The main structural characteristic of myosin molecules is: Select one: a. A beta-barrel b. A Fab domain c. An alpha helix d. The zinc finger domain e. A beta sheet

Q: Which of the following is not an example of a  point mutation? a. nonsense b. sense c. antisense…

A: Mutation is a molecular process that occurs spontaneously as well as by the effect of mutagens. It…

Q: With regard to the 30-nm fiber, a key difference between the solenoidand zigzag models isa. the…

A: Nucleosomes condenses into a compact structure and where it shortens the length of DNA into 30nm…

Q: What process in protein synthesis that is NOT affected by a silent mutation? Select one: a. Synapsis…

A: Each protein molecule has hundreds, if not thousands, of amino acids that are linked together in a…

Q: a. Give the name of the process illustrated in the figure. b. If this is part of the elongation…

A: The given image depicts the process of translation. The translation is the process in which the…

Q: 1. A protein has seven transmembrane domains, one loop to bind a ligand, one loop to bind a G…

A: Proteins are large biomolecules composed of amino acids linked together by peptide bonds. They are…

Q: Which of the following regions on the tRNA are composed of a sequence of nucleotides? a. anticodon…

A: The tRNA is responsible for transferring amino acids at the site of translation or protein…

Q: We could say that the functional equivalent of the TATA binding protein (TBP) in prokaryotes is:…

A: The transcription factor that  specifically binds  to a DNA sequence called the TATA box or TATA…

Q: Which of the following domains would you not expect to see in the receptor for BMP4? A. A…

A: BMP4 or Bone Morphogenetic Protein 4 is a protein that is encoded by BMP4 gene in humans. It is a…

Q: Certain introns can self-excise from RNA.   a. false   b. true

A: Rare introns that create a ribozyme self-splice, carrying out the tasks of the spliceosome by RNA…

Q: According to the adaptor hypothesis, is each of the following statements true or false? A. The…

A: Codons are the triplet nucleotide sequences either of RNA or DNA, which helps in binding specific…

Q: The anticodons are located in a.tRNA. b.rRNA. c.mRNA. d.ribosomes. e.endoplasmic reticulum.

A: Anticodons- An anticodon is a trinucleotide sequence complementary to that of a corresponding codon…

Q: Which of the following is true about a cystolic protein that was incorrectly sent to the Golgi…

A: Proteins are synthesized in the cell and then transported to their correct location. This process is…

Q: ADH causes cells of the kidneys to insert aquaporins (leak channels for water) into their membranes.…

A: Kidney plays an important role in maintaining the osmoregularity of the body or more precisely…

Q: biguitation lêdds to . Degradation of protein into amino cids =. Attack of ubiquinated protein by…

A: Ubiquitylation (sometimes called ubiquitination or ubiquitinylation) is an enzymatic…

Q: You are investigating the transport of proteins into the ER in various mutant cells. Where would you…

A: Transport into the endoplasmic reticulum (ER) is the important step inside the biosynthesis of…

Q: Which of the following statements about the spliceosome is false? a. A spliceosome splices pre-mRNA…

A: For RNA maturation there are about 40 different types of proteins and small RNAs that are called sn…

Q: The “A” site in the ribosome refers to the:     A. binding site for charged t-RNA molecules…

A: According to the question, we have to find out the function of the "A" site in the ribosome from the…

Q: t-RNA brings

A: Like all other cellular nucleic acids, transfer RNAs have a sugar-phosphate backbone. The…

Q: Which of the following arms of t-RNA is required for recognition of the t-RNA by its proper…

A:

Q: An example of a lipid-transfer protein found in late endosomes and lysosomes is _____. a. CD1a…

A: The correct answer is (e) CD1e

Q: A rare mutation can result in eukaryotic cells that causes a failure in the cell to synthesize the…

A: Signal Recognition Particle (SRP) is a ribonucleoprotein that identifies signal peptide-bearing…

Q: Synthesis of proteins occurs by the process of A. replication B. cytokinesis  C. translation D.…

A: Synthesis of proteins occurs with the help of transfer RNA, messenger RNA and ribosomes. These…

Q: Which of the following are true of nuclear trafficking? Select one or more: a. RAN-GTP (when bound…

A: Nuclear trafficking refers to the regulated transport of molecules between the cytoplasm and the…

Q: 8) Which of these describes the function of RNA polymerase? A. Amplifies the “message" by making…

A: Need to find which of the following is correct regarding RNA polymerase function.

Q: The enzyme Aminoacyl tRNA synthetase

A:

Q: Which of the following is most likely to have a small protein called ubiquitin attached to it?

A: Ubiquitin is a type of regulatory protein which is found in eukaryotic cells and help in various…

Q: With regard to the 30-nm fiber, a key difference between thesolenoid and zigzag models isa. the…

A: 30 nm fiber is a type of structure of chromatin named by the diameter of the helix which is 30 nm.…

Q: The sequence of amino acids at the 3’ end of a t-RNA molecule is which of the following? a. UGA b.…

A:

Q: Which of the following mutations is most likely?   a. Cytosine to Adenine   b. Guanine to Adenine…

A: When changes occur in our DNA sequence because of several reasons such mistakes while DNA copying…

Q: What molecule tags proteins for destruction by the proteasome? a. lysine b. ubiquitin c.…

A:

Q: The antibiotic binds reversibly to an allosteric site on the ribosome. Which of the following will…

A: In competitive inhibition, inhibitor binds to active site, in non-competitive inhibition, inhibitor…

Q: What is the role of ribosomes in protein synthesis? *   A. they carry proteins to the site of action…

A: Protein synthesis takes place in the cytoplasm. The mRNA is read in the pair of three bases at a…

Q: Which of the following best describes an observation/experiment from a model organism that has…

A: Model organisms are organisms that can be used as simple reference to study about various organisms.…

Q: A mutation in p21 that destroys its binding site will Select one: a. inhibit transcription of p21 b.…

A: Cyclin dependent kinases (CDKs) bind at the binding site of p21 and this binding leads to inhibition…

Q: Which part of a tRNA molecule acts as an amino acid attachment site?   a. the 5' end   b.…

A: tRNA (transfer ribonucleic acid) molecule escorts amino acids to their correct location in a…

Q: If a codon found in the mRNA sequence Tessa CGA, the tRNA anticodon that would bind to that codon…

A: In protein synthesis, the mRNA sequence is read in codons, or sets of three bases. These mRNA codons…

Q: Many different cellular processes are regulated by GTP binding proteins - a kind of molecular…

A: The vesicular transportation is the process by which a transporting vesicle is transported from a…

Q: You are studying a protein that you observe to be located in the ER and Golgi. You hypothesize that…

A: Introduction :- ER and Golgi are membrane bound organelles, which are present in the cytoplasm of a…

Q: In which of the following does nitrogenous base pairing (base complementarity via hydrogen bonds)…

A: Nitrogenous base pairing can include DNA-DNA, DNA-RNA, RNA-RNA pairing. Both DNA and RNA are made up…

Q: It is an example of natural mutation in cattle that enabled the creation of breeds such as…

A: A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic…

Q: Which of the following is true about the enzyme telomerase?   A. It is found only in adult cells.…

A: Telomeres are the ends of the linear chromosomes.

Q: The CFTR membrane protein hasS an alpha helix that spans the membrane. The amino acid sequence of…

A: The CFTR gene codes for a protein known as the cystic fibrosis transmembrane conductance regulator.…

Q: Enzymes that have binding sites for modulators are specifically called a. zymogens b. quaternary…

A: An enzyme modulator can be defined as a substance that binds to a receptor to change the receptor's…

Q: Nevirapine, an antiretroviral drug used to treat HIV acts as an uncompetitive inhibitor of the viral…

A: An antiviral medication called nevirapine is frequently used to treat HIV/AIDS. It is a member of…

Q: The advantage of yeast cells over bacterial cells to express human proteins is that: a. yeast cells…

A: DNA (deoxyribonucleic acid) is the genetic material in most organisms. Recombinant DNA (rDNA)…

Q: A.) There is no change in the DNA sequence if nucleotides are added or removed, it will have no…

A: D. Both A and B are incorrect. There is no change in the DNA sequence if nucleotides are added or…