Campbell Biology: Concepts & Connections (9th Edition)
9th Edition
ISBN: 9780134296012
Author: Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan, Jane B. Reece
Publisher: PEARSON
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Chapter 4, Problem 3TYK
Summary Introduction
Introduction: The cells have different size as per their diameter and volume ratio.“Cell surface to volume ratio” is important to maintain the cell functions. A small sized cell have high surface area ratio. A high surface to volume ratio is good for the exchange of materials between the cell and its environment. Larger organism has more number of cells instead of large cells to facilitate the better exchange of materials.
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Why is the surface area of a cell so important in determining maximum cell size?
a. a very large cell needs very little surface area relative to its volume
b. a very small cell can't exchange material across its surface
c. a very large cell would need to exchange a very large amount of material with the external environment
d. a typical cell has more surface area than volume
e. all of the above
In which of the following ways does a bacterial cell differ from an animal cell? a. A bacterial cell is much larger than an animal cell. b. A bacterial cell has more mitochondria than an animal cell. c. A bacterial cell has RNA for its genetic material, whereas an animal cell does not. d. A bacterial cell does not have membrane-bound organelles, whereas an animal cell does.
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A cell that makes steroid hormones has a high concentration of smooth endoplasmic reticulum.
Chapter 4 Solutions
Campbell Biology: Concepts & Connections (9th Edition)
Ch. 4 - Label the structures in this diagram of an animal...Ch. 4 - Prob. 2TYKCh. 4 - Prob. 3TYKCh. 4 - Which of the following clues would tell you...Ch. 4 - Prob. 5TYKCh. 4 - What four cellular components are shared by...Ch. 4 - Describe two different ways in which cilia can...Ch. 4 - In which cell would you find the most lysosomes?...Ch. 4 - Prob. 9TYKCh. 4 - Prob. 10TYK
Ch. 4 - In which cell would you find the most...Ch. 4 - In what ways do the internal membranes of a...Ch. 4 - Is this statement true or false? Animal cells have...Ch. 4 - Describe the structure of the plasma membrane of...Ch. 4 - Prob. 15TYKCh. 4 - Describe the pathway of the protein hormone...Ch. 4 - How might the phrase ingested but not digested be...Ch. 4 - Cilia are found on cells in almost every organ of...Ch. 4 - SCIENTIFIC THINKING Microtubules often produce...
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- Cells that line the intestines move nutrients from the intestines through the cell and then to the blood stream. These cells have many folds along their plasma membrane called microvilli. What is the function of these folds? O A. increase the volume of the cell O B. increase the surface area of the cell O C. increase protein transport out of the cell D. increase the ATP production within the cell red MacBook Air 吕口 F3 D00 F4 F7 F2 % & 2 3 5 6 %244arrow_forwardWhich of the following cell organelles is absent in animal cells but present in a plant cell? a. Cell wall b.Cytoplasm c. Vacuoles d. Mitochondriaarrow_forwardWhich of the following statements is NOT TRUE about tissues? A. The extracellular matrix of blood tissue is the plasma B. In adipose tissue, tiny cells are surrounded by very thick extra cellular matrix which is where all the fat is located C. Epithelial cells sometimes have cilia like the ones used in comb jellies and placozoans D. Nervous Tissue has only one cell type, the neuronarrow_forward
- Which 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_forwardThe total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that Select one: A. animal cells are spherical, whereas plant cells are elongated. B. plant cells are capable of having a much higher surface-to-volume ratio than animal cells. C. plant cells have a much more highly convoluted (folded) plasma membrane than animal cells. D. plant cells contain a large vacuole that occupies much of the volume of the cell.arrow_forwardWhich of the following is a feature common to all three components of the cytoskeleton? a. They all serve to scaffold the organelles within the cell. b. They are all characterized by roughly the same diameter. c. They are all polymers of protein subunits. d. They all help the cell resist compression and tension.arrow_forward
- Which of the following correctly compares how plant and animal cells differ?a. Plant cells have chloroplasts and mitochondria for energy, but animal cells do not have mitochondria.b. Plant cells have a cell membrane and cells walls for suppo, but animal cells do not have cell walls.c. Plant cells have ribosomes for synthesis, while animal cells have the Golgi apparatus.d. Plant cells have many small vacuoles for storage, while animal cells have one large central vacuole.arrow_forwardThe smooth endoplasmic reticulum is a. involved in protein synthesis. b. a site of protein glycosylation. c. used to store a variety of ions. d. the site of lipid and membrane synthesis.arrow_forwardA selectively permeable A. allows some substance to move across the membrane, but not others B. allows unlimited movement of materials into or out of the cell C. allows substances to enter, but prevent any substances from leaving the cell D. allows only helpful materials to cross the the cell membrane into the cellarrow_forward
- Which of the following is NOT a function of lysosomes? a. digesting particles taken in by endocytosis b. help in the formation of cell membranes c. degrading worn-out or nonfunctional organelles d. breaking down bone to release calcium ions into the bloodarrow_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_forwardWhich of the following is NOT a component of the cell plasma membrane? A. cholesterol B. proteins C. microfilaments D. phospholipidsarrow_forward
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