Description : Where is eukaryotic ribosomal RNA transcribed? -Biology
Last Answer : answer:
Description : Eukaryotic initiation factors 4A, 4B and 4F bind to (A) 40 S ribosomal subunit (B) 60 S ribosomal subunit (C) mRNA (D) Amino acyl tRNA
Last Answer : Answer : C
Description : AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed m RNA.
Last Answer : AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the ... AGGUAUCGCAU B. UGGTUTCGCAT C. ACCUAUGCGAU D. UCCAUAGCGUA
Description : Match the following RNA polymerase with their transcribed products : 1. RNA polymerase I (i) tRNA 2. RNA polymerase II (ii) rRNA 3. RNA polymerase III (iii) hnRNA Select the correct option from the following : (a) 1-i, 2-iii, 3-ii (b) 1-i, 2-ii, 3-iii (c) 1-ii, 2-iii, 3-i (d) 1-iii, 2-ii, 3-i
Last Answer : (b) 1-i, 2-ii, 3-iii
Description : Select the incorrect statement out of the five given below about lac operon when Lactose is present in the medium. a) Gene - A gets transcribed into mRNA which produces β-galactoside permease b) ... polymerase transcribe Z-gene, Y-gene and A-gene e) Allolactose is the inducer of lac operon
Last Answer : Gene – A gets transcribed into mRNA which produces β-galactoside permease b) Inducer-Repressor complex is formed
Description : During transcription, do both strands of DNA get transcribed into a double stranded RNA molecule?
Last Answer : No. RNA is single stranded and is transcribed from only one of the DNA strands. DNA replication does make copies of both strands.
Description : Where is rRNA (ribosomal RNA) located? -Biology
Description : What is the function of the ribosomal RNA (rRNA)?
Last Answer : A: rRNA is a component of ribosomes, which are responsible for synthesizing proteins.
Description : Ribosomal RNA is actively synthesized in :-
Last Answer : Ribosomal RNA is actively synthesized in :- A. Nucleoplasm B. Ribosomes C. Lysosomes D. Nucleolus
Description : What is the Structure in the nucleus responsible for forming ribosomal RNA?
Last Answer : Feel Free to Answer
Description : Ribozymes are (A) Enzymes present in ribosomes (B) Enzymes which combine the ribosomal subunits (C) Enzymes which dissociate (D) Enzymes made up of RNA
Last Answer : Answer : D
Description : The newly entering amino acyl tRNA into A site requires (A) EF-II (B) Ribosomal RNA (C) mRNA (D) EF-I
Description : mRNA is complementary to the nucleotide sequence of (A) Coding strand (B) Ribosomal RNA (C) tRNA (D) Template strand
Last Answer : Answer : A
Description : Thymine is present in (A) tRNA (B) Ribosomal RNA (C) Mammalian mRNA(D) Prokaryotic mRNA
Description : In mammalian cells, ribosomal RNA is produced mainly in the (A) Nucleus (B) Nucleolus (C) Ribosome (D) Golgi apparatus
Last Answer : Answer : B
Description : The mechanism of antibacterial action of tetracycline involves (a) Binding to a component of the 50S ribosomal subunit (b) Inhibition of translocase activity (c) Blockade of binding of ... (d) Selective inhibition of ribosomal peptidyl transferases (e) Inhibition of DNA-dependent RNA polymerase
Last Answer : Ans: C
Description : Ribosomal RNA is actively synthesised in (a) lysosomes (b) nucleolus (c) nucleoplasm (d) ribosomes.
Last Answer : (a) lysosomes
Last Answer : (b) nucleolus
Description : Which of the following is true for nucleolus? (a) Larger nucleoli are present in dividing cells. (b) It is a membrane-bound structure. (c) It takes part in spindle formation. (d) It is a site for active ribosomal RNA synthesis.
Last Answer : (d) It is a site for active ribosomal RNA synthesis.
Description : _______ was first used to catalog organisms into one of three domains. a. Photosynthesis b. Ribosomal RNA genes c. Nuclear DNA genes d. Mitochondrial DNA genes
Last Answer : b. Ribosomal RNA genes
Description : Which of the following is true for nucleolus ? (1) Larger nucleoli are present in dividing cells. (2) It is a membrane-bound structure. (3) It takes part in spindle formation. (4) It is a site for active ribosomal RNA synthesis.
Last Answer : (4) It is a site for active ribosomal RNA synthesis.
Description : Statement A : The primary transcript produced in eukaryotic is translated without undergoing any modification or processing. Statement B: The hn-RNA i
Last Answer : Statement A : The primary transcript produced in eukaryotic is translated without undergoing any ... If both assertion and reason are false.
Description : All of the following statements about eukaryotic promoters are true except (A) They may be located upstream or down stream from the structural gene (B) They have two consensus sequences ( ... (D) Mutations in promoter region can decrease the efficiency of transcription of the structural gene
Description : All of the following statements about bacterial promoters are true except (A) They are smaller than eukaryotic promoters (B) They have two consensus sequences upstream from the transcription star site (C) ... is the site for attachment of RNA polymerase (D) TATA box has a high melting temperature
Description : In RNA moleule ‘Caps’ (A) Allow tRNA to be processed (B) Are unique to eukaryotic mRNA (C) Occur at the 3’ end of tRNA (D) Allow correct translation of prokaryotic mRNA
Description : In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the (a) ribosomes (b) nucleus (c) dictyosomes (d) ER
Last Answer : (a) ribosomes
Description : Which one of the following is common between prokaryotic and eukaryotic chromosomes? a. Presence or absence of introns. b. Loop or linear chromosomes. c. Genetic recombination occurrence in RNA. d. Mutations occur in the DNA.
Last Answer : d. Mutations occur in the DNA.
Description : In a eukaryotic microbe, those sections of a primary RNA transcript that will NOT be translated are called a. Introns. b. Anticodons. c. ―Jumping Genes.‖ d. Exons.
Last Answer : a. Introns.
Description : Is the promoter region transcribed? -Biology
Description : Sequence of AAT GCT TAG GCA on template segment of DNA will be represented over the transcribed mRNA as
Last Answer : Sequence of AAT GCT TAG GCA on template segment of DNA will be represented over the transcribed mRNA as A. ... C. UUA CGA AUC CGU D. TTA CGA ATC CGT
Description : Which of the following is transcribed during repression? (A) Structural gene (B) Promoter gene (C) Regulator gene (D) Operator gene
Description : Anticodon sequence are seen in (A) tRNA and transcribed DNA strand (B) tRNA and complementary DNA strand (C) mRNA (D) mRNA and complementary DNA strand
Description : From DNA the genetic message is transcribed into this compound: (A) Protein (B) mRNA (C) tRNA (D) rRNA
Description : The gene which is transcribed during repression is (A) Structural (B) Regulator (C) Promoter (D) Operator
Description : Which of the following is transcribed correctly? A. The patient was given metronidazole for rosacea and Lamisil for onychomycosis. B. The patient was given metronidazole ... onychomycosis. D. The patient was given metroprolol for rosacea and Lamisil for onychomycosis.
Last Answer : Ans: A
Description : AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA? (a) AGGUAUCGCAU (b) UGGTUTCGCAT (c) ACCUAUGCGAU (d) UCCAUAGCGUA
Last Answer : (c) ACCUAUGCGAU
Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.
Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.
Description : 5. Lac operon transcribed when a) lactose is needed by the cell b) lactose is available to the cell c) lactic acid is needed by the cell d) lactic acid is available to the cell
Last Answer : b) lactose is available to the cell
Description : AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ? (1) AGGUAUCGCAU (2) UGGTUTCGCAT (3) ACCUAUGCGAU (4) UCCAUAGCGUA
Last Answer : (1) AGGUAUCGCAU
Description : Chromatin has two different regions, euchromatin and heterochromatin. One of these regions is highly condensed and considered an inactive region whereas the other is less condensed so it is more ... for transcription. Which of these regions would contain genes that are being transcribed often?
Last Answer : Euchromatin. Euchromatin is less condensly packaged allowing for easier access by transcription factors and polymerases. Heterochromatin is a region of condensed packaging and considered an inactive region.
Description : Erythromycin binds to 50 S ribosomal sub unit and (A) Inhibits binding of amino acyl tRNA (B) Inhibits Peptidyl transferase activity (C) Inhibits translocation (D) Causes premature chain termination
Description : Peptidyl transferase activity of 50 S ribosomal subunits is inhibited by (A) Rifampicin (B) Cycloheximide (C) Chloramphenicol (D) Erythromycin
Description : Tetracyclines inhibit binding of amino acyl tRNAs to (A) 30 S ribosomal subunits (B) 40 S ribosomal subunits (C) 50 S ribosomal subunits (D) 60 S ribosomal subunits
Description : Binding of formylmehtionyl tRNA to 30 S ribosomal subunit of prokaryotes is inhibited by (A) Streptomycin (B) Chloramphenicol (C) Erythromycin (D) Mitomycin
Description : Peptidyl transferase activity is present in (A) 40 S ribosomal subunit (B) 60 S ribosomal subunit (C) eEF-2 (D) Amino acyl tRNA
Description : eIF-1A and eIF-3 are required (A) For binding of amino acyl tRNA to 40 S ribosomal subunit (B) For binding of mRNA to 40 S ribosomal subunit (C) For binding of 60 S subunit to 40 S subunit (D) To prevent binding of 60 S subunit to 40 S subunit
Description : The first amino acyl tRNA approaches 40 S ribosomal subunit in association with (A) eIF-1A and GTP (B) eIF-2 and GTP (C) eIF-2C and GTP (D) eIF-3 and GTP
Description : In prokaryotes, the ribosomal subunits are (A) 30 S and 40 S (B) 40 S and 50 S (C) 30 S and 50 S (D) 40 S and 60 S