Biology question and answers for July 15, 2023
- Q explain what X inactivation is in Calico cats and how it couldaffect gene expression in a multicellular organism.
- Q We respect Dr. Trudeau and all those earlier scientists who didthe best they could within the contemporary understanding of theproblem they addressed and utilizing the materials and technologythey had at...
- Q serotype steps/procedure in detecting pseudomona aeriguinosa?
- Q Briefly summarize the central dogma and indicate where geneexpression can be controlled along the way.
- Q Explain what epigenetics is. Give examples of specific molecularmechanisms at play
- Q You have received funding to film a2-hour documentary on some topic within the field of marine biologyfor the Discovery Channel. First, describe what the main theme ofyour show will be....
- Q Describe the 3 different polymers that make the cytoskeleton andexplain their differences and similarities
- Q What would happen if:I plugged the leads for the DNA gel in the wrong way? I wasgoing too fast and I plugged the positive lead into the negativeand the negative...
- Q Discuss homeostasis, both negative and positive feedback andprovide examples:Describe the structural hierarchy of the human body.
- Q Compare and contrast the polymerization of actin and tubulin invitro and in vivo.
- Q Which is common feature shared between the GG-subunit of aG-protein complex and the c-ras protein?Select one:a. intrinsic GTPase activityb. membrane associated proteinc. signal transductiond. All of thesee. None of these.
- Q Explain the regulation of the trp operon by the 5' end of themRNA when tryptophan is low vs high.
- Q Transposons can rearrange genomic architecture or cause genomicexpansion. How?
- Q What is gene control and why is gene control important?
- Q Topic: VaccinationsDebates regarding vaccinating newborns and childrenhave been in the news in the past few years. Review the PDFschedule of required/suggested vaccinations from Doc Sharing andthe 2014 Measles outbreak as...
- Q Topic: GeriatricsHow do you complete a medical and history interviewwith a patient exhibiting signs of dementia or Alzheimer’s? Whatare some ways the medical assistant can demonstrate professionalismand sensitivity in communication?Â
- Q One of the central principles of Biology is the relationshipbetween structure and function. Discuss structure/functionrelationship in biological membranes. Describe what they are madeof, what are their functions and use examples...
- Q 20. How are rayfinned fishes different from fleshy finnedfishes? What were distal phalanges probably first used for?
- Q Describe how subunit cooperativity works in the binding ofO2 to hemoglobin in the lungs and the release ofO2 in the tissues. Include in your response the benefitof subunit cooperativity.
- Q explain why cellular signaling is crucial in biology. You willmake sure to mention what are the two basic signaling switches andwhat is the general flow of signaling in a cell
- Q Be able to determine the possible genotypes based on a person’sphenotype. (For example: Suppose a person expresses tongue-rolling,a dominant trait, in his phenotype. What are his/her possiblegenotypes?)
- Q Name and describe the three different classificationsof (CH2O)n
- Q 7)One goal of ecotoxicology is to preserve ecosystems and theirfunctions and services. What are the strengths of usingcommunity-level analyses to preserve ecosystems and/or to evaluatethe effects of pollutants or contaminants...
- Q Topic: ManifestationsDo physical ailments manifest differently in ageriatric patient verses other patient populations? Give an exampleand how the MA would demonstrate professionalism and sensitivity intheir communications.
- Q A fly was found that had two mutations, Q&Z.Reciprocal crosses between wild type flies and Q&Z mutants gaveall Q&Z mutant F1 progeny in all cases. These results suggestthat the Q&Z...
- Q Explain why a life cycle that includes meiosis must alsoinclude fertilization. What is the advantage of such a lifecycle?Why are prokaryotes especially useful in bioremediation?Describe some examples of how prokaryotes...
- Q Describe the fluid mosaic model of the plasma membrane. Discussthe role of the membrane in the movement of materials through it byeach of the following processes.Active transportPassive transportDescribe negative and...
- Q 1.What function of intermediate filaments is lacking in people withepidermolysis bullosa complex?A) what type of intermediate filaments are affected?2. What type of intermediate filament is affected inProgeria?3. What is the...
- Q Consider the following statement: “All present-day cellshave arisen by an uninterrupted series of cell divisions extendingback in time to the first cell division.†Is this strictly true?Why or Why not?
- Q gene editinga. How does the enzyme used in CRISPR-Cas9 differ fromenzymes used in recombinant DNA technology?b.Can you predict a potential risk of somatic cell geneediting?
- Q Topic: Physical ExaminationsWhat are the benefits to performing a physicalexamination on patients? How can you explain those benefits topatients when they ask?  What is the difference between acomplete physical and a...
- Q 1. All are linked to the electron-transport chain throughComplex I accepting electrons from NADH EXCEPT:a. gluconeogenesisb. glycolysisc. citric acid cycle2. All are characteristics of the ATP synthase mechanismEXCEPT:a. one site...
- Q what was the purpose of transforming cells from URA3- minus toURA3+ plus?
- Q Looking at your results of the Ames test, you find that thereare many colonies growing on the agar in the presence of thechemical being tested. What is your interpretation of...
- Q Use the following scenario to answer question.Island chains are known to occur along the borders of theearth’s large land plates. For example, both the Hawaiian andGalapagos Islands were born from...
- Q These Gram-positive pleomorphic bacteria are toxinproducers that cause formation of a pseudomembrane in the throatthat can restrict airflow. This pathogen isA.Bordetella pertussisB.Streptococcus pyogenesC.Corynebacterium diphtheriaeD.Neisseria meningitidisE.Streptococcus pneumoniae
- Q Natural killer cells target:infected cells that have lost MHC I surface proteinsB.bacterial cells that are coated with complementC.infected cells bound with antibodyD.cancerous cellsE.Two of the above are correct
- Q Why would plants need to evolve vascular tissue, lignin, and thedifferent reproductive mechanisms (cone versus flower).
- Q 29)Regarding the neurotoxigenic disease caused by Clostridiumtetani, which of the following among A-D is notcorrect?A.Infection typically occurs via a puncture wound to the skin.B.It results in lack of muscle contraction,...
- Q 31)Which of the following would not be aconsequence of an antibody:antigen interaction?A.agglutination of antigensB.neutralization of toxinC.activation of complementD.opsonizationE.prevent adherence of pathogensF.All are possible consequences of antibody:antigeninteractions32)Which statement among A-D is...
- Q Biofilm formation by staphylococcus epidermidis
- Q 2. List the different types of electron carriers within theelectron transport system. For every pair of electrons each complextransfers, determine how many protons are translocated.
- Q Which statement among A-E is false concerning digestivesystem and gastrointestinal (GI) tract infections?A.Dysentery is a more severe form of gastroenteritisproducing abdominal cramps, fever, and blood.B.Rehydration and electrolyte replacement are typicallythe...
- Q Describe the reaction of gluconeogenesis and for each stepexplain the type of reaction, enzyme involved, substrate andproduct, if the reaction is reversible or irreversible, anycoenzyme or prosthetic group involved, and...
- Q Describe the reaction of the citric acid cycle and for each stepexplain the type of reaction, enzyme involved, substrate andproduct, if the reaction is reversible or irreversible, anycoenzyme or prosthetic...
- Q Explain how a white blood cell (leukocyte) uses protein-sugarinteractions within a blood vessel to find the site ofinflammation. Specify which proteins are involved in binding towhich types of sugars during...
- Q In animal tissue, the rate of conversion of pyruvate ofacetyl-CoA is regulated by the ratio of active, phosphorylatedpyruvate dehydrogenase to inactive, unphosphorylated pyruvatedehydrogenase (PDG) complex. Explain the impact of the...
- Q Describe the similarities and differences in chemiosmosisbetween oxidative phosphorylation in mitochondria andphotophosphorylation in chloroplasts.
- Q Genomic differences in purebred cocker spaniel vs. purebredgreyhound?Between wolf vs. purebred cocker spaniel and purebredgreyhound?
- Q Explain the relationship between the measurement of2-deoxyadenosine and how this is being used to determine the amountof DNA in the experiment that uses diphenylamine reaction
- Q Part A: Punnett SquaresI. Monohybrid Crosses1. In pea plants yellow peas (A) are dominant to green peas (a).Show a cross between two heterozygous yellow pea plants (Aa xAa).AaAaWhat is the...
- Q Describe how catalysts work and give an example of one. What isthe Kd for a catalyst and how would you interpret a low Kd. How donon-specific DNA binding proteins work?...
- Q 1) A total of 6147 North American Caucasians were blood typedfor the MN locus, which is determined by two codominant alleles,LM and LN. The following data wereobtained:Bloodtype                    Number      M                              1654    MN                             3215      N                              1278Carry out a chi-square...
- Q Complete the following sentence: \"A competitive inhibitorcompetes with substrate binding to the _________ site, generally byalso binding to this site; its effect on reaction rate becomesneglectable when the concentration of...
- Q Cystic fibrosis (CF) is caused by a genetic mutation resultingin defective proteins in secretory cells, mainly in the epitheliallining of the respiratory tract. The one in every 2,000 Caucasianbabies who...
- Q Design an experiment to determine the changes in thetranscriptome (global gene expression) of human cells in responseto infection with the influenza virus. The experiment must beexplained in detailed and have...
- Q Part 7Which of the following happens during meiosisII?A. homologs separateB. sister chromatids separateC. homologs cross overD. sister chromatids formWhich of these is a unique feature in sexualreproduction?A. mitosisB. cell divisionC....
- Q Part 7What is a difference in the formation of leading strandand lagging strand?A. leading strand is formed continuously, lagging strandis formed in fragmentsB. leading strand elongates at 3’ end, lagging...
- Q Part 7In a ____________ cell, every maternal homolog has amatching paternal homolog.A. spermB. haploidC. diploidD. bacterialE. eggAt the G1 phase of cell cycle, body cells of goats have60 chromosomes. How...
- Q The data below is from a series of two-point crosses.Use the recombination frequencies to construct a genetic map of allthree genes.cv – ct 34%cv – vg 50%vg – ct 30%a)...
- Q If a chemical was to block the transport of electrons fromferredoxin to NADP+ reductase how would that affect the process ofphotosynthesis (i.e. what would still be produced, what wouldn’t beproduced,...
- Q 1. What are the microorganisms responsible for Cholera andPertussis?a) Where are each of these microorganisms active in the humanbody?b) What are the signs and symptoms of each disease?c) Compare G...
- Q Part 8Choose all that apply. The ability to performdifferential gene expression is essential to cells because; (hint:three correct choices)A. all cells can do same functionsB. cells can express genes only...
- Q \"Humans acquire Staphylococcus saprophyticus from directexposure to animals or inadequately cooked animal food products.Young women are more susceptible to genitourinary colonization thanare others, and some people develop infection in association...
- Q forcellular respiration lab we had germinated peas and then we hadgerminated peas that we boiled for five minutes. when you boil thepeas do they become non-germinated? is CO2 produced in...
- Q Part 8What happens on the promoter of a gene?A. ribosomes bind to initiate translationB. transcription complex forms to starttranscriptionC. activators bind to increasetranscriptionD. DNA polymerase binds to startreplicationTranslation begins before...
- Q The following is a type of the drug currently being tested tosee if it is effective in the treatment of COVID-19.  Anti-inflammatories/ immunosuppressives – ex. Actemraexplain how anti-inflammatories and immunosuppresives are...
- Q In a community, the dominant species is.....1) the species that crates many niches.2) the species with the highest total biomass in thecommunity.3) the most efficient competitor.4) the most reproductively successful...
- Q 1. Fill in the following equation: ATP + __ ? ADP + __Select one:a. H2O, Pib. H2O + free energy, Pic. free energy, Pi + H2Od. H2O, Pi + free...
- Q 1) Describe in detail how the liver regulates bothglycolysis and gluconeogenesis?2) Please explain how the same enzymes within glycolysisand gluconeogenesis are used for both pathways?
- Q Given the viral life cycle pictured, identify 3 stages of thecycle which you might target with a therapeutic molecule in orderto both (i) prevent or inhibit spread of the virus,...
- Q Hypothesis 1: Mercury in thimerosal caused neurological damagein children, and is at least partly responsible forthe increase in autism diagnoses.Hypothesis 2: Te rate of autism incidence is not increasing,only the...
- Q In the MIC assay, why did it matter what the E. colidensity is? (Why was a diluted culture used to inoculate thebroths?)The MIC assay measures inhibition, not killing. If you...
- Q Suppose that goats have one gene that codes for color, where A isbrown and a is white. The goats also have another gene that codesfor height, where B is tall...
- Q Choose correct answers: Which of the following are true ofnuclear receptors?Question 7 options:Ainitially in cytoplasm and transition to nucleusBare often bound by steroid hormonesCare often bound by peptide signals like...
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