cAMP level is directly affected by glucose that helps regulate the lac operonOkasaki Fragments are ss DNA chains 100-200 nucleotides long, primed by very short RNA primers in E. coli.Archaebacteria, do not contain histones that package their DNAs in structures similar to eukaryotic chromatin.DNA replication is very accurate since it will allow only 1 x 10-8 mistakes per base.In most bacteria, protein synthesis is initiated with a modified methionine residue (N-formylmethionine), whereas unmodified methionines initiate protein synthesis in eukaryotes.Write T if the statement is true and write F if the statement is false.

As per our guidelines we are instructed to answer only 3 subparts of a question. So for other…

cAMP level is directly affected by glucose that helps regulate the lac operon Okasaki Fragments are ss DNA chains 100-200 nucleotides long, primed by very short RNA primers in E. coli. Archaebacteria, do not contain histones that package their DNAs in structures similar to eukaryotic chromatin.

cAMP level is directly affected by glucose that helps regulate the lac operon Okasaki Fragments are ss DNA chains 100-200 nucleotides long, primed by very short RNA primers in E. coli. Archaebacteria, do not contain histones that package their DNAs in structures similar to eukaryotic chromatin.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter15: Genes And Proteins

Section: Chapter Questions

Problem 3VCQ: Figure 15.16 Many antibiotics inhibit bacterial protein synthesis. For example, tetracycline blocks...

See similar textbooks

Similar questions

Ultraviolet light can cause covalent linkages between consecutive pyrimidine bases in DNA (up to 100 per second in a single cell in sunlight!). These bulky lesions (i.e. cyclobutane pyrimidine dimers and 6-4 photoproducts), which inhibit DNA and RNA polymerases, are mostly reversed by CPD photolyase when light >300 nm is available to power the reaction. In the dark, however, which DNA repair system is best able to correct these errors? a) non-homologous end-joining b) mismatch repairc) nucleotide-excision repaird) base-excision repair e) homology-directed repair
The beginning of the hexose kinase gene's sequence can be found below, the +1 nucleotide is underlined and bolded. It also contains an origin of replication (ORI) which is found at position 30. 20 ORI 40 60 5'..TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGTAATATGGGGATGCACTATC...3' 3'...AAGCTCGAGAGCAGCAGCTСТАТGCGCTАСТАТААTGACСАТТАТАССССТАСGTGATAG...5" promoter a. Assume that replication has been initiated at that ORI. Provide the sequence of the primer that is complementary to the DNA in each of the following positions. Site A - binding to the top strand of the DNA at position 20 – 30 5' 3' Site B - binding to the top strand of the DNA at position 31 – 41 5' 3'
The beginning of the hexose kinase gene's sequence can be found below, the +1 nucleotide is underlined and bolded. It also contains an origin of replication (ORI) which is found at position 30. 1 20 ORI 40 60 5'..TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGTAATATGGGGATGCACTATC...3’ 3'...AAGCTCGAGAGCAGCAGCTСТАТGCGCTАСТАТААTGACCATTATАССССТАСGTGATAG...5' promoter 2a. Assume that replication has been initiated at that ORI. Provide the sequence of the primer that is complementary to the DNA in each of the following positions. Site A - binding to the top strand of the DNA at position 20 – 30 5' 3' Site B - binding to the top strand of the DNA at position 31 – 41 5' 3' 2b. Replication is occurring normally in these cells; would you expect to find a primer in both positions? Why or why not?
Molecules of DNA Polymerase III per Cell vs. Growth Rate It is estimated that there are 40 molecules of DNA polymerase III per E. coli cell, is it likely that the growth rate of E. coli is limited by DNA polymerase III availability?
Figure 15.16 Many antibiotics inhibit bacterial protein synthesis. For example, tetracycline blocks the A site on the bacterial ribosome, and chloramphenicol blocks peptidyl transfer. What specific effect would you expect each of these antibiotics to have on protein synthesis? Tetracycline would directly affect: tRNA binding to the ribosome ribosome assembly growth of the protein chain Chloramphenicol would directly affect tRNA binding to the ribosome ribosome assembly growth of the protein chain
Choose reactions that always require hydrolysis of ATP. Select all that apply. sliding along template strands unwinding of DNA strands by helicase formation of the phosphodiester linkage by DNA ligase unwinding of DNA strands by B2 subunits formation of the phosphodiester linkage by DNA polymerase I
How many different single-nucleotide substitutions* (changing one nucleotide to another) in the DNA sequence shown below can result in non-sense mutations (a stop codon replaces an amino acid codon) in the second generation in a bacterial strain that is defective in DNA repair? Amino Acids Gln Trp Thr Arg Coding strand: 5'-CAA TGG ACT CGA-3' For your information, Stop codons: TAA, TAG, TGA *Ignore Insertions, and Deletions for this question None of these options 16 4 1 2 O O
Where do you predict the N- and C-termini are located for Max? Match the words in the left column to the appropriate blanks in the sentences on the right. electrostatic dispersion negative C-terminus positive positively negatively N-terminus The Reset Help is interacting with the DNA. The first reason for this is because the a-amino group is positively charged and will interact favorably with the of the charge on the phosphodiester backbone of the DNA. The second reason is that this orientation also situates the partial end of the helical macrodipole for favorable interactions with the charged phosphodiester backbone of the DNA
Describe the d=features of the following DNA-binding domains and how they interact with DNA. Helix-turn-Helix Zinc Finger Leucine Zipper Helix-loop-Helix
Mammalian cells growing in culture were labeled with [3H]-thymidineto estimate the rate of DNA synthesis. The thymidine administered had aspecific activity of 3000 cpm/pmol. At intervals, samples of culture weretaken and acidified to precipitate nucleic acids. The rate of incorporation ofisotope into DNA was 1500 cpm/106 cells /min. A portion of culture wastaken to determine the specific activity of the intracellular dTTP pool, whichwas found to be 600 cpm/pmol.(a) What fraction of the intracellular dTTP is synthesized from the exogenous precursor?(b) What is the rate of DNA synthesis, in molecules per minute per cell ofthymine nucleotides incorporated into DNA?(c) How could you determine the specific activity of the dTTP pool?
Introduction: The enzyme deoxyribonuclease I (DNase I) is an endonuclease that hydrolyzes the phosphodiester bonds of the double-stranded DNA backbone to yield small oligonucleotide fragments. DNase I is used therapeutically to treat patients with cystic fibrosis (CF). The DNase I enzyme is inhaled into the lungs where it then acts upon the DNA contained in the viscous sputum secreted by the lungs in these patients. Hydrolysis of high molecular weight DNA to low molecular weight DNA in the sputum decreases its viscosity and improves lung function. Animal studies have shown that DNase I is also effective in treating the autoimmune disease systemic lupus erythematosus (SLE). In this disease, the DNA secreted into the serum provokes an immune response. DNase I prevents the immune response by degrading the DNA to smaller fragments that are not recognized by the immune system. Genentech, Inc., the company that produces the recombinant DNase I, was interested in improving the efficiency of…
Introduction: The enzyme deoxyribonuclease I (DNase I) is an endonuclease that hydrolyzes the phosphodiester bonds of the double-stranded DNA backbone to yield small oligonucleotide fragments. DNase I is used therapeutically to treat patients with cystic fibrosis (CF). The DNase I enzyme is inhaled into the lungs where it then acts upon the DNA contained in the viscous sputum secreted by the lungs in these patients. Hydrolysis of high molecular weight DNA to low molecular weight DNA in the sputum decreases its viscosity and improves lung function. Animal studies have shown that DNase I is also effective in treating the autoimmune disease systemic lupus erythematosus (SLE). In this disease, the DNA secreted into the serum provokes an immune response. DNase I prevents the immune response by degrading the DNA to smaller fragments that are not recognized by the immune system. Genentech, Inc., the company that produces the recombinant DNase I, was interested in improving the efficiency of…