Which of the following statements about a protein domain is FALSE? Each protein contains at least...
Which of the following statements about a protein domain is FALSE?
| Each protein contains at least one domain but may contain several domains. |
| Within a single protein, different domains may serve different functions, such as ligand-binding or catalysis. |
| Domains may have resulted from exons of different genes, which were reshuffled during evolution. |
| A domain consists of a single type of secondary structure. |
Homework Answers
4rth one is absolutely incorrect answer because domain have tertiary structure.
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Which of the following statements about a protein domain is
FALSE?
Each protein contains at least...
Which of the following statements is INCORRECT about enhancers. O A. The location and orientation of...
Which of the following statements is INCORRECT about enhancers. O A. The location and orientation of the enhancer is non-specific (they are functional regardless of their general location around an within a gene). B. Both activator and repressor proteins can bind to an enhancer. C.Enhancers can only exert their effect in one direction along the DNA. D. Enahncers can bind proteins to affect the architecture (structure) of the DNA. Reset Selection Question 5 of 5 Select all of the following...
Which of the following statements are true about protein domains? I. Polypeptide chains longer than 200...
Which of the following statements are true about protein domains? I. Polypeptide chains longer than 200 amino acids in length have multiple domains. II. Domains are tertiary structural components of proteins. III. Different domains are encoded by different exons of a gene. IV. Each domain in a protein has a specific function. A. I, II, III, and IV B. I, II, and III C. II, III, and IV D. II and IV E. I and IV
please answer all. 14. [6 pts) Indicate which of the following statements is True (T) or...
please answer all.
14. [6 pts) Indicate which of the following statements is True (T) or False (F) When water interacts with hydrophobic molecules, it becomes more ordered and entropy of the system increases The hydrophobic effect is predominant in protein stability The Ramachandran ploy shows combinations of dihedral angles in a polypeptide chain. A proteins function is directly related to the protein's secondary structure. The B sheet is primarily stabilized by R group interactions Clusters of secondary structures are...
Which of the following statements accurately describe receptor tyrosine kinases (RTKs)? There is more than one...
Which of the following statements accurately describe receptor tyrosine kinases (RTKs)? There is more than one correct answer. Select all the true statements. A) A ligand binds to the extracellular domain. B) RTKs are usually (but not always) monomeric in the absence of ligand. C) Ligand binding is required for autophosphorylation (cross-phosphorylation). D) The intracellular domain has phosphatase domains. E) The alpha subunit contains seven alpha helices that span the membrane. F) The structure includes a transmembrane helix.
Which of the following statements regarding genes is false? a) Genes are located on chromosomes b)...
Which of the following statements regarding genes is false? a) Genes are located on chromosomes b) Genes consist of a long sequence of DNA c) In sexually reproducing species each cell contains a single copy of every gene d) Genes contain information for the production of a single protein e) none of the above
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...
Identify which statements about denaturation are true and which are false. True statements False statements Answer...
Identify which statements about denaturation are true and which are false. True statements False statements Answer Bank A denatured protein has a different primary structure than its native state. Cooking an egg hydrolyzes its albumin. Denaturation and digestion refer to the same process. Digestive enzymes hydrolyze proteins. Soaking fish in lime juice (PH 2.3) denatures the proteins, A denatured protein has a different tertiary structure than its native state, Egg white meringue, made by beating egg whites, contains denatured proteins
Question 6 Which of the following statements regarding a protein with 4 domains must be true?...
Question 6 Which of the following statements regarding a protein with 4 domains must be true? A protein with 4 domains must have 4 different kinds of secondary structures. O A protein with 4 domains must be composed of 4 polypeptide chains. A protein with 4 domains must have 4 regions that fold independently. A protein with 4 domains must have a quaternary structure. Question 7 Histone proteins are typically... o rich in disulfide bonds O composed of a random...
Species within the Domain Archaea are distinct from Domain Eubacteria for several reasons, but which traits...
Species within the Domain Archaea are distinct from Domain Eubacteria for several reasons, but which traits are similar between the major unicellular domains? Ether linked bonded membrane c. Presence of Histone proteins Peptidoglycan cell walls d. 70S Ribosomes Evolution through natural selection has occurred for billions of years and is the method by which new species are created. Which is NOT a key feature promoting speciation? Low genetic variation c. Adaption & mutation Habitat isolation d. Gene pool pressure &...
Which one of the following statements is false? a. Many growth factor receptors are tyrosine kinases....
Which one of the following statements is false? a. Many growth factor receptors are tyrosine kinases. b. SH2 is an example of a protein domain that has high affinity binding for phosphorylated EGFR. c. Raf initiates a serine/threonine kinase cascade. d. Raf is activated by the kinase activity of RAS. Which one of the following statements is true? a. Retroviruses are a major cause of human cancers. b. Proto-oncogenes are altered forms of normal genes. c. Oncogenic activation of receptor...
Which of the following statements is INCORRECT about enhancers. O A. The location and orientation of the enhancer is non-specific (they are functional regardless of their general location around an within a gene). B. Both activator and repressor proteins can bind to an enhancer. C.Enhancers can only exert their effect in one direction along the DNA. D. Enahncers can bind proteins to affect the architecture (structure) of the DNA. Reset Selection Question 5 of 5 Select all of the following...
please answer all.
14. [6 pts) Indicate which of the following statements is True (T) or False (F) When water interacts with hydrophobic molecules, it becomes more ordered and entropy of the system increases The hydrophobic effect is predominant in protein stability The Ramachandran ploy shows combinations of dihedral angles in a polypeptide chain. A proteins function is directly related to the protein's secondary structure. The B sheet is primarily stabilized by R group interactions Clusters of secondary structures are...
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...
Identify which statements about denaturation are true and which are false. True statements False statements Answer Bank A denatured protein has a different primary structure than its native state. Cooking an egg hydrolyzes its albumin. Denaturation and digestion refer to the same process. Digestive enzymes hydrolyze proteins. Soaking fish in lime juice (PH 2.3) denatures the proteins, A denatured protein has a different tertiary structure than its native state, Egg white meringue, made by beating egg whites, contains denatured proteins
Question 6 Which of the following statements regarding a protein with 4 domains must be true? A protein with 4 domains must have 4 different kinds of secondary structures. O A protein with 4 domains must be composed of 4 polypeptide chains. A protein with 4 domains must have 4 regions that fold independently. A protein with 4 domains must have a quaternary structure. Question 7 Histone proteins are typically... o rich in disulfide bonds O composed of a random...
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