Biology question and answers for July 30, 2023
- Q Is lactose a reducing sugar? To answer this, first draw lactose,then label the anomeric carbons on each monomer and determine iflactose is a reducing/non-reducing sugar.b) Is Sucrose a reducing sugar?...
- Q 1. Which of the following factors would decrease the rate ofdiffusion? (Select all that apply)Check All That Applyincreased molecular weightincreased molecular weightdecreased molecular sizedecreased molecular sizelarger concentration gradientlarger concentration gradientdenser...
- Q Can I have eight to ten sentences (paragraph form) describing ofthe Vitis aestivalis (summer grape) of the Vitaceae plant family?Please include in these sentences, the flower, leaves, stems,fruit, general and...
- Q Explain the differences between Iso, Hypo, and Hypertonicconditions. If the solution is Hypertonic then the cell wouldbe?
- Q A person who went to the gym and after 2 hours for his training,discovered that he lost 2 kilograms.Why and how did you lose the 2 kilograms?What happened to your...
- Q What is hydrogenation? Why do food manufacturers utilize thisprocess and what are the potential health impacts ofhydrogenation?The quality of dietary protein differs among various sources,and provide an example of a...
- Q One thousand bases of quail mitochondrial DNA were downloadedto Geneious from the GenBank database. PCR primers were designed toamplify a conserved region from this sequence. Each primer was 20bases long,...
- Q Fermentation can enhance or alter nutritive andhealth-modulating properties of food constituents. T FJustify:The only mechanism microbes use to cause food spoilage isrelated to the growth of these microbes and their...
- Q 1a)With aid of diagram describe the central dogma ofmolecular biology in detail.2)Describe the general relationship between DNA,RNA and protein
- Q What is Erectile Dysfunction?
- Q 1. An occurrence of a gene made larger by trinucleotiderepeats is:Allelic expansionNucleotide expansionTranslocation mutationTransformation2. a chemical that can damage and/or change DNA iscalled a/an:AlleleEndonucleaseVectorMutagen3. An occurrence when a section of...
- Q What do you envision for the structure of estrogen receptorreceptor-bound estradiol?
- Q 1.     tRNA aminoacylationa.     What is aminoacylation? Whereon the tRNA does it occur?b.     Why is ATP required foraminoacylation? Why is the hydrolysis of PPi generated duringaminoacylation important?c.      What is the significanceof...
- Q The sequence of an estrogen-responsive element is givenbelow.What would you be the most likely consequence of theintroduction of this sequence of about 200 bases upstream (-200) ofthe gene transcirption initiation...
- Q 3.1 Discuss the similarities and differences betweenMHC's and HLA's. Describe the roles of the three MHC classes.3.2 Describe antigen processing .How does the processdiffer from endogenous and exogenous antiges? (...
- Q Explain ways in which systems biology can be used to predict thetoxicity of drugs?How can system biology approaches be used to identify howhost-microbial interactions cause disease?Please answer both questions
- Q compare dsDNA to ssDNA and dsRNA to ssRNA and DNA toRNA
- Q Jose and Jorge were identical twins separated at birth. Josegrew up in a large family in an impoverished slum in the middle ofa crime-ridden and polluted district of a major...
- Q Can Western blotting be used as a quantitative technique? Howcould we use Western analysis to determine the relative change in aprotein's expression levels between two treatments? What would weneed to...
- Q Describe the central role of glutamate synthetase in nitrogenmetabolism and the reason why its regulation should be socomplex?
- Q You have just diagnosed a patient with rheumatoid arthritis intheir hands, a chronic, inflammatory disorder that may affect manytissues and organs, but principally attacks the joints producinginflammation and often progresses...
- Q Artificial sweeteners, such as NutraSweet and Splenda, have nonutritional value in terms of calories, yet they taste sweet tohuman subjects.a) Explain how compounds with no nutritional value can beperceived as...
- Q 3) Proteins are made up of amino acids as the buildingblocks.a) The structural integrity of a protein is critical for itsfunctions. Using no more than 300 words, describe TWO (2)...
- Q Outline and explain the lytic and lysogenic cycles. please usecorrect terminology in describing the steps.
- Q Define each of the following terms and give an example.Simple (complete) dominance =Incomplete dominance =Codominance =Monohybrid cross =Dihybrid cross =Sex-linked trait =Simple Dominance with one gene:A certain moth species can...
- Q 1.(a) How are ecological communities structured? (b)State five reasons why biodiversity is important to anecosystem?
- Q Explain how the relative position of microbial communitieswithin sediment profiles is likely to change as a result ofseasonal inundation in wetland ecosystems.
- Q Write an short essay abouy How can enzymes speed up themetabolic reactionsOne A4 pageNo copy-paste from the internet(own sentences)
- Q What is the likely scenario that will happen if the OxygenTransfer Rate in the reactor is smaller than the Oxygen Uptake Rate(e.g. what will happen to your cells, doubling time...
- Q Describe two targets of antibiotics and discuss why the drugsare effective.
- Q How to extract only RNA from the solution in RNA prep?Which buffer is required to make it? Why DNA wouldn't be affectedby that buffer?
- Q Assume a cell with the following conditions.K+ Equilibrium Potential = -81 mVNa+ Equilibrium Potential = +58 mVThe plasma membrane of the cell is permeable only toK+The membrane potential is constant...
- Q Please write down 4 main types of defects found incancer cells, along with a brief explanation of what the long termresult of that defect is for the cell. Then conclude...
- Q In an organism with 52 chromosomes, how many bivalentswould be expected to form during meiosis?
- Q How might protein production by genetic engineeringbiotechnology be useful to you? Give a real or imaginedexample.
- Q Explain how an automatic pipette (like the one pictured) belowworks. Briefly explain how to use itHow can you accurately aliquot a highly viscous solution usingan automatic pipette?What does the term...
- Q Hemophilia is a disease caused by a recessive allele on the Xchromosome. Use a Punnett square to help describe the offspringphenotypes from the cross: heterozygous femalecrossed to male with hemophilia.
- Q Lactate concentration in the blood rises rapidly during hardrunning. After running, the blood concentration drops slowly.Describe why the lactate concentration increases and why itdecreases.
- Q Which one of the following is NOT characteristic of thehexose monophosphate pathway?It produces CO2It uses NADP+ as a cofactorIt produces ATPIt produces ribose-5-phosphateIt produces glyceraldehydes-3-phosphateA person with less than 10%...
- Q Catabolism of fatty acids stimulates gluconeogenesis inall of the following ways EXCEPT:By contributing to the production of NADHBy providing carbons for the glucose skeletonBy activating pyruvate carboxylaseBy contributing to the...
- Q please answer the following questions 1-3.1)Whycould corticosteroid use trigger invasive disease?2)What is the difference between acute and chronic when it come todisease in general? What is another example of a...
- Q Choose 2 (TWO) of the following PAIRS of terms relatedto PLANTS to compare and contrast (this means that youneed to explain both shared features and distinguishing features inthe pair). You...
- Q Summarize the following topics briefly:Oceanic AlveolatesProtista classficiationStramenophiles and global warmingTraits that distinguish charophytes from land plantsTraits charophytes share with land plantsAdvantages of seeds over spores
- Q Roger is a 25 year old astronaut who is travelling to anotherplanet in a one-man spaceship. While in space, the capsule becomepartially depressurised.Using your knowledge of internal and external respiration(M2L4),...
- Q Meternal and child undernutrition contribute to deficits inchildren's development and health and productivity in adulthood.Discuss this statement.Back up the argument with evidence and health and economicdata.Address all part of the...
- Q 1.) Explain how combinatorial control makes it possible to havefar fewer transcription factors than the number of genes that aretranscriptionally regulated.2.) If a miRNA were 5 nucleotides long, what is...
- Q Severe dieting results in both the reduction of fatstores and the loss of muscle mass. From your understanding ofBiochemical pathways, explain how this observationoccur?
- Q 1)What is the principle of CRISPR technology and what is your opinionon the first human gene editing case (conducted by Dr. He Jiankui)in China? (written in two separated paragraphs, more...
- Q Q) Make a Contemporary Issues Report , must be 3 to 4 pagescontaininga. Introduction (definition of contemporary issues and selectedsubjects)d. Contemporary Issues List (at least 5 new subjects)e. Selected Subject...
- Q How Gluconeogenesis is regulated allosterically by and hormones?In your answer, show the importance of this pathway, location(s),enzymatic requirements and starter substrates to be used.
- Q Functional assays vs. protein density: what happens to each ifprotein is denatured
- Q You intend to use bacteria to produce ethanol for your spin-offbusiness in Palapye. The bacteria (strain: Ethanol Blue) you have,is a very poor ethanol producer and is very sensitive to...
- Q Which organelle would be high in quantity in thefollowing cell types:1. Pancreas cells: Smooth ER2. Heart muscle cells:3. Liver cells:4. Plant leaf cells:5. Macrophages (a type of white blood cell):
- Q Design an experiment that will determine whether oligomycin isan ETC inhibitor or an uncoupling agent.
- Q How many different ways can homologous recombination cause geneconversion?A) twoB) oneC) fourD) three
- Q There are a number of mitochondrial disorders that affectpeople with mutations related to enzymes for the Citric acid cycle,for example:â–ª Fumerase deficiencyâ–ª Mutations in SUCLA2â–ª Mutations in SUCLG1â–ª Alpha-ketoglutarate dehydrogenase...
- Q Evolutionary biology: Compare and contrast the Hamilton &Zuk hypothesis to the Immunocompetence Handicap hypothesis.
- Q What does SDS- PAGE do? Why is measuring molecular weightvaluable? How to pick PA gel density?
- Q Describe the following briefly:What detrimental and beneficial effects can bacteria have onhumans?Bacteria evolutionary adaptations to survive harsh environmentalconditions.Bacteria abilities to \"develop\" antibiotic resistance.Roles prokaryotes play in our biosphere.
- Q A newly identified bacterial strain needs melrose as a growthfactor. To synthesize melrose these bacteria use three enzymes thatare encoded by the genes melA, melB andmelC in the mel operon....
- Q Homework is to right an essay about *Blood pressure measurementmethodology* Minimum one page as a word document
- Q Q2 A mutant monkey was identified that showed resistance to aviral disease ‘Kansah’. The kan gene, responsible for the diseaseresistance, was identified and cloned. A molecular techniquerevealed the presence of...
- Q Easy Plant bio question4. What are 5 reasons scientists think Arabidopsis isamazing?
- Q DNA replication requires many enzymes to accomplish the processsuccessfully. This results in a replication process that is knownto be bi-directional, semi-conservative and semi-discontinuous. Youdiscover a new prokaryotic organism that lacks...
- Q Introduction1. What do these terms mean?a. Catalaseb. Oxidative stressc. Pathogend. Surfactante. Sigma S (RpoS, product of the rpoS gene)f. Azide2. What research question are the authors trying to answer?3. What...
- Q 1. The blob operon produces enzymes that convert compound A intocompound B. The operon is controlled by a regulatory gene S.Normally, the enzymes are synthesized only in the absence ofcompound...
- Q The following statements apply to concepts and materialdiscussed in Chapter 6; identify which statementis TRUE.Selected Answer:Answers:If a mother and son both have a homozygous dominant genotype,but only the mother suffers...
- Q 1- Natural selection (pick all that apply)Group of answer choicesis a random eventcan fashion perfect organismsconsistently creates non-adaptive traitsinteracts with chance and the environmentdoes not require genetic variation to generate...
- Q What would happen if you implanted a capsule that slowlyreleased high levels of estradiol in the AVPV of a female rat?
- Q Describe allosteric regulation of enzyme activity. How doesallosteric inhibition differ from other modes of regulation, andhow can these work in concert to finely regulate enzyme activity?Provide an example, describe in...
- Q For each of the scenarios below:a) state why evolution is occurringb) state whether mutation, natural selection, geneticdrift or gene flow appears to be the mechanism ofevolutionc) and describe why you...
- Q The frequency of the sickle cell allele is high in populationsat low elevations in East Africa, where mosquitos breed year-round,and lower in high elevation populations where mosquitos are muchless abundant....
- Q Write one-page essay discussing the following questions: allgene products are only proteins. We also learned that DNA (in theform of genes within the chromosomes) is controlling all thechemical changes, which...
- Q Virus is a typical endogenous antigen. First explainits pathway of antigen presentation, second how many mechanisms dowe have in immune response against virus infection?
- Q How do segment polarity genes differ in their mode of actionfrom the gap and pair-rule genes? Explain why and giveexamples.
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