EBK BIOLOGY
5th Edition
ISBN: 9780100667976
Author: Maier
Publisher: YUZU
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Textbook Question
Chapter 2, Problem 3AAATB
Carbon, oxygen, hydrogen, and nitrogen are common elements found in living organisms. Which two of the four types of macromolecules contain all four of these elements?
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Compare nucleic acids with polysaccharides. Which of the following is NOT true?
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A) Both have monomers that contain simple sugars.
B) Both function as structural support for cells.
C) Both types of molecules are organic.
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Which of the following are phospholipids: (a) triacylglycerols; (b) leukotrienes; (c) sphingomyelins; (d) fatty acids?
What portion of a phospholipid does not associate with water?
A.) the fatty acid tails
B.) glycerol
E.) entire molecule
D.) the phosphate group
Chapter 2 Solutions
EBK BIOLOGY
Ch. 2 - Prob. 1LTBCh. 2 - Prob. 2LTBCh. 2 - Prob. 3LTBCh. 2 - Prob. 4LTBCh. 2 - Prob. 5LTBCh. 2 - Which of the following terms is least like the...Ch. 2 - Different proteins are composed of different...Ch. 2 - Proteins may function as ___________ genetic...Ch. 2 - Prob. 9LTBCh. 2 - Eukaryotic cells differ from prokaryotic cells in...
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- Does the following structure best represent a carbohydrate, lipid, or a protein? H H3C-C-CH3 CH2 H2N C-COOH | H a) carbohydrate b) lipid c) proteinarrow_forwardDNA is composed of which are attached to each other by bonds. O A) nucleotides. phosphodiester O B) amino acids.. peptide C) monosaccharides. glycosidic O D) nucleotides. hydrogen O E) amino acids.. hydrogenarrow_forwardHow many amino acids and peptide bonds does a tetrapeptide have? A) four amino acids and three peptide bonds B) four amino acids and four peptide bonds C) three amino acids and four peptide bonds D) four amino acids and two peptide bondsarrow_forward
- A) Briefly describe the basic structure of phospholipids and explain how they can provide an effective barrier against the unregulated movement of molecules into or out of cells. B) Not all phospholipids are identical to one another. Describe two components (parts) of that can be altered to create variation between different phospholipids.arrow_forwardCarbons is used in cells for a) forming the charge across the membrane by serving a positive cations b) as the structural backbone of most molecules c) forming the second most common element D) none of thesearrow_forwardPlease discuss any two of the structures and functions of these 4 molecules. What do they have in common? How are they different? 1) Cellulose 2) Starch 3) Glycogen 4) Chitinarrow_forward
- A phospholipid is a biomolecule composed of a phosphate group that is bonded to two lipid chains. Which of the following correctly describes the nature of those two components? (a) The phosphate group is hydrophobic, and the lipid chains are hydrophilic. (b) Both the phosphate group and the lipid chains are hydrophilic. (c) Both the phosphate group and the lipid chains are hydrophobic. (d) The phosphate group is hydrophilic, and the lipid chains are hydrophobic.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_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
- How many different molecules composed of (a) two, (b) three, and (c) four amino acids, linked together by peptide bonds, can be made from the set of 20 naturally occurring amino acids?arrow_forward(a) What type of linkage is present in disaccharides?(b) Write one source and deficiency disease of vitamin B12.(c) Write the difference between DNA and RNA.arrow_forwardWhich of the following descriptions is the best for a phospholipid? a) a polar lipid molecule that fully interacts with water. b)A polar lipid molecule that is made nonpolar by the addition of a phosphate group. c) A lipid molecule that consists of two fatty acids, glycerol and a phosphate group, and is amphitheatric. d) A nonpolar lipid molecule that is made fully polar by the addition of a phosphate group so it can interact with water. e) a polar lipid molecule that fully repels water through all its parts.arrow_forward
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