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 2MCQ
If Pseudomonas bacteria are supplied with radioactively labeled cytosine, after a 24-hour incubation period this cytosine would most likely be found in the cells’
- a. carbohydrates.
- b. DNA.
- c. lipids.
- d. water.
- e. proteins.
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The Archaeal cell membrane contains ---------------- lipids made up of ------------------- subunits.
Select one:
a. phytanyl, fatty acids
b. phytanyl, isoprene
c. phospholipids, fatty acids
d. phospholipids, isoprene
A single human body is made of around 10 trillion human cells working together. However, a single human body is Also home to 100 trillion bacterial cells. How can we have so many bacterial cans on and in our body and yet not look like walking balls of bacteria.
A. Bacterial cells are not alive
B. Bacterial cells are the same size as human cells can weigh significantly less and are transparent.
C. Bacterial cells are more than 10 times smaller than human cells.
Phospholipids are important components of
A. bacterial cell walls
B. ribosomes
C. carbohydrates
D. steroid lipids
E. lipid droplets
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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- Cholesterol is a _____ substance found in the ______ A. protein; Golgi apparatus. B. carbohydrate; cell membrane. C. protein; cell membrane. D. lipid; cell membrane. E. lipid; Golgi apparatus.arrow_forwardMembers of the mycoplasma genus of bacteria do not have a cell wall for protection, existing with only a simple cell membrane made up of fatty acids and phospholipids. They cannot however, synthesize their own fatty acids. How is this possible? A. They use host materials B. They use peptidoglycan from other bacteria C. They use anabolism as a way to create their outer membrane D. They use amino acids to build their membranesarrow_forwardStatements:(1) Fats and oils have the same general chemical structure.(2) Biological waxes have a three-component “block diagram.”(3) In facilitated transport, a substance crosses a cell membrane with the help of a protein “pump.” a. All three statements are true. b. Two of the three statements are true. c. Only one of the statements is true. d. None of the statements is true.arrow_forward
- Integral proteins are also known as Select one: a. Intrinsic proteins b. Glycosylated proteins c. Transmembrane proteins d. Bilayer proteinsarrow_forwardAlthough it will likely never be recognized by the general public, lipid nanoparticals are the unsung heros in the COVID-19 vaccines by Moderna and Pfizer. What properties of liposomes lend them to have a high clinical importance? a. Only hydrophilic molecules can be trapped inside such vesicles. b. They act as systemic drugs. c. They increase the amount of drug delivered across the body. d. Different molecules can be trapped inside such vesicles for efficient delivery. e. They are quite uniform in size.arrow_forwardGenetic information is transferred from the nucleus to cytoplasm by way of a. Hydrochloric acid O b. Dexyribonucleic acid O c. Ribonucleic acid d. Amino acidarrow_forward
- Which of following statements is true? A. Polar molecules cannot simply diffuse across the cell membrane. B. Non-polar molecules cannot simply diffuse across the cell membrane C. Polar molecules cannot enter the extracellular space. D. Non-polar molecules cannot enter the extracellular space.arrow_forwardA student uses iodine to visualize cells under the light microscope. Iodine stains starch deep blue and glycogen granules dark brown. Observation of the cells reveals the presence of cell walls, dark brown granules, mitochondria, and a prominent nucleus. If the chemical composition of the cell wall is determined, which of the following molecules would MOST likely be the major constituent? A. cellulose B. chitin C. lignin D. peptidoglycanarrow_forwardMatter can leave a cell by any of the following means except a. active transport. d. pinocytosis. b. simple diffusion. e. exocytosis. c. facilitated diffusionarrow_forward
- Define the following terms:a. supersecondary structureb. protomerc. phosphoproteind. denaturatione. ion exchange chromatographyarrow_forwardWhich of the following are essential components of cell membrane? a. Cholesterol b.Phospholipids c.Long chain polyunsaturated fatty acids d.All of the abovearrow_forwardDefine the following terms: a. genetic control b. proenzyme c. zymogen d. positive cooperativity e. negative cooperativityarrow_forward
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