What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 23, Problem 4MC
Summary Introduction
Introduction:
Proteins are what various cell components are composed of.
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Which of the following is NOT a function of proteins?
A. movement of muscles
B. provide structural components
stores the genetic information of a living organism
C. catalyze reactions in the cells
D. transport substances through the bloodstream
Which of the following can be used to synthesize fatty acids? a. Glucose c. Both a and b b. Amino acids d.Neither a nor b
Which of the following is true about the phosphorylation of proteins?
A. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains.
B. Phosphorylation of proteins is catalyzed by phosphatases.
C. Phosphoryation always activates enzymes.
D. The specificity in phosphorylation is conferred solely by the amino acid to be phosphorylated.
Chapter 23 Solutions
What Is Life? A Guide to Biology with Physiology
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- Which of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.arrow_forwardWhich of the following statements is False?a. Carbohydrates are the most efficient energy-storagemolecules by weight.b. Intrinsically disordered protein segments have mostlyhydrophilic amino acids.c. Nucleotides may act as energy-carrier molecules.d. Very acidic or salty solutions may denature proteins.arrow_forwardWhich of the following statements is false? a. Fiber is a polysaccharide that is completely or partially indigestible by the human body. b. A complete protein contains all of the essential amino acids. c. Saturated fats contain hydrogen atoms arranged on opposite sides of the carbon-carbon double bond. d. Linoleic and linolenic acid are essential fatty acidarrow_forward
- Which of the following is defined as the loss of a protein’s three-dimensional shape and function? A. Condensation B. Hydrolysis C. Metabolism D. Denaturationarrow_forwardWhich of the following describes a purpose of the glycosylation of proteins? A. Glycosylation tags a protein for destruction within a cell. B. Glycosylation is a process that causes cells to import new proteins from the extracellular space. C. Glycosylation indicates where a protein belongs within a cell. D. Glycosylation is the process of bonding amino acids to each other to build a protein.arrow_forwardDiet and nutrition are closely linked to the study of biomolecules. How should you monitor your food intake to ensure the cells in your body have the materials necessary to function?arrow_forward
- Which of the following might cause the denaturation of a protein? Select all that apply. A.)Highly acidic conditions B.)Highly basic conditions C.)High concentrations of salt D.)High heatarrow_forwardWhich of the following statements is TRUE? A) Monosaccharides are the building blocks of polypeptides.B) Nucleotides are the building blocks of saccharides.C) Carbohydrates are water soluble and responsible for short term energy storage.D) Amino acids are made of peptides.E) Fatty acids are responsible for DNA replicationarrow_forwardProtease acts on proteins to convert them into amino acids. Which of the following statements is correct? a. Protease is produced in the salivary glands. b. All of the answers. c. The enzyme is protease and amino acids are the products. d. Amino acid is the substrate which acts on the enzyme. e. Protease is the substrate while amino acids are the products.arrow_forward
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