BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 5, Problem 8SA
Summary Introduction
Introduction:
Substances that cannot diffuse directly through a lipid bilayer cross the cell membrane through transport proteins. Each type of transport protein allows the movement of only a specific substance.
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Which of the following statements is true about active transport?
A. The transported species always moves against its electrochemical gradient.
B. It is needed only for the transport of polar molecules.
C. It is exergonic.
D. It must be linked to ATP hydrolysis.
In an adipose cell, after being synthesized by the ribosomes and the rough endoplasmic reticulum a protein involved in hydrolysis of lipid could be transported to the:
a) mitochondrion, b) smooth endoplasmic reticulum, c) Golgi apparatus, d) Chloroplasts, e) nucleus
CO2 can cross the plasma membrane by diffusion. If a cell is in the process of metabolizing glucose, which direction would diffusion tend to carry CO2 molecules? (It may help to consider: where is CO2 highly concentrated? Would diffusion carry CO2 toward or away from this location?
Group of answer choices
A. From inside the cell to outside the cell
B. From outside the cell to inside the cell
C. not enough info to tell
Chapter 5 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 5 - Which of the following statements is not correct?...Ch. 5 - ________ is lifes primary source of energy. a....Ch. 5 - Prob. 3SACh. 5 - Prob. 4SACh. 5 - ________ are always changed by participating in a...Ch. 5 - Name one environmental factor that typically...Ch. 5 - Prob. 7SACh. 5 - Prob. 8SACh. 5 - Prob. 9SACh. 5 - A molecule that donates electrons becomes...
Ch. 5 - Solutes tend to diffuse from a region where they...Ch. 5 - Prob. 12SACh. 5 - A transport protein requires ATP to pump sodium...Ch. 5 - Immerse a human blood cell in a hypotonic...Ch. 5 - Prob. 15SACh. 5 - Beginning physics students are often taught the...Ch. 5 - Describe diffusion in terms of entropy.Ch. 5 - How do you think a cell regulates the amount of...Ch. 5 - The enzyme trypsin is sold as a dietary enzyme...Ch. 5 - Catalase combines two hydrogen peroxide molecules...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The hydrolysis of ATP drives three types of cellular work. Which of the following is not an example of how to cell uses ATP? * a) The movement of cells. b) The transport of sodium as part of the sodium-potassium pump. c) The breakdown of glucose into smaller molecules. d) Anabolic reactions that build molecules.arrow_forwardWhat is a regulatory mechanism in which a reaction product slows or stops a metabolic pathway that produces it? A. Phosphorylation B. Feedback inhibition C. Electron transfer chain D. Coenzymearrow_forwardWhich of the following is the best example of potential energy in a cell?a. Cell division b. A molecule of glucose c. Movement of a flagellum d. Assembly of a cellulose fiberarrow_forward
- Cells are able to extract energy from glucose during cellular respiration. Which of the following contributes to the release of energy? Answer can be multiple a Creating energy by breaking C-H and C-C bonds. b Breaking high energy bonds to release their energy. c Replacing glucose's high energy bonds with new low energy bonds. d The formation of strong C-O and O-H bonds.arrow_forwardWhich of the following explains why a cell's size is limited? a The cell membrane increases too fast for the cytoplasm to keep up with its reactions. b The cell membrane becomes rigid. c The cell membrane cannot supply enough substances to support organelles in the center. d The cell membrane is too large to allow for transport.arrow_forwardMovement of glucose down its concentration gradient into cells is facilitated by Select one: a. Active transport b. Diffusion across phospholipids c. Facilitated transport d. a protein that consumes ATP e. a protein that gets phosphorylatedarrow_forward
- Why is it advantageous for a cell to have organelles? Discuss this concept from the standpoint of thermodynamics.arrow_forwardAll of the chemical reactions that occur in a cell are calleda. homeostasis. b. metabolism.c. heterostasis.d. cytoplasm.arrow_forwardWhich of the following statements about cellular membranes is/are FALSE? A. Only lipids move Within the membrane, while the proteins are anchored and immobile. B. Membranes are composed of lipids and proteins. C. Substances may be transported across membranes by active transport, facilitated transport or diffusion. D. Membrane proteins are classified as integral or peripheral, upon their functionarrow_forward
- Which One is NOT TRUE about membranes? a. Membranes rich in fatty acids containing one or more double bonds are more fluid than membranes with no double bonds in fatty acids. b. If cholesterol is present in membranes, the fluidity of membranes will be reduced at moderate and warm temperatures. c. If cholesterol is present in membranes, the fluidity will remain intact at low temperatures. d. If the fatty acids with double bond are present in membranes, the membrane will be viscous.arrow_forwardUpon swapped changes in cell compartment, describe the advantage or disadvantage that in each of the eukaryotic and prokaryotic cells. In your view, explain why carbohydrates is the most predominant type of food in the world's diet? Explain shortly.arrow_forwardThe molecule Q moves through the non-polar portion of the inner membrane of mitochondria. Based solely on this observation which of the following would apply? a. It is associated with motor proteins. b. None of the other answers are correct. c. It is a primarily polar molecule. d. It is a lipid insoluble molecule.arrow_forward
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