Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 8RQ
Water moves via osmosis.
- throughout the cytoplasm
- from an area with a high concentration of other solutes to a lower one
- from an area with a high concentration of water to one of lower concentration
- from an area with a low concentration of water to higher concentration
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Osmosis is _________________
movement of water down its concentration gradient using a protein channel
movement of materials against their concentration gradient
movement of one substance against, and one substance down their concentration gradients
movement of molecules from high concentration to low concentration using no protein channels
movement of materials down their concentration gradient using a protein channel
In osmosis, water moves from a _____ concentration to a _____ lower concentration.
Select one:
higher, lower
higher, higher
lower, higher
lower, lower
Active transport must function continuously because__________.a. plasma membranes wear outb. cells must be in constant motionc. facilitated transport opposes active transportd. diffusion is constantly moving the solutes in the other direction
Chapter 5 Solutions
Biology 2e
Ch. 5 - Figure 5.12 A doctor injects a patient with what...Ch. 5 - Figure 5.16 Injecting a potassium solution into a...Ch. 5 - Figure 5.19 If the pH outside the cell decreases,...Ch. 5 - Which plasma membrane component can be either...Ch. 5 - Which characteristic of a phospholipid contributes...Ch. 5 - What is the primary function of carbohydrates...Ch. 5 - A scientist compares the plasma membrane...Ch. 5 - Water moves via osmosis. throughout the cytoplasm...Ch. 5 - The principal force driving movement in diffusion...Ch. 5 - What problem is faced by organisms that live in...
Ch. 5 - In which situation would passive transport not use...Ch. 5 - Active transport must function continuously...Ch. 5 - How does the sodium-potassium pump make the...Ch. 5 - What is the combination of an electrical gradient...Ch. 5 - What happens to the membrane of a vesicle after...Ch. 5 - Which transport mechanism can bring whole cells...Ch. 5 - In what important way does receptor-mediated...Ch. 5 - Many viruses enter host cells through receptor-...Ch. 5 - Which of the following organelles relies on...Ch. 5 - Imagine a cell can perform exocytosis, but only...Ch. 5 - Why is it advantageous for the cell membrane to be...Ch. 5 - Why do phospholipids rend to spontaneously orient...Ch. 5 - How can a cell use an extracellular peripheral...Ch. 5 - Discuss why the following affect the rate of...Ch. 5 - Why does water move through a membrane?Ch. 5 - Both of the regular intravenous solutions...Ch. 5 - Describe two ways that decreasing temperature...Ch. 5 - A cell develops a mutation in its potassium...Ch. 5 - Where does the cell get energy for active...Ch. 5 - How does the sodium-potassium pump contribute to...Ch. 5 - Glucose from digested food enters intestinal...Ch. 5 - The sodium/calcium exchanger (NCX) transports...Ch. 5 - Why is it important that there are different types...Ch. 5 - Why do ions have a difficult time getting through...
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- The passive movement of a solute through a membrane protein down its concentration gradient is an example of _________. a. osmosis b. active transport c. endocytosis d. diffusionarrow_forwardIn osmosis, water moves from an area of low solute concentration (high water concentration) to an area of high solute concentration (low water concentration). So, it's the movement of water that helps balance the concentration of solutes on both sides of a semipermeable membrane. My question is when water move from high concentration to low concentration ,it's the movement of water making it balance. So why does it says in definition low solutue concentration going to that high solutue concentration, isn't it make the solute like ion and other molecules going to the higher side and not making it balance. High concentration of water to low concentration water movement is make sense to me But low solute cocentration to high solute concentration part does not make sense at all Please explain how does low concerned ntration solute going to high concentration of solute making balance?arrow_forward"Water molecules are small, but they are also polar. They usually cross the plasma membrane by this transport process" simple diffusion facilitated passive transport active transport endocytosis osmosisarrow_forward
- Information: Osmotic pressure is the pressure that a solvent exerts against a semipermeable membrane, such as a cell membrane. The higher the solute concentration, the lower the osmotic pressure. Red blood cells have an osmotic pressure equal to that of a 0.90% (m/v) solution of sodium chloride and 5.0% (m/v) solution of dextrose. A solution that has a higher concentration that this is called hypertonic; one with a lower concentration is called hypotonic. Osmotic pressure is an important factor affecting cells. Osmoregulation is the homeostasis mechanism of an organism to reach balance in osmotic pressure.Hypertonicity is the presence of a solution that causes cells to shrink.Hypotonicity is the presence of a solution that causes cells to swell.Isotonicity is the presence of a solution that produces no change in cell volume.When a biological cell is in a hypotonic environment, the cell interior accumulates water, water flows across the cell membrane into the cell, causing it to…arrow_forwardThe movement of molecules that expends energy to move potassium ions into the cell and a different number of sodium ions out of the cell Simple Diffusion Facilitated Diffusion Osmosis Sodium-Potassium Pumparrow_forwardFill in the blanks in each sentence below after re-reading the section on Osmosis and Tonicity. Osmosis is the movement of _________ across a ___________ ____________. Osmosis is a special case of ___________. Water moves from an area of _________ concentration of water to an area of ______ concentration of water. If a cell is in a hypotonic solution, the extracellular fluid has a ________ solute concentration as compared to the inside of the cell. Water will move ________ the cell. If a cell is in a hypertonic solution, the extracellular fluid has a ________ solute concentration as compared to the inside of the cell. Water will move ________ the cell. If the osmolarity of the extracellular fluid is the same as the osmolarity inside the cell, then this is said to be a/n ______________ solution.arrow_forward
- Osmosis is a special type of diffusion that ________. a. moves water from an area with a high solute concentration to one of lower solute concentration b. moves sugar from an area with a high solute concentration to a lower solute concentration c. moves water from an area with a low solute concentration to one of higher solute concentrationarrow_forwardhelp fill in these blanks in [] Sodium-potassium ATPases are [passive/active] transporters that move sodium and potassium [with/against] their electrochemical gradients. In other words, potassium and sodium transport, without any coupled process, are [endergonic/exergonic] processes. These transporters are [primary active/facilitated/secondary active] transporters meaning that the transport process is coupled to [ATP hydrolysis/ion diffusion] to make the process spontaneous. P-type ATPases are [acid-base/covalent/nucleophilic] catalysts that become phosphorylated during the transport cycle. The sodium-potassium ATPase moves [3/2/1] cations out of the cell for every [1/2/3] cations it moves into the cell, polarizing the membrane such that the inside is [positive/negative] compared to the outside.arrow_forwardActive transport is ____________ movement of water down concentration gradient using a protein channel movement of materials against their concentration gradient movement of one substance against, and one substance down their concentration gradients movement of molecules from high concentration to low concentration using no protein channels movement of materials down their concentration gradient using a protein channelarrow_forward
- Which of the following is false concerning osmosis? Question options: The net movement of water molecules from a region of lower water potential to a region of higher water potential across a semipermeable membrane. Individual molecules of water are in constant flux into and out of cells. The movement of water molecules from a region of higher water potential to a region of lower water potential across a semipermeable membrane. The effects of osmosis vary between cell types.arrow_forwardcells exchange small molecules and ions are probably connected by tight junctions true or false?arrow_forwardIn the Osmosis Gizmo, the cell is placed in a very small chamber. Suppose a cell is placed in a large container of water with a very low solute concentration. What do you think would happen?arrow_forward
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