3 which of the following supramacromolecular complexes makes...

Name: 3 which of the following supramacromolecular complexes makes polypeptides a replisome b transcriptosome c ribosome d spliceosome e endosome 44669
Uploaded: 2023-08-02T12:02:46-08:00
Duration: 2 min 21 s
Channel: Madhur L
Description: 3 which of the following supramacromolecular complexes makes polypeptides a replisome b transcriptosome c ribosome d spliceosome e endosome 44669

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1.1 What is the best description of a Ribosome? a. An enzyme that uses ribose to synthesize amino acids b. A protein/RNA complex that synthesizes protein c. A ribozyme that uses RNA as an enzyme to directly ligate free amino acids to tRNAs d. A multi-subunit protein complex that charges tRNA with amino acids 1.2 In RNA processing? A. Exons are added to the ends of mRNA for protection B. Intron sequences are removed before the mRNA is translated C. The RNA transcript that leaves the nucleus may be much longer than the original primary transcript D. All RNA transcripts will be processed and leave the nucleus.

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30. The function of polyribosome is: A) polymerizes ribosome synthesis B) transport of ribosome C) increase the efficiency of protein synthesis. D) to associate mRNA, rRNA, and protein E) to remove introns. 31. The function of the ribosome in polypeptide synthesis is to A) hold mRNA and tRNAs together. B) catalyze the addition of amino acids from tRNAs to the growing polypeptide chain. C) move along the mRNA and eject tRNAs during the translocation process. D) A and B only E) A, B, and C 32. During translation, chain elongation continues until what happens? A) No further amino acids are needed by the cell. B) All tRNAs are empty. C) The polypeptide is long enough. D) A stop codon is encountered. E) The ribosomes run off the end of mRNA. 33. Eukaryotic mRNA processing (capping, splicing, and polyA tailing) takes place in the: A) ribosome. B) mitochondria. C) endoplasmic reticulum. D) nucleus. E) nucleus and endoplasmic reticulum. 34. Tetracyclin inhibits protein synthesis by A) blocks binding of aminoacyl-tRNA to A-site of ribosome. B) blocks initiation of RNA chains. C) blocks translocation. D) prevents peptidyl transferase reaction on ribosome. E) prevents binding of mRNA to ribosome 35. A particular eukaryotic protein is 600 amino acids long. Which of the following could be the maximum number of nucleotides in the DNA that codes for the amino acids in this protein? A) 3 B) 100 C) 300 D) 1,800

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RNA self-splicing demonstrates the role of RNA as a: a. nucleophile. b. intron. c. catalyst. d. exon. e. spliceosome. How is the expression of lactose permease induced by the addition of lactose to E. coli? a. The addition of lactose increases the concentration of cAMP that binds to CAP. The CAP-cAMP complex binds the operator site. Transcription of the lac operon is blocked. b. Lactose is partially metabolized to allolactose. This carbohydrate binds to the lac repressor and the allolactose-repressor complex binds the operator site. Transcription of the lac operon is blocked. c. The addition of lactose increases the concentration of cAMP that binds to CAP. The CAP-cAMP complex binds the repressor of the lac operon. Transcription of the lac operon increases. d. Lactose binds to the lac repressor and the allolactose-repressor complex leaves the operator DNA. Transcription of the lac operon increases. e. Lactose is partially metabolized to allolactose. This carbohydrate binds to the lac repressor and the allolactose-repressor complex leaves the operator site. Transcription of the lac operon increases. What catalyzes the formation of the peptide bond in protein synthesis? a. EFG b. peptidyl transferase center c. aminoacyl-tRNA synthetase d. transformylase e. RRF Which of the following is TRUE regarding eukaryotic RNA processing? a. Splicing of the mRNA precursor is done in the nucleus, while modification of the ends is done in the cytoplasm. b. Functional individual rRNA cannot be produced without splicing. c. Transcription yields primary transcript, which can by itself yield a functional protein. d. Splicing of the mRNA precursor is done in the cytoplasm, while modification of the ends is done in the nucleus. e. An unprocessed mRNA precursor is translocated into the cytoplasm to be modified before the translation.

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Transcript

00:01 Hello students, in this video i will be answering two questions.

00:05 Beginning with the first question that is question number 1 .1.

00:09 Ribosomes are large molecular complexes made up of both proteins and rna molecules.

00:17 They play a central role in protein synthesis that is the process of translation.

00:22 They do it by reading the genetic information in mrna and linking amino acids together in a specific order to form a polypeptide chain.

00:33 Therefore, the correct answer for this question is option b which states a protein rna complex that synthesizes protein...

Question

3. Which of the following supramacromolecular complexes makes polypeptides? A. Replisome B. Transcriptosome C. Ribosome D. Spliceosome E. Endosome

Question

3. Which of the following supramacromolecular complexes makes polypeptides? A. Replisome B. Transcriptosome C. Ribosome D. Spliceosome E. Endosome

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