Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 11, Problem 5TYU
Summary Introduction
Introduction:
The extracellular fibers present within tissues of plant cells are composed of polysaccharide molecule, cellulose, assembling to microfibrils that provide structural support and rigidity to cells.
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Chapter 11 Solutions
Biological Science (6th Edition)
Ch. 11 - What is a fiber composite? How do cellular fiber...Ch. 11 - Prob. 2TYKCh. 11 - Prob. 3TYKCh. 11 - Prob. 4TYKCh. 11 - Prob. 5TYUCh. 11 - Summarize the experimental evidence in sponges...Ch. 11 - 7. QUANTITATIVE Suppose you were to model...Ch. 11 - What is the significance of the observation that...Ch. 11 - Prob. 9TYPSSCh. 11 - Prob. 10TYPSS
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- Which of the following statements is INCORRECT about plant cells? A. They have nucleus with circular chromosomes. B. They have cytoplasm that contains all of the organelles. C. They have rigid cell walls. D. They have a large, fluid-filled space inside that helps them maintain their shapearrow_forwardWhat did Went's experiments with the gelatin block demonstrate? A. Plants cannot be induced to bend during growth unless they are exposed to an indirect source of light. B. Light induces the coleoptile to produce a diffusible substance that moves to the growing region of a plant where it stimulates cells to elongate. C. Gelatin can enhance the movement of a soluble factor from the growing region of a plant to the coleoptile where it accelerates growth. D. When a plant tip is removed from a growing plant, the plant acquires the ability to bend toward the lightarrow_forwardDraw a diagram and briefly describe the extracellular matrix in plants.arrow_forward
- Which of the following is not a correct statement when comparing planttissues and animal tissues?a. Nervous tissue of animals plays the same role as vascular tissue inplants.b. The dermal tissue of plants is similar to epithelial tissue of animalsin that both provide a covering for the organism.c. The epithelial tissue of animals and the dermal tissue of plants havespecial characteristics that limit the movement of material betweencell layers.d. The ground tissue of plants and the connective tissue of animalsprovide structural support for the organism.e. The ground tissue of plants and the connective tissue of animalshave large amounts of extracellular material (that is, thick cell wallsin plants and lots of ECM in animals).arrow_forwardWhich of the following is true about plant cellulose synthesis? a.cellulose fibers are arranged in a random mesh b. cellulose synthesis is guided by the actin cytoskeleton c.cellulose synthesis occurs outside the cell d. cellulose is a polypeptide that makes up a plant cell wall Question 3 Which of the following are true about collagen synthesis? 1collagen fibers can be oriented in parallel or in alterating directions 2.collagen is synthesized by fibroblasts 3a collagen molecule is a double helix 4collagen is the most abundant protein in the animal extracellular matrix 5collagen molecules are assembled into fibers in the cytoplasm before secretionarrow_forwardThe middle lamella of plant cells is made of Select one: a. A sugar called pectin b. A sugar called lignin c. A sugar called cellulose d. proteoglycans (GAGs)arrow_forward
- We say that movement is a characteristic of living organisms but we always don’t see visible movements in plants. Comment.arrow_forwardConsider a plant that is exposed to extreme cold temperatures. Do the cells of this plant manipulate the composition of their membranes in response to this environmental stress?If not, explain why the plant does not manipulate membrane composition in response to this stress.If so, explain the specific changes that these cells would carry out in response to this environmental stress.arrow_forwardWhich of these cell junctions are open channels that connect the cytoplasm of adjoining plant cells? A. Adhering junctions B. Tight junctions C. Gap junctions D. Plasmodesmataarrow_forward
- Plant secondary cell walls are very similar to primary cell walls but have one added sugar that gives them more sturdiness (firmness). This extra sugar is... Select one: a. cellulose b. lignin c. GAGs d. pectinarrow_forwardWhat are the functions of the nuclear pores? Select all that apply. A. Transport RNA from the cytoplasm to the nucleus for protein synthesis B. Transport RNA from the nucleus to the cytoplasm for protein synthesis C. Transport proteins from the nucleus to the cytoplasm for RNA synthesis D. Transport proteins from the cytoplasm to the nucleus for RNA synthesisarrow_forwardWhat are some activities that are difficult for animals because plants have a hairy leaf?arrow_forward
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