BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 4, Problem 9WIO
Summary Introduction
To determine:
The mechanism that can be used to import more glucose in a liver cell.
Introduction:
A biological membrane has selective permeability. Some substances pass freely through phospholipid bilayer, but others require help from proteins.
Summary Introduction
To determine:
The reason that only one mode of transport can import more glucose in the liver cell.
Introduction:
The term gradient describes the concentration difference between the cell and the surrounding. In a concentration gradient, a solute is concentrated in one region as compared to the neighboring region.
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Liver cells are packed with glucose. If the concentration of glucose in a liver cell is higher than in the surrounding fluid, what mechanism could the cell use to import even more glucose? Why would only this mode of transport work?
If your cell can use passive transport without having to use energy, why would a cell invest ATP to move particles using active transport?
If your cell can use passive transport without having to use energy, why would a cell invest ATP to move particles using active transport? Provide a specific example.
Chapter 4 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 4.1 - Describe how your body has potential and kinetic...Ch. 4.1 - Prob. 2MCCh. 4.2 - Prob. 1MCCh. 4.2 - Prob. 2MCCh. 4.2 - Prob. 3MCCh. 4.3 - Prob. 1MCCh. 4.3 - Describe the relationship between energy-requiring...Ch. 4.4 - Prob. 1MCCh. 4.4 - Prob. 2MCCh. 4.4 - What is the role of negative feedback in enzyme...
Ch. 4.4 - Prob. 4MCCh. 4.5 - Prob. 1MCCh. 4.5 - What types of substances diffuse freely across a...Ch. 4.5 - What would happen to a plant cell in a hypertonic...Ch. 4.5 - Prob. 4MCCh. 4.5 - Prob. 5MCCh. 4.5 - Prob. 6MCCh. 4 - Prob. 1MCQCh. 4 - How does ATP participate in coupled reactions? a....Ch. 4 - How do proteins contribute to the function of an...Ch. 4 - Prob. 4MCQCh. 4 - Prob. 5MCQCh. 4 - Prob. 6MCQCh. 4 - Prob. 7MCQCh. 4 - Prob. 8MCQCh. 4 - How does ATP relate to membrane transport? a. The...Ch. 4 - Prob. 1WIOCh. 4 - Prob. 2WIOCh. 4 - Prob. 3WIOCh. 4 - Prob. 4WIOCh. 4 - Use what you know about enzymes to propose an...Ch. 4 - Considering that enzymes are essential to all...Ch. 4 - Prob. 7WIOCh. 4 - Prob. 8WIOCh. 4 - Prob. 9WIOCh. 4 - List three ways the content in this chapter...Ch. 4 - Golden knifefish use an electric field to detect...Ch. 4 - Review Burning Question 4.4, which explains how...Ch. 4 - Prob. 1PITCh. 4 - Prob. 2PITCh. 4 - Prob. 3PITCh. 4 - Prob. 4PIT
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- Which 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_forwardActive transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other directionarrow_forwardIn which situation would passive transport not use a transport protein for entry into a cell?arrow_forward
- When cellular transport through the plasma membrane must be provided with energy in form of ATP to power the transport process, what is this called? A. Selective permeability B. Passive transport C. Active transport D. Diffusionarrow_forwardGlucose is often present in very low concentrations in environments populated by microorganisms. To import the maximum amount of available glucose, cells use a. Receptor-mediated endocytosis b. Simple diffusion c. Osmosis d. Facilitated diffusionarrow_forwardwhy would a cell invest ATP to move particles using active transport?arrow_forward
- Which process requires energy—passive or active transport? Why is energy sometimes required to move solute across the cell membrane?arrow_forwardWhich of these REQUIRES active transport in order to cross the plasma membrane?arrow_forwardwhy is it important to understand the transport mechanism in cellsarrow_forward
- In terms of rate of transport of a molecule across a membrane , what is the difference between passive and active transport?arrow_forwardGlucose is transported across the cell membrane of intestinal cells. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information, which transport mechanism is most probably functioning in the intestinal cells? A facilitated diffusion B simple diffusion C osmosis D concentration gradientarrow_forwardWhich statement is NOT true of membrane transport • proteins? A. Their specificity depends on their three-dimensional structure. B. They are responsible in some cases for facilitated diffusion. C. They are responsible in some cases for active transport. D. They produce a chemical change in the molecules they are transporting.arrow_forward
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