Microbiology: Principles and Explorations
9th Edition
ISBN: 9781118743164
Author: Jacquelyn G. Black, Laura J. Black
Publisher: WILEY
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Chapter 6, Problem 9SQ
Some bacteria have complex nutritional requirements because they:
- (a) Are composed of a large number of different types of molecules
- (b) Can make a great many of the molecules found in the cell from simple precursors
- (c) Have many different enzymes and therefore can make many molecules
- (d) Contain unique molecules not normally found in bacterial cells
- (e) Lack many enzymes and must therefore be provided with many of the molecules they need for growth
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Bacteria make exoenzymes in order to:(a) Make structures within the bacterium(b) Synthesize large molecules of carbohydrates, proteins,and nucleic acids(c) Hydrolyze large molecules to smaller ones so that theycan be transported into the bacterium(d) Synthesize molecules needed by fastidious organisms(e) None of the above; bacteria do not make exoenzymes
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Chapter 6 Solutions
Microbiology: Principles and Explorations
Ch. 6 - What are the differences between the lag phase and...Ch. 6 - How does logarithmic rate of increase differ from...Ch. 6 - Prob. 1.3SCCh. 6 - Why does a direct microscopic count of bacteria...Ch. 6 - What does the ending -phile mean? Distinguish...Ch. 6 - What enzymes do most obligate anaerobes lack? How...Ch. 6 - Prob. 2.3SCCh. 6 - Prob. 3.1SCCh. 6 - Distinguish between the various kinds of media:...Ch. 6 - What is the purpose of a stock culture? Why is it...
Ch. 6 - Prob. 1CCSCh. 6 - Exactly 100 bacteria with a generation time of 30...Ch. 6 - In the above example, do you think that the number...Ch. 6 - Prob. 3CTQCh. 6 - Prob. 1SQCh. 6 - Match the following growth phase terms to their...Ch. 6 - Which of the following is the best definition of...Ch. 6 - Prob. 4SQCh. 6 - The most probable number (MPN) technique is a...Ch. 6 - Match the terms with their definitions:Ch. 6 - Prob. 7SQCh. 6 - Why do foods containing a high concentration of...Ch. 6 - Some bacteria have complex nutritional...Ch. 6 - Prob. 10SQCh. 6 - Which type of cell will shift to aerobic...Ch. 6 - Which of the following statements about endospores...Ch. 6 - Prob. 13SQCh. 6 - Blood agar is often used to observe changes in the...Ch. 6 - A bacterial medium that contains 20 grams of beef...Ch. 6 - MacConkey agar contains the dye, crystal violet,...Ch. 6 - Prob. 17SQCh. 6 - What are the purposes of carrying out the streak...Ch. 6 - Prob. 19SQCh. 6 - During quorum sensing, bacteria sense their...Ch. 6 - Prob. 21SQCh. 6 - Identify the position of each of the following on...
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- Which of the following BEST represents the function of DNA in a cell? A) to provide structure and support to the cell B) to store genetic information C) to speed up the rate of reactions in the cell D) to digest macronutrients in the cell’s cytoplasmarrow_forwardThe lysosome O a) is a vesicle for food b) contains oxidase enzymes. c) adds carbohydrate chains to proteins. d) has ribosomes for making proteins e) has a pH of about 5.arrow_forwardO 1) 2) 3) 4) Which sequence represents the correct order of events for the production of necessary complex molecules after food is taken in by a multicellular animal? A) digestion absorption-circulation diffusion →→→ synthesis B) diffusion-synthesis circulation C) synthesis → digestion circulation D) circulation absorption diffusion-synthesis →→ digestion The interaction of which two systems provides the molecules needed for the metabolic activity that takes place at ribosomes? absorption → digestion →→ absorption →→→diffusion A) reproductive and excretory B) respiratory and muscular C) digestive and circulatory D) Immune and nervous A) form the acids that break down food B) form proteins needed in the stomach C) change food materials into wastes that can be passed out of the body D) change food substances into molecules that can pass into the bloodstream and cells Metabolic Activity A BBBB PROTEIN Letters A and Bare best represented by which row in the chart? The diagram below…arrow_forward
- ATP is : A) produced in the mitochondria of cells B) produced in the nucleus of cells C) produced outside of the cells D) produced only in response to exercisearrow_forwardWhich is true of ribosomes found in eukaryotic cells? They: A) contain DNA B) synthesize carbohydrates C) are attached to the Rough Endoplasmic reticulum (RER) and carry out the synthesis of proteins D) are found inside the endoplasmic reticulum E) are originally found associated with the endoplasmic reticulum in prokaryotic cells.arrow_forwardWhich of the following is one of the main end products of eukaryotic cellular aerobic respiration (Krebs cycle)? A) Pyruvate B) O2 C) ADP, D) Starch, E) none of these are main end products.arrow_forward
- The energy associated with ATP synthesis in eukaryote cells originates in the: A) mitochondrion as O2, B) in the nucleus as a gene in the DNA, C) as light absorbed by chlorophyll of a cell, D) In the mitochondrion stored as glycogen molecules, E) Fat stored in a Liposomearrow_forwardInsulin, a biological macromolecule (a protein), is a polymer produced by the beta cells of the pancreas. Given the characteristics of the original, primitive Prokaryote cells, which of the following is likely to be true? a) This polymer is a linear sequence (Chain) of amino acids b) The monomers are linked by dehydration synthesis. c) When the monomers are connected to form the polymer using the process of dehydration synthesis a covalent bond links the monomers, d) The structure of this type of polymer presents the R groups as extending off of the chain, e) All are true.arrow_forwardThe instructions for making proteins come from the genetic material (DNA). The instructions for making the proteins that a cell needs are found in the A) mitochondria B) Golgi apparatus C) rough ER D) nucleusarrow_forward
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Microbial Nutrition and Growth; Author: Scientist Cindy;https://www.youtube.com/watch?v=rK3UkyWjkl8;License: Standard YouTube License, CC-BY