large particle is brought into the cell.
Which of the following statements correctly summarizes this process?
A saltwater fish is accidentally placed in a freshwater aquarium in a few short hours it sadly died. Which explains why this occurred?
The diffusion of water through a selectively permeable membrane is called osmosis. Which description represents the effects of osmosis on a plant cell when the concentration of sugar particles is greater inside the cell than outside?
Active transport requires through the use of . Passive transport does not require .
A student places a bunch of grapes in a bowl of plain water and a second bunch of grapes in a bowl of salt water. After an hour, the grapes in the plain water are swollen, whereas the grapes in the salt water are shriveled. What cellular process caused the grapes to shrivel?
What does homeostasis mean?
What characteristic of the plasma membrane is illustrated in this drawing?
The diagram below represents a cell in water. Explain why more water is moving out of the cell than into the cell.
A student measures the mass of each of six potato cores and places one core in each of the unknown solutions. After a period of time, the student removes the potato cores and measures the mass of each one. The results are shown in the table.
Which statement best describes a conclusion the student can make about the results?
Match the following diagrams of cell transport with their correct term.
Use the diagrams to answer the question.
The diagrams show how carrier molecules allow passive and active transport. In the diagram of active transport, the letter X represents another molecule. This molecule provides energy for active transport but is not needed for passive transport.
Which molecule is most likely represented by the letter X ?
Match the following terms with their correct description.
What means of particle transport requires energy?
What is the diffusion of water through a selectively permeable membrane?
What is the movement of particles from high to low concentration?
What is the diffusion of particles from high to low concentration through the use of transport proteins?
Match what will happen next to the correct description.
Placing a cell in an isotonic solution causes the cell to
Placing a cell in an hypertonic solution causes the cell to
Placing a cell in an hypotonic solution causes the cell to
Placing a cell containing 10% salt into a solution containing 15% salt will cause the cell to
How does the cell membrane help the cell maintain homeostasis?
Placing a cell containing 10% salt into a solution containing 7% salt will cause the cell to
Salmonberry plant roots absorb minerals. What cellular process moves minerals across root cell membranes from an area of low mineral concentration to an are of high mineral concentration?
This picture represents which type of cellular transport? (endocytosis, exocytosis)
The diagram below shows how a paramecium maintains homeostasis. A paramecium normally lives in a hypotonic environment in which water continually diffuses into the cell. To maintain homeostasis, the paramecium must pump out large amounts of water using its contractile vacuole.
If the paramecium is then placed in a hypertonic environment, which of the following will occur?
The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by…
A sodium-potassium pump within a cell membrane requires energy to move sodium and potassium ions into or out of a cell. The movement of glucose into or out of a cell does not require energy. Which statement best describes the movement of these materials across a cell membrane?
The cell below is in a _________ solution. (hypertonic, hypotonic, isotonic)
As illustrated below, the molecules of many membranes are arranged with their polar heads to the outside and their nonpolar tails to the inside
With this arrangement, where would you MOST likely find water molecules?
The cell below is in a _____________ solution. (hypertonic, hypotonic, isotonic)