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 11RQ
In which situation would passive transport not use a transport protein for entry into a cell?
- water flowing into a hypertonic environment
- glucose being absorbed from the blood
- an ion flowing into a nerve cell to create an electrical potential
- oxygen moving into a cell after oxygen deprivation
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Which feature is typical of primary active transport?
The transport protein must cross to the correct side of the membrane before the solute can bind to it.
The transport protein is irreversibly phosphorylated as transport takes place.
The transport protein catalyzes the conversion of ADP to ATP.
The solute moves against the concentration gradient.
A concentration gradient provides the energy to move substances against their concentration gradient
In which situation would passive transport not use a transport protein for entry into a cell?
water flowing into a heypertonic environment
an ion flowing into a nerve cell to create an electrical potential
glucose being absorbed from the blood
oxygen moving into a cell after oxygen deprivation
Which of the following would be most likely to move across the membrane
without a transport protein?
Water, because it is small and polar
O2 (molecular oxygen), because it is small and nonpolar
A cation, because it is small and positively charged
An anion because it is small and negatively charged
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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- A transport protein requires ATP to pump sodium ions across a membrane. This is a case of ______. a. passive transport b. active transport c. facilitated diffusion d. a and carrow_forwardDistinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active transport c. endocytosis; exocytosisarrow_forwardWhich of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.arrow_forward
- 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_forwardWhich is the complete description of active transport? The movement of molecules from an area of higher concentration to an area of lower A concentration across a selectively permeable membrane which uses metabolic energy from ATP. The movement of molecules from an area of higher concentration to an area of lower B concentration across a selectively permeable membrane which does not use metabolic energy from ATP. The movement of molecules from an area of lower concentration to an area of higher C concentration across a selectively permeable membrane which uses metabolic energy from ATP and transport proteins. The movement of molecules from an area of lower concentration to an area of higher D concentration across a selectively permeable membrane which does not use metabolic energy from ATP and transport proteins.arrow_forwardWhich of the following is true regarding bulk transport? ATP is required to pump molecules against the concentration gradient Bulk transport is an example of passive transport Transport of large quantities of materials ATP changes the shape of a protein channel during active transportarrow_forward
- Which of the following describe active transport or is an example of act transport of a substance across a membrane? Choose all correct answer Glucose transport into intestinal epithelial cells Glucose transport into muscle cells Na* ion pumping out and K* ion pumping into the cell Transport requires a mediator Requires input of energy for transport Movement of ligand against the concentration gradientarrow_forwardPassive transport across the membrane mediated by a carrier— would not be saturated by increasing amount of substance to be transported. does not require energy (ATP). can be driven in reverse. moves the solute through the membrane in the “uphill” direction of their concentration gradient. is faster than transport mediated by channel proteins.arrow_forwardSecondary active transport directly uses ATP for the energy needed to function is a form of diffusion utilizing no energy uses a calcium concentration difference for energy uses an ion concentration difference for energyarrow_forward
- Which of the following statements about passive processes of membrane transport is false? cellular energy is not required substances move along its concentration gradient all require the aid of proteins during transport a and b a and carrow_forwardWhich of the following statements is NOT TRUE about membrane transport? to facilitate movement of ions and molecules across membranes. to move food, water, and wastes around, into, and out of a cell. to get rid of duplicated organelles in a cell. to transport proteins, lipids, and other molecules synthesized by the cell.arrow_forwardCompare and contrast the following methods of a passing cell membrane in terms of movement with respect to the concentration gradient, use of ATP, and the use of transporters with examples. Active Transport vs Passive Transportarrow_forward
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