The development of global regulatory systems in prokaryotes
A- determines the exact location of the cell on the globe
B- aids in DNA replication
C- .determines the exact location of the replication site
D- regulates many genes under varying environmental conditions

1 Answer

Answer :

regulates many genes under varying environmental conditions

Related questions

Description : During DNA replication in prokaryotes, synthesis begins on the circular chromosome A.always at the same place B.at any stretch of DNA that is high in AT pairs C.randomly on the chromosome D.at the promoter

Last Answer : A.always at the same place

Description : Which one of the following is NOT part of an operon? a. Regulatory gene b. Operator c. Promoter d. Structural genes

Last Answer : d. Structural genes

Description : The sulfonamides interfere with bacterial metabolism by a. blocking cell wall synthesis. b. disrupting folic acid metabolism. c. reacting with bacterial cell membranes. d. inhibiting DNA replication.

Last Answer : b. disrupting folic acid metabolism.

Description : Which one of the following is NOT an event of sporulation? a. Symmetrical cell divisions b. Mother cell disintegration c. DNA replication d. Prespore engulfment by the mother cell

Last Answer : a. Symmetrical cell divisions

Description : What is evidence for the endosymbiotic theory? a. Ribosomes are the same size in eukaryotes and prokaryotes b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes c. Flagella are the same in both types of cells d. A-C are correct

Last Answer : b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes

Description : What is the action of tetracycline in prokaryotes? A- It blocks translocation reaction on ribosomes B- It blocks peptidyltransferase reaction on ribosomes C- It blocks the binding of amino-acyl tRNA to the A site of ribosomes D- Not known with certainity

Last Answer : It blocks the binding of amino-acyl tRNA to the A site of ribosomes

Description : What is the action of tetracycline in prokaryotes? A- It blocks translocation reaction on ribosomes B- It blocks peptidyltransferase reaction on ribosomes C- It blocks the binding of amino-acyl tRNA to the A site of ribosomes D- Not known with certainity

Last Answer : It blocks the binding of amino-acyl tRNA to the A site of ribosomes

Description : Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote) Reason : Both bacteria and

Last Answer : Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or ... . If both assertion and reason are false

Description : The eukaryotic genome differs from the prokaryotic genome because (a) the DNA is complexed with histone in prokaryotes (b) the DNA is circular and single stranded in prokaryotes (c) repetitive sequences are present in eukaryotes (d) genes in the former case are organised into operons.

Last Answer : (b) the DNA is circular and single stranded in prokaryotes

Description : In location planning, environmental regulations, cost a , cost and availability of utilities, and taxes are a. global factors b. country factors country factors c. regional/community factors d. site-related factors e. none of the above

Last Answer : c. regional/community factors

Description : Besides structural genes that encode proteins, DNA contains some regulatory sequences which are known as (A) Operons (B) Cistrons (C) Cis-acting elements (D) Trans-acting factors

Last Answer : Answer : C

Description : Which of the following is used for determining the location of specific genes within the genome? A-Genomics B- Annotation C-Cloning D-Proteomics

Last Answer : Annotation

Description : Tetracyclines interfere with a. Translation. b. Transcription. c. Dna Replication. d. Membrane Function.

Last Answer : a. Translation.

Description : New approaches to antibiotic therapy include a. Carbohydrate targets in the wall LPS. b. unregulating DNA replication. c. Discovering new and unique antibiotics. d. All of the above (A—C) are correct.

Last Answer : d. All of the above (A—C) are correct.

Description : In the semiconservative method of replication a. Both parent strands are degraded. b. One parent strand is conserved in each of the the new dna. c. Both parent strands reform with one another. d. Okazaki fragments form both of the new molecules of DNA.

Last Answer : b. One parent strand is conserved in each of the the new dna.

Description : The Ames test is an effective procedure for a. Identifying disease-causing bacterial species. b. Detecting potential human carcinogens. c. Determining if DNA replication has occurred. d. Detecting antibiotic resistance.

Last Answer : b. Detecting potential human carcinogens.

Description : Why is DNA replication considered semiconservative? a. none of the materials are wasted b. it is a very efficient process c. half of the new DNA molecule is half of the original molecule d. none of the above are correct

Last Answer : c. half of the new DNA molecule is half of the original molecule

Description : Excision repair would correct DNA damage caused by a. Antibiotics. b. UV Light. c. A Chemical Mutagen. d. A Dna Replication Error.

Last Answer : b. UV Light.

Description : Spontaneous mutations could arise from a. DNA replication errors. b. Atmospheric Radiation. c. Addition Of Insertion Sequences. d. All the above (A—C) are correct.

Last Answer : d. All the above (A—C) are correct.

Description : If an antibiotic binds to a 50S subunit, what cellular process will be inhibited? a. DNA replication b. Intron excision c. Translation d. Transcription

Last Answer : c. Translation

Description : At a chromosome replication fork, the lagging strand consists of__ That is joined by___. a. RNA sequences; DNA ligase b. Okazaki Fragments; RNA Polymerase c. RNA sequences; ribosomes d. Okazaki fragments; DNA ligase

Last Answer : d. Okazaki fragments; DNA ligase

Description : The enzyme adds complementary bases to the DNA template strand during replication. a. Ligase b. Helicase c. DNA polymerase III d. RNA polymerase

Last Answer : d. RNA polymerase

Description : Eukaryotic cell organelles first emerged A.from a specialized lineage of cells within the kingdom Protista B.when prokaryotes engulfed each other and became interdependent C.when bacteria made their first attempts at reproduction D.just before the origin of the animal and fungal kingdoms

Last Answer : B.when prokaryotes engulfed each other and became interdependent

Description : Mycoplasmas are different from the other prokaryotes by A- presence of chitin in cell walls B- presence of murrain in cell walls C- presence of proteins in cell wallsD- bsence of cell wall itself

Last Answer : bsence of cell wall itself

Description : The transposase gene encodes an enzyme that facilitate A- viral replication within a genome B- general recombination C- site-specific integration of transposable elements D- none of the above

Last Answer : site-specific integration of transposable elements

Description : What is the term used for a segment of DNA with one or more genes in the centre and the twoends carrying inverte d repeat sequences of nucleotides? A- Plasmid B- Transposon C- Insertion sequence D- None of these

Last Answer : Transposon

Description : A microarray differs from a gene fusion in that, it A- carries DNA segments from many different genes B- is not constructed by cloning C- gives direct measurement of mRNA level D- all of the above

Last Answer : all of the above

Description : The main difference between a self-transmissible and a mobilizableplasmidis that the selftransmissible plasmid A- transfers both strands of the plasmid DNA B- carries genes encoding the mating apparatus C- transfers antibiotic resistance genes D- usually has a transposon inserted into it

Last Answer : carries genes encoding the mating apparatus

Description : Why Deinococcusradiodurans is able to survive massive exposure to radiation? A- .Because it produces a thick shell which acts as a shield from the radiation B- Because it has unique DNA repair ... its cellwall contains radioactive elements D- Because it has many copies of genes encoding DNA repair

Last Answer : Because it has many copies of genes encoding DNA repair

Description : _______ was first used to catalog organisms into one of three domains. a. Photosynthesis b. Ribosomal RNA genes c. Nuclear DNA genes d. Mitochondrial DNA genes

Last Answer : b. Ribosomal RNA genes

Description : Both DNA and RNA are composed of _______ a. polynucleotides b. genes c. polysaccharides d. polypeptides

Last Answer : a. polynucleotides

Description : Multiple checkpoints in the eukaryotic cell cycle ensure that division occurs only after sufficient growth and faithful DNA replication, and only when favorable conditions exist. Of the many proteins involved in ... CDKs) are among the most important. How do CDKs function to control the cell cycle?

Last Answer : CDKs phosphorylate various protein substrates that are required for cell cycle progression. Some of the important substrate proteins that CDKs phosphorylate include condensin proteins, which are essential ... which form a stabilizing network under the nuclear membrane that assembles during mitosis.

Description : Origin of replication in prokaryotes -Biology

Last Answer : answer:

Description : What is a difference between prokaryotic and eukaryotic cells in making protein? a. Eukayotes have introns that stay inside the nucleus b. Prokaryotes can transcribe and translate at the same time c. the process is faster in prokaryotes d. A-C are correct

Last Answer : d. A-C are correct

Description : Entner-Doudoroff pathway is found in A-aerobic prokaryotes B- anaerobic prokaryotes C- both (a) and (b) D-aerobic eukaryotes

Last Answer : both (a) and (b)

Description : The most significant reason why fungi are not in the kingdom Plantae is that fungiA- .are chemoorganotrophic heterotrophs B- have unicellular and multi-cellular forms C- are prokaryotes D- are eukaryotes

Last Answer : .are chemoorganotrophic heterotrophs

Description : Genetic system is located in the prokaryotes in A-.nucleoid B-.chromatin C-nuclear material D-all of these

Last Answer : all of these

Description : All of the following are features of prokaryotes except A- nitrogen fixation B- photosynthesis C- sexual reproductionD- .locomotion

Last Answer : sexual reproduction

Description : Prokaryotes that can withstand very high salt concentrations are called ___ a. Capnophiles b. Barophiles c. Halophiles d. Microaerophiles

Last Answer : c. Halophiles

Description : Barophiles are prokaryotes that withstand high _____. a. Oxygen concentrations. b. Nitrogen gas concentrations. c. Hydrostatic pressures. d. Salt concentrations.

Last Answer : c. Hydrostatic pressures.

Description : All of the following are found in prokaryotes and eukaryotes, except a. acell (plasma) membrane b. mitochondria c. cytoplasm d. ribosome

Last Answer : b. mitochondria

Description : Prokaryotes contain _ _ _ _ _ _ _ _ riobsomes A 80s B 65s C 70s D 75s

Last Answer : C 70s

Description : Mycology is Study of _ _ _ _ _ _ _ _ A Fungi B Virus C Prokaryotes D Parasites

Last Answer : A Fungi

Description : _____ T cells prevent autoreactive T cells from attacking self. a. Memory b. Helper c. Regulatory d. Effector

Last Answer : c. Regulatory

Description : Commercial scale production of amino acids is typically carried out using A- regulatory mutants to cause overproduction of biochemical intermediates B- creation of an intentional increase in membrane permeability to increase release of the amino acids C- both (a) and (b) D- none of the above

Last Answer : both (a) and (b)

Description : A quorum sensing system A- .detects a signal from the external environment B- B.senses a compound produced by the bacterium itself C- consists of a sensor component that phosphorylates a regulatory protein D- .controls the activity of ribosomes directly

Last Answer : B.senses a compound produced by the bacterium itself

Description : A quorum sensing system A- .detects a signal from the external environment B- B.senses a compound produced by the bacterium itself C- consists of a sensor component that phosphorylates a regulatory protein D- .controls the activity of ribosomes directly

Last Answer : B.senses a compound produced by the bacterium itself

Description : The newest and safest vaccines under development are _____. a. attenuated vaccines b. toxoid vaccines c. DNA vaccines d. conjugated vaccines

Last Answer : c. DNA vaccines

Description : Atoms with varying mass numbers are called ________. a. Electrons b. Ions c. Isotopes d. Neutrons

Last Answer : c. Isotopes

Description : An HIV patient with swollen lymph nodes and CD4 T cell count of would be in stage of HIV disease/AIDS. a. 1,000; stage II b. 700; stage I c. 400; stage III d. 400; stage IV

Last Answer : a. 1,000; stage II