Which of the following statements about globular proteins are true? - The protein folds to make...
Which of the following statements about globular proteins are true?
- The protein folds to make itself as compact as possible.
- The packing of the protein is such that hydrophilic residues appear on the surface where they can interact with an aqueous environment.
- β sheets are usually twisted, or wrapped into barrel structures.
- All parts of a globular protein can be classified as helix, β sheet, or turns.
| Only statement 3 is correct |
| Statements 1, 2, and 3 are correct. |
| Statements 1 and 2 are correct. |
| All of the listed statements are correct. |
Homework Answers
Which of the following statements about globular proteins are true?
- The protein folds to make itself as compact as possible.
- The packing of the protein is such that hydrophilic residues appear on the surface where they can interact with an aqueous environment.
- β sheets are usually twisted, or wrapped into barrel structures.
- All parts of a globular protein can be classified as helix, β sheet, or turns.
| Only statement 3 is correct |
| Statements 1, 2, and 3 are correct. |
| Statements 1 and 2 are correct. |
|
All of the listed statements are correct. Answer |
Statements 1, 2, and 3 are correct.
Add Answer to:
Which of the following statements about globular proteins are
true?
- The protein folds to make...
Mark all true statements about turns and loops: a They are generally located in the interior...
Mark all true statements about turns and loops: a They are generally located in the interior of proteins. b They can interact with other proteins and the environment. c Loops are found only on β sheets. d Loops exposed to an aqueous environment are usually composed of hydrophilic amino acids.
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and collagen. c)are usually water soluble. d)aggregate in aqueous media. e)are often made of β-pleated sheet and α-helix sections wrapped into compact structures. 2) Select all that apply. The Bohr effect: a)depends on the atomic orbital structure of hydrogen. b)can be summarized as a reduction in the oxygen affinity of hemoglobin with decreasing pH. c)is explained by the protonation of key amino acids, including the...
1. Which of the following statements is consistent with the structural motifs in 1OPF? This protein...
1. Which of the following statements is consistent with the
structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a
large parallel beta barrel.
This protein has quaternary structure, where each subunit is a
large antiparallel beta barrel.
This protein has tertiary structure, where each subunit is a
large antiparallel beta barrel.
This protein has quaternary structure, where each subunit is a
large parallel beta barrel.
3. Given the information in the PDB entry for 1OPF,...
Which of the following statements about protein structure is NOT correct? Why are proteins able to...
Which of the following statements about protein structure is NOT correct? Why are proteins able to buffer physiologic solutions over a wide range of pH? They contain many functional groups with different pK's They are macromolecules of high molecular weight They have many peptide bonds which are very resistant to hydrolysis by hydrogen or hydroxyl ions They have considerable secondary and tertiary structure which cause hydrogen ions to be sequestered The side chains of the amino acids with acidic functional...
Which of the following statements is true about X-ray diffraction? a) X-ray diffraction can be used...
Which of the following statements is true about X-ray diffraction? a) X-ray diffraction can be used for capturing protein dynamics b) the structure obtained from X-ray diffraction can contain crystal-packing artifacts c) X-ray diffraction can be used to obtain structures of intrinsically disordered proteins d) The x-ray beam is scattered primarily by the nuclei of atoms
Which of the following statements correctly matches a membrane protein with its function. -Structural proteins bind...
Which of the following statements correctly matches a membrane
protein with its function.
-Structural proteins bind to molecules to facilitate entry to
or exit from the cell.
-Carrier proteins form water-filled channels that allow
molecules to pass through.
-Channel proteins are classified as uniport, symport, or
antiport carriers.
-Receptors transmit signals from the extracellular environment
to the cytoplasm of the cell.
During the cephalic phase of gastric secretion,
-there is an increased flow of action potentials along the
vagus nerve...
ent: Ch 6 Post-Test ng: 0:08:06 wh6un15h_ch06.07m Which of the following statements about protein metabolism is...
ent: Ch 6 Post-Test ng: 0:08:06 wh6un15h_ch06.07m Which of the following statements about protein metabolism is NOT true? O a. Urea is the waste product of protein/amino acid metabolism. O b. Excess dietary protein can be used to produce energy. O c. Excess dietary protein decelerates kidney deterioration in people with kidney disease! d. Dietary proteins provide amino acids that the body cannot make by itself. O e sess dietary protein can be made into fat.
D Question 1 Opts Which of the following statements are NOT True about protein and the...
D Question 1 Opts Which of the following statements are NOT True about protein and the diet? Most adults require 0.8 grams of protein per kg Extra protein is necessary to build muscle Protein contains the nitrogen element Protein yields 4 kcal/g of energy A meal of beans and corn tortillas provides complete protein An essential amino acid can not be synthesized by the body Plant proteins are high quality protein Amino acids are the building blocks for protein Animal...
Which of the following statements about the unfolded protein response (UPR) in the endoplasmic reticulum (ER)...
Which of the following statements about the unfolded protein response (UPR) in the endoplasmic reticulum (ER) and Adult- Onset (Type II) diabetes is false? Answers A-D A All of these statements are correct. o B An unfolded protein response in reaction to increased insulin demand can result in programmed cell death in insulin-producing cells of the pancreas leading to Type Il diabetes. C High levels of insulin production can lead to the accumulation of misfolded proteins in the ER, inducing...
11.Which of the following mutations would most likely to disrupt the structure of an α-helix? Cys...
11.Which of the following mutations would most likely to disrupt the structure of an α-helix? Cys to Ala Lys to Arg Glu to Gly Val to Leu 12.Which amino acid combination is the most preferred to occupy positions 1 and 4 in an α-helix? Glu and Lys Phe and Pro Lys and Arg Asp and Glu 13.If each turn in the standard alpha helix extends 5.4 A and there are 3.6 amino acid residues per turn, how many amino acids...
1. Which of the following statements is consistent with the
structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a
large parallel beta barrel.
This protein has quaternary structure, where each subunit is a
large antiparallel beta barrel.
This protein has tertiary structure, where each subunit is a
large antiparallel beta barrel.
This protein has quaternary structure, where each subunit is a
large parallel beta barrel.
3. Given the information in the PDB entry for 1OPF,...
Which of the following statements about protein structure is NOT correct? Why are proteins able to buffer physiologic solutions over a wide range of pH? They contain many functional groups with different pK's They are macromolecules of high molecular weight They have many peptide bonds which are very resistant to hydrolysis by hydrogen or hydroxyl ions They have considerable secondary and tertiary structure which cause hydrogen ions to be sequestered The side chains of the amino acids with acidic functional...
Which of the following statements correctly matches a membrane
protein with its function.
-Structural proteins bind to molecules to facilitate entry to
or exit from the cell.
-Carrier proteins form water-filled channels that allow
molecules to pass through.
-Channel proteins are classified as uniport, symport, or
antiport carriers.
-Receptors transmit signals from the extracellular environment
to the cytoplasm of the cell.
During the cephalic phase of gastric secretion,
-there is an increased flow of action potentials along the
vagus nerve...
ent: Ch 6 Post-Test ng: 0:08:06 wh6un15h_ch06.07m Which of the following statements about protein metabolism is NOT true? O a. Urea is the waste product of protein/amino acid metabolism. O b. Excess dietary protein can be used to produce energy. O c. Excess dietary protein decelerates kidney deterioration in people with kidney disease! d. Dietary proteins provide amino acids that the body cannot make by itself. O e sess dietary protein can be made into fat.
D Question 1 Opts Which of the following statements are NOT True about protein and the diet? Most adults require 0.8 grams of protein per kg Extra protein is necessary to build muscle Protein contains the nitrogen element Protein yields 4 kcal/g of energy A meal of beans and corn tortillas provides complete protein An essential amino acid can not be synthesized by the body Plant proteins are high quality protein Amino acids are the building blocks for protein Animal...
Which of the following statements about the unfolded protein response (UPR) in the endoplasmic reticulum (ER) and Adult- Onset (Type II) diabetes is false? Answers A-D A All of these statements are correct. o B An unfolded protein response in reaction to increased insulin demand can result in programmed cell death in insulin-producing cells of the pancreas leading to Type Il diabetes. C High levels of insulin production can lead to the accumulation of misfolded proteins in the ER, inducing...
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