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1. Transfer of DNA from a donor to a recipient cell by a bacteriophage.Transfer of DNA from a donor to a recipient as naked DNA in solution.3. Feedback inhibition differs from repression because feedback inhibitiona. islessprecise.b. is slower acting.c. stops the action of preexisting enzymes. d. stops the synthesis of new enzymes.e. all of the above4. Bacteria can acquire antibiotic resistance by all of the following excepta. mutation.b. insertion of transposons. c. conjugation.d. snRNPs.e. transformation.5. Suppose you inoculate three flasks of minimal salts broth withE. coli. Flask A contains glucose. Flask B contains glucoseand lactose. Flask C contains lactose. After a few hours of incubation, you test the flasks for the presence of ?-galactosidase. Which flask(s) do you predict will have this enzyme?a.A d.AandB b. B e. BandC c. C6. Plasmids differ from transposons in that plasmids a. becomeinsertedintochromosomes.b. are self-replicated outside the chromosome.c. move from chromosome to chromosome.d. carry genes for antibiotic resistance.e. none of the aboveUse the following choices to answer questions 7 and 8.catabolite repression b. DNA polymerasec. inductiond. repression e. translationpage1image41008 page1image41168 page1image41328 page1image414887. Mechanism by which the presence of glucose inhibits the lac operon.8. The mechanism by which lactose controls the lac operon.9. Two offspring cells are most likely to inherit which one of thefollowing from the parent cell?a. a change in a nucleotide in mRNA b. a change in a nucleotide in tRNA c. a change in a nucleotide in rRNA d. a change in a nucleotide in DNA e. a change in a protein10. Which of the following is not a method of horizontal gene transfer? a. binaryfissionb. conjugationc. integration of a transposond. transductione. transformationRestriction enzymes were first discovered with the observation thata. DNA is restricted to the nucleus.b. phage DNA is destroyed in a host cell.c. foreign DNA is kept out of a cell.d. foreign DNA is restricted to the cytoplasm. e. all of the aboveThe DNA probe, 3? -GGCTTA, will hybridize with which of the following?a. 5?-CCGUUA b. 5?-CCGAAT c. 5? -GGCTTA d. 3?-CCGAAT e. 3? -GGCAAUThe following enzymes are used to make cDNA. What is the second enzyme used to make cDNA?a. reverse transcriptase c. RNA polymeraseb. ribozyme d. DNA polymeraseIf you put a gene in a virus, the next step in genetic modification would bea. insertion of a plasmid.b. transformation.c. transduction.You have a small gene that you want replicated by PCR. You add radioactively labeled nucleotides to the PCR thermal cycler. After three replication cycles, what percentage of the DNA single strands are radioactively labeled?a. 0% d. 87.5%b. 12.5% e. 100%c. 50%Match the following choices to the statements in questions 7-10antisense, southern blot, vector, clone, library
Pieces of human DNA stored in yeast cells.A population of cells carrying a desired plasmid.Self-replicating DNA for transmitting a gene from one organismto another.A gene that hybridizes with mRNA.
3. which of the following is the fourth basic step to genetically modify a cell?a. transformation b. ligation c. plasmid clevage d. restriction-enzyme digestion of gene e. isolation of gene
Assuming that genotype essential to produce flat tails is homozygous recessive (such as bb) compute the frequency of the b allele in the squirrel population to two decimal places.
A study was done for young adults to look at the link between taking a drivers education class and the risk of being in an automobie accident.
Within the given DNA sequence, which strand of nucleotides would produce the amino acid chain shown below? (which strand functioned as the template?
Suppose you are interested in studying dogs as a system for obesity. You crossed a Cocker Spaniel to a Labrador Retriever and interbred the offspring for many generations.
Explain the main types of extracellular signaling.
Determine which of the following is not a function of membrane proteins? Selective permeability of the membrane is primarily determined by membrane phospholipids.
Suppose your cousin has decided to begin breeding owls. She does some research and finds out that a single gene controls feather color.
A chemical reaction in which polymers are synthesized from their building blocks is called.
The mutated form of hemoglobin in sickle-cell anemia results from the replacement of a glutamate residue by a valine residue at position 6 in the chain of the protein.
Assume you wish to make an agarose gel to run a DNA digestion that you have prepared, but you do not have the reagents required to make it.
In 2010, under its WaterSense program, EPA began promoting showerheads that produce still-lower flows of two gallon every minute.
Also glucose technically doesn't have a carbonyl functional group then because it is broken when the ring structure is formed? Is it a random chance that either alpha or beta glucose is formed.
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