Which of the following most accurately describes the process involved in protein synthesis? Transcription factors activate promoter region -> transcription by mRNA -> translation by ribosomes Translation by ribosomes -> transcription factors activate promoter region -> transcription by mRNA Transcription by mRNA -> transcription factors activate promoter region -> translation by ribosomes Translation by ribosomes -> transcription by mRNA -> transcription factors activate promoter region

Which of the following most accurately describes the process involved in protein synthesis? Transcription factors activate promoter region -> transcription by mRNA -> translation by ribosomes Translation by ribosomes -> transcription factors activate promoter region -> transcription by mRNA Transcription by mRNA -> transcription factors activate promoter region -> translation by ribosomes Translation by ribosomes -> transcription by mRNA -> transcription factors activate promoter region

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter9: Gene Expression And Gene Regulation

Section: Chapter Questions

Problem 11QP: Briefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNA

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Which of the following describes the sequence of events that occur during protein synthesis? tRNA enters nucleus --> transcription begins --> MRNA moves to cytoplasm > protein synthesis begins splicing of introns --> transcription --> MRNA synthesis translation --> transcription --> splicing of primary MRNA transcript --> translocation of MRNA --> translation translation --> transcription --> MRNA synthesis transcription --> translation --> MRNA production
Which of the following statament is NOT TRUE about gene expression? Lüffen birini seçin: O a. Gene expression is the process by which DNA directs the synthesis of proteins O b. During gene expression, the information encoded in genes is used to make specific polypeptide chains or RNA molecules. O c. The expression of genes that code for proteins includes two stages: replication and translation O d. Translation is the synthesis of a polypeptide using the information in the MRNA.
Unlike in prokaryotic cells, transcription and translation in eukaryotic cells... Group of answer choices are separated: transcription occurs in the cytoplasm, and translation occurs in the nucleus. occur together in the cytosol. occur together in the nucleus. are separated, except for proteins that bind to the DNA and ribosomes, which are translated in the nucleus. are separated: transcription occurs in the nucleus, and translation occurs in the cytoplasm.
Genetic expression involves transcription and translation. Match the structure or molecule to the step site where amino acid combines with tRNA intron sequences are removed and exons are combined together makes RNA more stable in the cytoplasm region of DNA with sequences that combine with RNA polymerase transcribed strand that will go on to translation connects amino acid to polypeptide chain and leaves tRNA site where tRNA with amino acid enters the ribosome recognized by the protein synthesis machinery enzyme that connects RNA nucleotides to DNA template part of tRNA with nucleotides complementary to mRNA 1. peptide bond 2. 3. antisense strand 4. anticodon loop 5. RNA polymerase 5' cap 6. A site 8. 7. splicing 9. promoter region acceptor stem 10. poly-A tail
Hydrogen bonds are important in DNA replication and transcription. They are relatively weak chemical bonds. Why is this a desirable feature for DNA? Describe the effect (s) of changing (mutating) the promoter on the transcription of the DNA strand/gene the promoter controls. What happens to protein synthesis if a nonsense codon is inserted into the gene? Explain why a point mutation does not necessarily change the original amino acid sequence. (Explain silent mutations) Choose any pentapeptide composed of five different amino acids. List the amino acids. Present one messenger RNA codon for each amino acids and the sequence of nucleotides on the DNA that originally coded for your pentapeptide.
A gene normally contains an N' terminal ER signal sequence and an internal stop transfer sequence. The ER signal sequence is recognized and used during the protein trafficking process, as normal. After translation is completed a signal peptidase enzyme cleaves the N' ER signal sequence but the internal sequence is not cleaved. Which of the following figures best represents the orientation of the protein product after translation? N Extracellular Extracellular Extracellular Extracellular N Lumen Lumen Lumen Lumen N' D A C O A D
Choose all that apply regarding gene transcription in eukaryotes: Exons are removed from mRNA by the spliceosome. RNA polymerase II must completely finish an mRNA transcript before processing can begin. RNA polymerase I catalyzes the synthesis of the majority of ribosomal RNA. Histone acetylation is a method of controlling gene expression. Acetylation creates more positive charges on histones, leading to tighter binding of the proteins to DNA. Introns must be removed from the initial RNA transcript. The hormone 17beta-estradiol binds to a G-protein coupled receptor to control gene transcription. The 5' cap of mRNA requires the free triphosphate on the nucleotide at the 5' end. Multiple transcription factors are necessary to form the pre-initiation complex (PIC) of RNA Pol II.
During transcription, an mRNA molecule is formed: *( Choose True if the statement is correct abourt During transcription, an mRNA molecule is formed: * and False if otherwise ) that it is double-stranded inside the nucleus that is complementary to both strands of DNA that is identical to part of a single strand of DNA
| What is translational repression? Explain why do cells use translational regulation to respond to signal cues like heat shock in the environment ? NUCLEUS CYTOSOL RNA transport translation control protein activity control control RNA transcript mRNA 1 3 MRNA. inactive protein DNA. -protein. transcriptional control RNA nuclear pore processing control nuclear envelope
Which of the following DNA regulatory protein “motifs” consists of three a-helices, in a single polypeptide, acting independently of other polypeptides in the regulation of DNA? the leucine zipper the zinc finger the homeodomain all of the above none of the above Which of the following processes regulates the maturation of mRNA from hnRNA (in the control of gene expression in humans and other eukaryotes)? translation of polypeptides self-replication of DNA processing of RNA transcription of RNA self-replication of RNA
Which of the following best describes post-translational protein regulation? Regulation of the ability to respond to a specific inductive signal Regulation of which proteins are allowed to remain or function in a cell Regulation of which RNAS enter the cytoplasm Regulation of transcription of RNA from DNA Regulation of translation of RNA into proteins in the cytoplasm
Briefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNA