NESTER'S MICROBIOLOGY
9th Edition
ISBN: 9781264826940
Author: Anderson
Publisher: MCG
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Textbook Question
Chapter 2, Problem 10MC
The function of a buffer is to
a) bring the pH of a solution to neutral.
b)
c) interact with phospholipid molecules to form a cell membrane.
d) stabilize the pH of a solution.
e) provide energy for synthesis of ATP.
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Which of the following is true of the molecule pictured below?
A) It will spontaneously form into biological membranes.
B) It would be liquid at room temperature because it contains unsaturated fatty acids.
C) It would be solid at room temperature because it contains only saturated fatty acids.
D) It would be liquid at room temperature because it contains only saturated fatty acids.
E) It would be solid at room temperature because it contains unsaturated fatty acids.
Which type of interaction commonly persists even after urea is added to proteins for denaturation?
a) Disulfide bonds
b) Ionic interactions
c) Hydrophobic interactions
d) Hydrogen bonds
What reagent present in the protein sample buffer is important for breaking disulfide bonds?
a) 2-mercaptoethanol
O b) chloride ions
O c) glycine
O d) SDS
Chapter 2 Solutions
NESTER'S MICROBIOLOGY
Ch. 2 - Differentiate between an atom, a molecule, and a...Ch. 2 -
2. Why is water a good solvent?
Ch. 2 - Which solution is more acidic, one with a pH of 4...Ch. 2 - Prob. 4SACh. 2 - Prob. 5SACh. 2 - What is a structural isomer?Ch. 2 - Name the major groups of lipids and give an...Ch. 2 - List six functions of proteins.Ch. 2 -
9. What are the four levels of protein structure,...Ch. 2 - How do DNA and RNA differ from one another in...
Ch. 2 - Choose the list that goes from the lightest to the...Ch. 2 -
2. An oxygen atom has an atomic number of 8. It...Ch. 2 - Dehydration synthesis is involved in the synthesis...Ch. 2 - The primary structure of a protein relates to its...Ch. 2 -
5. Pure water has all of the following properties...Ch. 2 - When the pH of a solution changes from 3 to 8, the...Ch. 2 - A shortage of nitrogen (N) would make it most...Ch. 2 - Complementarity plays a major role in the...Ch. 2 - Prob. 9MCCh. 2 - The function of a buffer is to a) bring the pH of...Ch. 2 - A group of prokaryotes known as thermophiles...Ch. 2 -
2. Microorganisms use hydrogen bonds to attach to...Ch. 2 - What properties of the carbon atom make it ideal...Ch. 2 -
2. A biologist determined the amounts of several...Ch. 2 - The table on the right indicates the freezing and...
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- Which of the following fatty acid has 16 carbon atoms?a) Linolenic acidb) Oleic acidc) Palmitic acidd) Stearic acidarrow_forwardWhich of the following is a storage form of lipid?a) Glycolipidb) Phospholipidc) Sufolipidd) Triacyl glycerolarrow_forwardHow many types of lipid aggregates are formed when amphipathic lipids are mixed with water?a) 1b) 2c) 3d) 4arrow_forward
- Which of the following factors is responsible for the denaturation of proteins? * O a) Heat Ob) Organic solvents Oc) Violent shaking O d) All of themarrow_forwardWhich of the following is false about lipids?a) They are either strongly hydrophobic or amphipathicb) They are more soluble in waterc) Extraction of lipids from tissues require organic solventsd) They are insoluble in waterarrow_forwardWhich of the following reactions takes place by dehydration synthesis? Which of them takes place by hydrolysis? a) The addition of an amino acid to a growing peptide chain. b) The addition of a nucleotide to a growing nucleic acid chain. c) The removal of an amino acid from a protein chain. d) The digestion of starch into glucose monomers. e) The conversion of alpha-glucose into beta-glucose (be careful with this one!)arrow_forward
- a.) Explain how DFD meat has a high water holding capacity but is described as dry? b.) Why is it important to have relaxed animals together? c.) What is the difference between amylose and cellulose?arrow_forwardWhen phospholipids are carefully mixed with water they are observed to exhibit which of the following properties? a) Spontaneous organization into stable structures within the water environment, b) Orientation of the Phosphate parts of the molecule away from fatty acid (non-polar) environment of a bilayer, c) Hydrophilic orientation of the ionic section of the phospholipid molecules to the polar portions of the water molecules, d) All are true, e) None are true.arrow_forward___ fatty acid chain length, as well as ___ the number of double bonds has the effect of increasing the fluidity of phospholipids that contain them. a) Increasing; decreasing b) Decreasing; decreasing c) Increasing; increasing d) Decreasing; increasingarrow_forward
- Electrolytes that release hydrogen ions in water are Group of answer choices A) bases. B) nucleotides. C) acids. D) electrons.arrow_forward1. Which one of the following is NOT an important functional group or linkage in biomolecules? A) Phosphodiester B) Hemiketal C) Thiol D) Lipid E) Phosphoanhydridearrow_forwardWhat type of macromolecule is an enzyme? A) Proteins B) Saturated fats C) Phospholipids D) Lipidsarrow_forward
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