Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 2, Problem 10R
Summary Introduction
Introduction:
Chitin is the primary component of cell wall of
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Which of the below statements correctly describes the extracellular matrix?
a)A layer that facilitates connections and communications with other cells in a tissue
b)A gel like substance that resists compression
c)All of the other answers are correct
d)a complex mix of proteins and polysaccharides.
Which of the following is not a function of cytoskeleton in a cell ?
A) Maintenance of cell shape and structure
B) Intracellular transport
C) Cell motility
D) Support of the organelle
Which of the following describes the plasma membrane?
1) phospholipid bilayer surrounding the cell
2) a membrane composed of tiny shelves or cristae
3) single-layered membrane that surrounds the nucleus of the cell
4) double layer of protein enclosing the plasma
Chapter 2 Solutions
Microbiology: An Introduction
Ch. 2 - What is a chemical element?Ch. 2 - DRAW IT Diagram the electronic configuration of a...Ch. 2 - What type of bond holds the following atoms...Ch. 2 - Classify the following types of chemical...Ch. 2 - Bacteria use the enzyme urease to obtain nitrogen...Ch. 2 - Classify the following as subunits of either a...Ch. 2 - DRAW IT The artificial sweetener aspartame, or...Ch. 2 - DRAW IT The following diagram shows the...Ch. 2 - Prob. 9RCh. 2 - Prob. 10R
Ch. 2 - Assume E. coli bacteria are grown in a nutrient...Ch. 2 - If Pseudomonas bacteria are supplied with...Ch. 2 - If E. coli were grown in a medium containing the...Ch. 2 - Prob. 4MCQCh. 2 - Prob. 5MCQCh. 2 - Prob. 6MCQCh. 2 - The dissociation products of the molecules are...Ch. 2 - Prob. 8MCQCh. 2 - The dissociation products of the molecules are...Ch. 2 - Prob. 10MCQCh. 2 - When you blow bubbles into a glass of water, the...Ch. 2 - Prob. 2ACh. 2 - Prob. 3ACh. 2 - Prob. 4ACh. 2 - Prob. 1CAECh. 2 - Prob. 2CAECh. 2 - Newborn babies are tested for phenylketonuria...Ch. 2 - The antibiotic amphotericin B causes leaks in...Ch. 2 - Prob. 5CAE
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- Why is it advantageous for the cell membrane to be fluid in nature?arrow_forwardWhich of the following statements about cell membranes is NOT true? A) Membranes are sheet like structures, only two molecules thick, that form closed boundaries between different compartments. B) Membranes consist mainly of lipids and proteins. C) Membranes are very rigid, impermeable structures Membrane lipids are small molecules that have both hydrophilic and hydrophobic moieties. D)arrow_forwardWhich of the following statements is true? a) cells do not need ribosomes if they have mitochondriab) all cells have a cell membrane but not all cells have a cell wallc) all prokaryotes are unicellular and all eukaryotes are multicellulard) cells can have either a cell membrane or a cell wall or botharrow_forward
- 1) All of the following are functions of proteins within a membrane except __________. A)Maintaining the fluidity of membranes B)transport ions and other polar substances C)receptors to bond molecules outside of the cell D)helping the body to recognize its own cells 2) Which of the following organelles is not part of the endomembrane system A)mitochondria B)golgi apparatus C)lysosomes D)rough endoplasmic reticulum 3) Which cytoskeletal element is composed of actin and is involved with muscle contraction and provided strength to cells during stretching and compression? A)Microfilimants B)Intermediate filaments C)Microtubules D)Flagellaarrow_forwardWhen a prokaryote cell is placed in a hypertonic solution (water with a higher energy level compared to inside the cell), one would expect that H2O would: A) diffuse out of the cell through the lipid section of the phospholipid bilayer B) cause protein synthesis C) move using active transport proteins D) diffuse through Endoplasmic reticulum portal protein E) diffuse through portal proteins of the cell membranearrow_forwardWhich among the following defines GPI anchored proteins? 1)Integral proteins of the plasma membrane 2)Peripheral proteins of the plasma membrane 3)Proteins that bind to ion-gated channels in the plasma membrane 4)Proteins which randomly bind to lipids of the plasma membranearrow_forward
- The movement of liquid particles into a cell through the use of vesicles is known as: Facilitated diffusion Phagocytosis Pinocytosis Exocytosis Which of the following is NOT a structure involved in the movement of bacteria? Cilia Sex Pilus Flagellum Cell Wallarrow_forwardWhich of the following proteins is made by ribosomes that are free in the cytoplasm (NOT on bound ribosomes)? O A) proteins that remain in the cytoplasm as part of the cytoskeleton B) proteins that function inside mitochondria O C) proteins that are inserted into the plasma membrane O D) proteins that function inside a lysosome O E) proteins that are secreted from the cellarrow_forwardWhich of the follwoings represent the correct pathway of protein secretion? O Nucleus> RER > Transition vesicle > TGN > secretory vesicle > Exocytosis O Nucleus> RER > secretory vesicle > Golgi > transition vesicle > Exocytosis O Nucleus> RER > Transition vesicle > CGN > secretory vesicle > Exocytosis Nucleus> SER > Transition vesicle > Golgi > secretory vesilde > Exocytosis Ibron University Peport Abuse!arrow_forward
- Which of the following proteins is made by ribosomes that are free in the cytoplasm (NOT on bound ribosomes)? A) proteins that are inserted into the plasma membrane B) proteins that function inside mitochondria C) proteins that remain in the cytoplasm as part of the cytoskeleton D) proteins that function inside a lysosome E) proteins that are secreted from the cellarrow_forwardA major function of prokaryotic gas vesicles is to A) confer buoyancy on cells by decreasing their density. B) serve as a reservoir for oxygen and carbon dioxide. C) keep the cell's organelles separated during flagellar motion. D) store oxygen for aerobic growth when oxygen becomes depleted in the environment.arrow_forwardPlasmodesmata in plant cells are most similar in function to which of the following structures in animal cells? a) Tight junctions Ob) The cytoskeleton c) Desmosomes d) Gap junctions e) The extracellular matrixarrow_forward
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