Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 3, Problem 16RQ
The
- primary
- secondary
- tertiary
- quaternary
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Students have asked these similar questions
How many are the secondary structural elements in the protein below (Circle and label them)?
It is often the case that a helices are positioned in a protein such that one side faces the interior of the protein and the other, the surface of the protein. These are
said to be amphiphilic helices because they face different environments. Using a helical wheel projection (shown below), which of the peptide(s) below might form
an amphiphilic helix?
8
15
1
12
4
11
16
18
9
7
14
13
10
17
O SLIKSVIEMVDEWFRTFL
O FLIRVLRKVFRVLTRILS
O RLFRSRVLKIAVIRFLLI
Can you please identify what type of protein this is?
Chapter 3 Solutions
Biology 2e
Ch. 3 - Figure 3.5 What kind of sugars are these, aldose...Ch. 3 - Figure 3.23 Which categories of amino acid would...Ch. 3 - Figure 3.33 A mutation occurs, and cytosine is...Ch. 3 - Dehydration synthesis leads to formation of...Ch. 3 - During the breakdown of polymers, which of the...Ch. 3 - The following chemical reactants produce the ester...Ch. 3 - An example of a monosaccharide is fructose glucose...Ch. 3 - Cellulose and starch are examples of:...Ch. 3 - Plant cell walls contain which of the following in...Ch. 3 - Lactose is a disaccharide formed by the formation...
Ch. 3 - Which of the following is not an extracellular...Ch. 3 - Saturated fats have all of the following...Ch. 3 - Phospholipids are important components of...Ch. 3 - Cholesterol is an integral part of plasma...Ch. 3 - The monomers that make up proteins are called...Ch. 3 - The helix and the pleated sheet are part of...Ch. 3 - Mad cow disease is an infectious disease where one...Ch. 3 - A nucleotide of DNA may contain. ribose, uracil,...Ch. 3 - The building blocks of nucleic acids are ____. a....Ch. 3 - How does the double helix structure of DNA support...Ch. 3 - Why are biological macromolecules considered...Ch. 3 - What role do electrons play in dehydration...Ch. 3 - Amino acids have the generic structure seen below,...Ch. 3 - Describe the similarities and differences between...Ch. 3 - Why is it impossible for humans to digest food...Ch. 3 - Draw the ketose and aldose forms of a...Ch. 3 - Explain at least three functions that lipids serve...Ch. 3 - Why have trans fats been banned from some...Ch. 3 - Why are fatty acids better than glycogen for...Ch. 3 - Part of cortisol’s role in the body involves...Ch. 3 - Explain what happens if even one amino acid is...Ch. 3 - Describe the differences in the four protein...Ch. 3 - Aquaporins are proteins embedded in the plasma...Ch. 3 - What are the structural differences between RNA...Ch. 3 - What are the four types of RNA and how do they...
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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_forwardBelow is the structure of glycine. Draw a tripeptide composed exclusively of glycine. Label the N-terminus and C-terminus. Draw a box around the peptide bonds.arrow_forwardWhich of the following best describes how the secondary structure of a protein is formed? A B с D O=U a-helix H O=C N-H R-C-H C=0 H-N H-C-R O=C N-H R-C-H C=O H-N O-C N-H R-C-H C=O H-N N-H 0= H-C-R H-N C=O R-C-4 N-H O=C H-C-R 4-1 Ç=O R-C-H N-H 0=C H-C-R (=O R-C-H B-pleated sheet ionic bonds between the R groups of the polypeptide amino acids -Uh hydrogen bonds between the carboxyl and amino groups of non-adjacent amino acids covalent bonds between the carboxyl and amino groups of adjacent amino acids hydrogen bonds between the R groups of the polypeptide amino acidsarrow_forward
- A helical wheel is a two-dimensional representation of a helix, a view along its central axis. Label the blanks on the helical wheel diagram to show the distribution of amino acid residues in a helical segment with the sequence -Val-Asp-Arg-Val-Phe-Ser-Asn-Val-Cys-Thr-His-Leu-Lys–Thr-Leu-Gln-Asp-Lys- 1 Answer Bank H L D K R F T K S Tarrow_forwardWhich amino acid sequence will form part of which protein structure, and why? Sequence 1: Ser-Phe-Gln-Val-Lys-Leu-His-Tyr-Asp-Val Sequence 2: Glu-Tyr-Leu-Asn-Phe-Ala-Gln-Val-Leu-Arg __Amphipathic beta strand __ Amphipathic alpha helixarrow_forwardFigure shows pictures that represent the different levels of protein structure. Label the primary, secondary,tertiary, and quaternary structures.arrow_forward
- Which of these amino acid sequences will most likely favor the formation of a b-pleated sheet secondary structure?arrow_forwardDraw beta sheet with backbone hydrogen bonds, is this structure on the interior or exterior of the protein and why? Region 1: -Ser-Thr-Glu-His- Region 2: -Asp-Tyr-Lys-Asnarrow_forwardThe primary structure of a protein is shown below. Please answer the following questions. Leu-Arg-Ser-lle-Glu-Thr-Val-Val-Asn-Gln-Val-lle-Ser- Tyr a. Where is this section of the polypeptide most likely located [ Select ] completely embedded inside the protein partially exposed to the aqueous environment b. Is the above more likely an alpha helix or a beta-pleated sh completely exposed to the aqueous environment c. Which two amino acid residues are least likely to be in an alpha helix, but most likely to be a part of a beta turn? (Please select the amino acids in alphabetical order). [ Select ] [ Select ]arrow_forward
- Which of the following is the TRUE statement? When found together, a helices and B sheets are generally found in the same structural 'layer The B conformation is most stable when the individual segments are twisted in a left-handed direction Hydrophobic interactions make a large contribution to the stability of protein structures, therefor, burial of hydrophobic amino acid residues need at least two layers of secondary structure The backbone segment of a ß conformation polypeptide segment can readily H-bond to an a helix adjacent to itarrow_forwardWhich statement best describes the protein structure shown below? This is an alpha helix. This is a tertiary structure that consists almost entirely of beta strands. This is a tertiary structure consisting of a roughly equal mixture of alpha helices and beta sheets. This is a beta sheet. This is a tertiary structure that consists almost entirely of alpha helices.arrow_forwardAmong the secondary structures, which is most likely to form globular structures resulting from interactions between polypeptide chains? a-helices beta-pleated sheets Collagen helices turns or random structures cannot be determinedarrow_forward
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