Operons encoding catabolic enzymes are often _______, while those encoding anabolic enzymes are often ________

Q: Assuming that the level of glucose is low, a mutation in the repressor associated with the lac…

A: The lac operon stands for lactose operon. These are a set of genes that are found in E.coli and…

Q: As trytophan levels increase in the cell, _____ bind(s) to active aporepressors, causing ______ of…

A: trp operon:  The trp operon codes for the components required for tryptophan production. An operon…

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: synaptic knobs of a nueron have what function? a. they release neurotransmitter into the synaptic…

A: The nervous system is the specialized system that controls the sensory and motor activity in the…

Q: Retroviruses such as HIV, Herpesviruses, and Hepatitis B can be effectively inhibited by _____. Mark…

A: Nucleoside analogs such as acyclovir are antiviral drugs that can effectively inhibit the…

Q: Geneticists isolated six trains of E. coli (strains 1-6) whose lac operons had one of the following…

A: LAC operon of E. coli is an example of inducible gene expression system. Lactose acts as inducer…

Q: The regulatory gene that codes for the tryptophan repressor is not tightly linked to the trp operon.…

A: Bacteria such as E.coli need amino acids to survive and such as amino acid Tryptophan. If tryptophan…

Q: An operon a. is regulated by a repressor binding at the promoter. b. has structural genes that are…

A: When the RNA polymerase binds to the promoter, the operon is transcribed and some mRNAs are…

Q: Which of the following is NOT found in a prokaryotic genome?   A. tRNA genes   B. Operons   C.…

A: There are 2 types of living cells present on earth, prokaryotic cells and eukaryotic cells.…

Q: Geneticists isolated six trains of E. coli (strains 1-6) whose lac operons had one of the following…

A: Lac operon It is an operon that is needed for the movement and metabolism of lactose in E. coli.

Q: Exposing Escherichia coli (e.coli) to ionizing radiation results in DNA damage. Say you perform an…

A: Gene expression is the process by which information from a gene is used in the synthesis of a…

Q: . For each of the following growth conditions, whatproteins would be bound to lac operon DNA?…

A: An operon consists of many related genes that are regulated by a common operator. The multiple genes…

Q: Operons______ . a. only occur in bacteria b. include multiple genes c. involve selective gene…

A: The correct answer is (b) include multiple genes

Q: Prokaryotes regulate their processes primarily at the level of transcription. At what level (s) do…

A: Eukaryotic gene expression is a complex process that involves multiple steps and regulatory…

Q: In prokaryotes, the trp operon is under ________ that ________ prevents RNA polymerase from binding.…

A: Amino acids are required for bacteria like E. coli to sustain. E. coli can ingest tryptophan, which…

Q: A molecular biologist mutated a gene that encodes an enzyme (protein) that normally is secreted from…

A: Gene mutation  It is defined as the permanent alteration in the sequence of DNA that makes up the…

Q: Components necessary for regulating the /trp/ operon do NOT include

A: Answer - Option E - CAP protein

Q: The wound response products that bind to digestive enzymes in herbivores are a. proteinase…

A: The wound response is the metabolic activity that occurs when a plant's structure is disrupted by…

Q: In order for the lac operon to be triggered, lactose must be present and ________.   a. cAMP levels…

A:

Q: How does the lac operon regulate lactose digestion in bacteria?a. The repressor protein becomes a…

A: The lac operon of E. coli contains genes concerned with lactose metabolism. It's expressed only if…

Q: Proteins that influence RNA synthesis by binding directly to DNA are called_____ . a. promoters c.…

A: The conversion of the DNA into the mRNA is termed as the transcription and the conversion if this…

Q: In a bacterial operon, the active repressor bind to the   A. promoter.   B. terminator.   C.…

A: The operon concept can be defined as a DNA containing a set of genes that are transcribed basically…

Q: The lac operon controls lactose metabolism in bacteria. Predict the phenotype of a LacP mutation. •…

A: Gene regulation is defined as any type of changes occur in the genes resulting in various…

Q: Operons involved with the biosynthesis of molecules such as amino acids are most likely to be…

A: A repressible operon encodes for anabolic enzymes. The genes that encode these anabolic enzymes tend…

Q: The experimental growth of an eye on the leg of a fruit fly is most famous for providing direct…

A: A gene has been identified on the fruit flies called "eyeless gene".  It can be turned on different…

Q: The binding of _______ to lac repressor causes lac repressor to _______ to the operator site,…

A: Lac operon is a lactose-regulating operon which consists of promoter, operators, and structural…

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.