Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3FTB
Proteins are synthesized by a reaction called synthesis, which releases ________. Subunits of proteins are called _____. The sequence of protein subunits is called the structure of the protein. Two regular configurations of secondary protein structure are and ______. When a protein's secondary or higher-order structure is destroyed, the protein is said to be ________.
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Proteins are synthesized by a reaction called__________synthesis, which releases______________ . Subunits of proteins are called________ . The sequence of protein subunits is called the_________ structure of the protein. Two regular configurations of secondary protein structure are__________ and________ . When a protein’s secondary or higher-order structure is destroyed, the protein is said to be__________ .
At what level of protein structure (primary, secondary, tertiary, or quaternary) will protein structure be initially altered?
Heating a protein (due to fever), causing hydrogen bonds to break.
Drastic changes in pH (like the above patients), causing some polar amino acids to turn into non-polar amino acids
Which statement about quaternary structure is TRUE?
Quaternary structure is unaffected by acids or heat.
Quaternary structure is determined by the same interaction that holds an α-helix together.
Quaternary structure is how prosthetic groups are held in a protein.
Quaternary structure is the position of subunits in the overall structure of a protein.
All proteins have quaternary structure
Chapter 3 Solutions
Biology: Life on Earth (11th Edition)
Ch. 3 - 1. Polar molecules
a. dissolve in lipids.
b. are...Ch. 3 - Which match is correct? a. monosaccharide-sucrose...Ch. 3 - 3. Which of the following statements is...Ch. 3 - Which of the following is not composed of...Ch. 3 - Prob. 5MCCh. 3 - 1. In organic molecules made of chains of...Ch. 3 - Prob. 2FTBCh. 3 - Proteins are synthesized by a reaction called...Ch. 3 - 4. A nucleotide consists of three parts: ______...Ch. 3 - 5. Fill in the following with the appropriate type...
Ch. 3 - Prob. 1RQCh. 3 - List the four principal classes of biological...Ch. 3 - What roles do nucleotides play in living...Ch. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Describe the synthesis of a protein from amino...Ch. 3 - Where in nature do we find cellulose? Where do we...Ch. 3 - Based on their structure, sketch and explain how...Ch. 3 - Prob. 2ACCh. 3 - In an alternate universe where people could digest...
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- Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary and secondary (b) primary and tertiary (c) secondary, tertiary, and quaternary (d) primary, secondary, and tertiary (e) primary, secondary, tertiary, and quaternaryarrow_forwardMatch the terms related to protein building.arrow_forwardDescribe the four levels of protein structure. How do a proteins side groups influence its interactions with other substances? What happens when a protein is denatured?arrow_forward
- Which of the following statements is not true about protein folding ? * Protein folding is a process by which a polypeptide chain form a stable 3D structure. Protein folding leads to loss of function and causes a wide range of diseases When protein is defolded, peptide bonds are not affected. Protein folding is essential for proper function of proteins.arrow_forwardSelect the true statements about protein secondary structure. In an a-helix, the side chains are located on the outside of the helix. The secondary level of protein structure refers to the spatial arrangements of short segments of the protein. In a B-pleated sheet, the side chains are located between adjacent segments. Peptide bonds stabilize secondary structure. The x-helix is held together by hydrogen bonds between the amide N-H and C=O groups. Incorrectarrow_forwardProtein structure is determined solely by a protein’s amino acid sequence. Should a genetically engineered protein in which the original order of all amino acids is reversed have the same structure as the original protein?arrow_forward
- Why is it important for a protein to maintain its structure? What is it called when a protein loses its structure?arrow_forwardProteins undergo  a process, called folding to establish their final, functional configuration. Amino acids them selves are covalently, bound to gather, but for other forces are needed to maintain a functional proteins structure. Briefly describe these forces.arrow_forwardA friend, while frying some eggs, points to the change in the egg white (which contains a protein called albumin) and explains that if the conformation of a protein changes, it will no longer have the same properties and will lose its ability to function. Do you agree or disagree with this statement?arrow_forward
- Describe as completely as possible, the four levels of protein What type of bonds hold a protein together at the primary level? What type of bonds maintain the protein at the secondary and tertiary level? Give an example of secondary, tertiary, and quarternary level proteins. At which level is the protein functional? What happens (at a molecular level) when a protein is denatured?arrow_forwardIn protein synthesis, adenine pairs with ________________________, and guanine pairs with ________________________. Multiple Choice uracil; cytosine adenine; guanine None of the answer choices are correct. thymine; cytosine thymine; uracilarrow_forwardThere are four levels of protein structures. Name those four levels and briefly describe themarrow_forward
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