Unless otherwise directed circle the one best answer. Biology questions and answers.
Overview Gene Regulation In Bacteria Article Khan Academy
Which of the following best describes the biological role of the lac operon.
. Which of the following best describes differences between eukaryotic and prokaryotic gene regulation. Can reduce long-term health problems among consumers of GMO B. In terms of the promoter operator activator repressor and effector signal molecule describe negative and positive gene regulation in prokaryotes.
Increases regulation of sale and consumption of healthy food C. The beta-galactosidase is a catabolic enzyme that breaks down lactose into two simple sugar molecules in bacterial cells. A CAP is inactive lac repressor is active lowest level of transcription B CAP is inactive lac repressor is inactive low level of transcription C CAP is active lac repressor is active low level of transcription.
The regulation of gene expression conserves energy and space. Which of the following best describes gene regulation. Which of the following best describes the what happens during gene expression.
Activator proteins bind near promoters and increase efficiency of translation. Best describes what happens during gene expressionFAQwhich the following best describes what happens during gene expressionadminSend emailDecember 13 2021 minutes read You are watching which the following best describes what happens during gene expression. Which of the following best describes the role of the enzymes of the lac operon on gene regulation.
Reduce the translation of specific proteins. A cell reads the instructions in dna and builds a protein based on those instructions. Add answer 5 pts.
Based on the information in the table which of the following best describes the mutation in the PhyB gene. A protein that binds to DNA and blocks activation of a small number of genes is aan. Gene Expression and Regulation Multiple choice.
Which of the following best describes an advantage of genetic engineering. A gene is copied many times so that all of a cell s daughter cells will have their own copy. Gene regulation is a way to control which genes are mutated and how to.
Gene regulation is a way for organisms to change which stretches of DNA undergo replication and at what rate. A single base-pair substitution in the second codon of the PhyB gene Which of the following AVPR2 gene mutations would most likely affect a persons ability to properly maintain water homeostasis. It is a portion of DNA attached to the end of chromosomes which does not contain genes.
Which of the following best describes the regulation of the lac operon under high glucose and low lactose conditions. The idea that gene regulation involves multiple factors is called. Which of the following statements best describes the promoter of a protein-coding gene.
-prokaryotic promoter contains defined elements UP -35 and -10 elements that mediate proper expression. It would require a significant amount of energy for an organism to express every gene at all times so it is more energy efficient to turn on the genes only when they are required. When can gene regulation occur in eukaryotic cells.
Which of the following best describes gene regulation. Groups of eukaryotic genes are likely to be regulated together whereas each prokaryotic gene is usually related separately. It ensures that bacterial cells produce lactose only when no other food sources are available.
Reduces harmful impact on natural ecosystem in the future D. The permease is a catabolic enzyme that breaks down lactose into two simple sugar molecules in bacterial cells. The promoter is a nontranscribed region of a gene.
Which of the following statements best describes a telomere. BWhen an activated protein cannot bind to the DNA operator unless an inducer binds activated protein transcription is inhibited. Gene regulation is the ability for cells to turn off all genes resulting in cell death B.
When the inducer is absent the repressor protein binds the DNA operator to inhibit transcription. Which of the following statements is true about gene regulation in bacteria. The role of micro RNAs in regulation of gene expression is to.
Specificity factors will bind the -10 and -35 regions to promote proper transcriptional initiation. The nucleus of a cell builds cellular proteins based on the sequence of the. A protein that binds to DNA and activates transcription of some genes is aan.
It prevents other sugars from being metabolized until all available lactose has been used. Which of the following best describes how repressor and activator proteins regulate gene regulation in bacterial cells. Can produce crops having high level of nutrition.
Overview Eukaryotic Gene Regulation Article Khan Academy
Bacterial Genes Are Organized In Operons Learn Science At Scitable
Overview Eukaryotic Gene Regulation Article Khan Academy
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