Beta-sheets are roughly planar structures, in which the backbone hydrogen bonding pattern defines the plane. Where are the side chains in a sheet? Select one: a. The side-chains are on the outside of the sheet. b. The side-chains are in the plane of the sheet, with residues from one chain on one side of the sheet, and residues from the other chain being on the other side. The side-chains do not have a consistent pattern. O d. The side-chains are perpendicular to the plane of the sheet, with residues from one chain being above and residues from the other being below the plane of the sheet. C. O e. The side-chains are perpendicular to the plane of the sheet, with residues from each chain alternating between above and below the plane of the sheet. O f. The side-chains are in the plane of the sheet, with residues from each chain alternating being on one side o the other of the sheet. g. Beta-sheets are rarely observed in proteins.

Beta-sheets are roughly planar structures, in which the backbone hydrogen bonding pattern defines the plane. Where are the side chains in a sheet? Select one: a. The side-chains are on the outside of the sheet. b. The side-chains are in the plane of the sheet, with residues from one chain on one side of the sheet, and residues from the other chain being on the other side. The side-chains do not have a consistent pattern. O d. The side-chains are perpendicular to the plane of the sheet, with residues from one chain being above and residues from the other being below the plane of the sheet. C. O e. The side-chains are perpendicular to the plane of the sheet, with residues from each chain alternating between above and below the plane of the sheet. O f. The side-chains are in the plane of the sheet, with residues from each chain alternating being on one side o the other of the sheet. g. Beta-sheets are rarely observed in proteins.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter9: Gene Expression And Gene Regulation

Section: Chapter Questions

Problem 19QP: Below is the structure of glycine. Draw a tripeptide composed exclusively of glycine. Label the...

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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 quaternary
Explain what happens if even one amino acid is substituted for another in a polypeptide chain. Provide a specific example.
a. Can a mutation change a proteins tertiary structure without changing its primary structure? b. Can a mutation change a proteins primary structure without affecting its secondary structure?
Describe 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?
The first and major effect in denaturation of proteins is that: a. peptide bonds break. b. helices unwind. c. sheet structures unfold. d. tertiary structure is changed. e. quaternary structures disassemble.
Figure 3.5 What kind of sugars are these, aldose or ketose?
Which of the following is a functional group that is part of a building block of proteins? phosphate adenine amino ribose
PREDICT Do any of the amino acid side groups shown below have the potential to form an ionic bond with any of the other side groups shown? If so, which pair(s) could form such an association? (a)CH3 (b)CH2 COO (c)CH2 CH2 NH3+ (d)CH2 CH2 COO (e)CH2 OH
Pyrimidines built from a single carbon ring are: a. cytosine and thymine. b. adenine, cytosine, and guanine. c. adenine and thymine. d. cytosine and guanine. e. adenine and guanine.
Uracil ________. contains nitrogen is a pyrimidine is found in RNA all of the above
A beginning genetics student is attempting to complete an assignment to draw a base pair from a DNA molecule. The drawing is incomplete, and the student does not know how to finish. He asks for your advice. The assignment sheet shows that the drawing is to contain three hydrogen bonds, a purine, and a pyrimidine. From your knowledge of the pairing rules and the number of hydrogen bonds in A/T and G/C base pairs, what base pair do you help the student draw?
Using Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw the complementary dinucleotide in an antiparallel fashion. Connect the dinucleotides with the appropriate hydrogen bonds. FIGURE 8.9 The two polynucleotide chains in DNA run in opposite directions. The left strand runs 5 to 3, and the right strand runs 3 to 5. The base sequences in each strand are complementary. An A in one strand pairs with a T in the other strand, and a C in one strand is paired with a G in the opposite strand. FIGURE 8.7 Nucleotides can be joined together to form chains caled polynucleotides. Polynucleotides are polar molecules with a 5 end (at the phosphate group) and a 3 end (at the sugar group). An RNA polynucleotide is shown at the left, and a DNA polynucleotide is shown at the right.