Biology question and answers for July 23, 2023
- Q Please answer the following parts with good explanation. Thankyou!1A.)Explain how PIP2 is a membrane bound signaling molecule thatcan be modified by both GPCR and RTK pathways for different cellsignaling pathways.1B.)...
- Q Discuss the neuropathology perspective on foraging behavior inhoneybees, foucusing on the research of ginger withers and her teamon the effect of mushroom bodies on foraging.
- Q An Iron Man competition takes over 8 hours to complete.The following are some of the changes that occur to the humanbody during exercise:i. increased body temperatureii. loss of H2O and...
- Q Describe how information is passed from the pre-synaptic topost-synaptic neuron in order to allow information flow throughoutthe nervous system.
- Q How does the human cardiovascular system respond when anindividual faces a fight-or-flight situation? (1 point)a)Blood pressure and heart rate decrease, and blood supply tolarge muscle groups increases.b)Blood pressure and heart...
- Q 1A.) Explain the BRAF V600E mutation and how it impacts MAPKsignaling.1B.) How would treatment with an EGFR inhibitor impact MAPKsignaling in cells with V600E?
- Q How did humans domesticate crops 10,000 years ago? Describe theprocess of domestication for at least three crops, including whichtraits have changed in those crops during the domesticationprocess
- Q Question 1: The alien species has decided that they will use aspecial ray gun to destroy all of a specific type of organellesfrom all of the cells of your outer...
- Q Since we are all so closely related, it is amazing that we seesuch tremendous diversity in the human population. List threereasons why phenotypic traits such as skin color, eye color...
- Q You are given the task of creating a genetic map of three genesof Drosophila melanogaster . The genes are all located onthe same chromosome. The genes are for body color,...
- Q Available data on the problem of alcohol in the public health ofthe community.
- Q \"A selectively permeable membrane is essential for lifeâ€.Critically discuss this statement using a range of relevantexamples of your choice.
- Q Genes often interact with one another. The term epistasis isapplied to cases in which one gene alters the expression of anothergene that is independently inherited. In Labrador retriever dogsone gene...
- Q What happened to the adaptive landscape of Daphne over the lastyears of the study? How does this change relate to hybridization,and how and why do species normally guard againsthybridization?
- Q A microscopic cluster of Staphylococcus aureus istransferred to the surface of your skin.a.   Describe anydefense mechanisms these cells will have to avoid at this portal ofentry.b.  The microbial cellshave managed...
- Q How is it that we all have the same genes, yet we can havedifferent genotypes for a given gene thatresults in the expression of a differentphenotype? Again, I am looking...
- Q Draw a phylogeny of plants and describe the major evolutionarytransitions that occurred at each branch
- Q Alcohol as a public health problem in the community. Whatfactors contribute to the problem?What are the possible interventions that can be carried out bycommunity health agents?
- Q Chris (Blood Type A; Widows Peak (an autosomal dominant trait),normal skin pigment) and his wife Pat (Blood Type B; No WidowsPeak; Albino (an autosomal recessive trait) have four children.Chris has...
- Q Evolution of Diversity. Two of the majortransitions that occurred in the evolution of life on earth, longbefore any plants or animals were around, involved the evolution ofcyanobacteria and later the...
- Q 1. Which of the following is false concerningMycobacterium tuberculosisIt has a very low infectious doseA large percentage of the world population is infectedProduces granulomas in affected tissuesA positive tuberculin test...
- Q Gregor Mendel described allelic relationships as either dominantor recessive, and assumed that alleles and genes pairs aresegregating independently during meiosis. What are the exceptionsto those two laws of Mendelian genetics
- Q Were you surprised that we were not better prepared forCOVID-19, given what happened with SARS? Explain your answer
- Q What problems, in terms of wavelength sensitivity,explain colour blindness?Stereoscopic vision is necessary to tell whether a bodyis rotating or just changing shape.a. Explain why the right eye needs the input...
- Q What is p53? Why do so many different types of cancer involvep53? What happens to a cell that is carrying damaged DNA if both ofits TP53 alleles become inactivated? What...
- Q You want to use PCR to amplify a 1Kb exon of the human autosomalgene phenylalanine hydroxylase (PH) from the genome of a personsuffering from the disease phenylketonuria, which is due...
- Q DNA Vaccines integrate into the host cell chromosome. Theywill then produce the proteins for immune response within the cellvia the central dogma.How is this different from being infected bya DNA...
- Q What is the difference between tan1 mutants in maizeand tan1 mutants in Arabidopsis? Why must a tan1,air9 double mutant be used in Arabidopsis? Be sure to definedouble-mutant (synthetic mutant)
- Q Describe the 3 levels of defense mechanisms.Describe the importance of mast cells, complementary proteinsand phagocytes in inflammatory response.Why is the lymphatic system important for the immunesystem?Please, type the answers
- Q Describe the series of events that occurs during an actionpotential, including the ions involved, how each ion is moved, andthe change in membrane potentials.• Explain the role of myelin in...
- Q Explain how awareness is created among schools and otherorganizations about public health. Provide examples
- Q 1.Suppose the codon is UUA, what is theanticodon?  2.What is tRNA? Why is itimportant? Â
- Q explain the role of stress in the development of psoriasis.
- Q What is the yield of ATP when each of the following substratesis completely oxidized to CO2 by a mammalian cell homogenate?Assume that a mole of NADH and FADH2 could generate...
- Q 2. Use examples of molecular evolution and DNA sequences fromlecture and the text to illustrate how you can test hypotheses ofneutral evolution, negative selection, and positive selection.
- Q GATA family of transcription factors are important regulators ofcell identity. The family member GATA1 is required for the switchfrom an immature erythroid cell into a mature red blood cell. Aspart...
- Q Howhave some of the world's largest corporations and key environmentalgroups (again, U.S. or international) joined together to push forthe government to impose mandatory limits on carbonemissions?
- Q The future challenges that demand continuous collaboration inthe world public health sector:Explain:Reduce treatment and drug costs in the future.The increase of natural disasters and outbreaks of diseases.The threat of bioterrorism.
- Q 6. What evidence (data/graphs) from the example of marineiguanas (Ch. 11) demonstrates sexual dimorphism and what data orgraphs demonstrate the difference between sexual and naturalselection on females and males?
- Q Which one of the following is NOT a way that humansincreased the carrying capacity of agricultural land during the'green revolution.'Question 1 options:Increased use of irrigation to supply water.Adding inorganic fertilizer...
- Q 4. Define uncoupling proteins (UCPs) and describe what is theireffect in the mitochondrial electrochemical gradient.
- Q Respond to the following in a minimum of 175 words: As you havelearned this week, bacterial cells have the ability acquire genetictraits by swapping genes with other bacterial cells. If...
- Q Examples of endergonic reactions/processes are:a. chemotaxisb. transcriptionc. H+ gradient generationd. Calvin-Benson Cyclee. all are endergonic
- Q Ifyou estimate that an overnight culture has 5.28x10^7 viablecolonies per mL, how would you confirm this? Please draw ALLdilutions and write what dilution each tube and plate representsand how many...
- Q Sketch photograph and submit the scheme of transcription andtranslation for normal hemoglobin and sickle cell anemia. Use yourknowledge of codons, mutations, DNA, RNA and amino acids
- Q explain each of these symptoms seprately1-painful urination2-thick,bloody discharge from male and female sex organs3-burning sensation during urination4-lower abdominal pain5-abnormal bleeding in women6-testicular pain in men7-pain during intercourse8-itching9-painful bowl movement10-heavy menstural...
- Q A plant cell that contains 80% water in the cytoplasm has beenflooded with 40% saltwater. What process will occur that willimpact the size/weight of the cell?Select one:a. Diffusion of salt...
- Q : Develop a public health policy of Malaria EmergingDiseases
- Q Questions 9 to 13 are in reference to the DNAsequence shown in Question 8.Here is Question 8.Question 8:The top strand of the following segment of DNA serves as thetemplate strand:3’...
- Q Microbiology:How many types of B cells are produced in the process ofclonal expansion? Summarize why each is needed for a thorough andlong-lasting humoral immune response to an antigen.
- Q 2) The origin of life on our planet can be traced back to anearly primordial soup and to the origin of RNA. What is the RNAworld? Name of the characteristics...
- Q 6) What is climate change and what we should do about it? Youneed to describe how humans have been impacting on the atmosphere,greenhouses effect, carbon footprint, and climate change impact...
- Q 4) Describe the four evolutionary mechanisms that alter thefrequencies of existing genetic variation in natural populations.You need to define each mechanism and describe at least one exampleof its action in...
- Q You hypothesize that antlers of male deer are costly signals offighting ability that are directed toward other males. Give threetestable predictions that stem from this hypothesis. How would youtest each?...
- Q The Tasmanian native hen (Gallinula mortierii) is a flightlessbird in which males often outnumber females. In this system, eithera pair (male and female) raises offspring, or a trio (a pair...
- Q • Know-how p53 is activated during the cell cycle and what twooutcomes are possible – know the signaling pathways (you do nothave to know how PUMA induces apoptosis, just that...
- Q What structure was present on the polychaetes that is missingfrom the earthworm and leech?
- Q Main functions of the nervous system. Some axons and dendritesare coated with a sheath made of Schwann cells. What is thefunctions of this covering.
- Q 6) CRISPR-Cas9 and genome editing:Briefly explain the prevailing hypothesis for the bacterialorigins and function of CRISPR-Cas9 (prior to its use in genomeengineering).Identify and briefly explain 3 important technical issues thathave...
- Q 1. the reaction for photosynthesis is like the mirrorimage of another reaction calledA) ATP hydrolysisB) redox reactionC) phosphorylationD) cellular respiration2. Photosynthesis consistsof which two set of reactions that are linked...
- Q Define and give examples of convergent evolution• Use a phylogenetic tree to summarize the evolutionaryrelationships among vertebrates• Identify the main characteristics of each major vertebrategroup (fish, amphibians, reptiles, birds, mammals)•...
- Q Question 6:(1 mark)An mRNA has the following codon:5? GCA 3?.What tRNA anticodon will bind to thiscodon?The tRNA anticodon 5'Â Â 3' will bind to the mRNA codon5' GCA 3'.**Please enter your sequence...
- Q 14) Using the following findings of volume flow and osmolaritythroughout a nephron, describe andfully explain the processesoccurring at each of the listed sites of the nephron, to generatethe listed flow...
- Q 2. Â Â Â List and explain one beneficialeffect and one detrimental effect of bacteria.
- Q Name five common characteristics of protein-coding genes and theregions surrounding them.Why is prediction of eukaryotic genes more complex thanprediction of prokaryotic genes?
- Q Uncontrolled cell division is a feature of cancer which canresult from chromosomal translocations. Discuss with examples. 2pages min please.
- Q Directions: Identify the restriction sites foreach of the examples given. Show the cuts, mention if they aresticky ends or blunt, 5’ overhangs or 3 ‘overhangs and the numberof DNA fragments...
- Q Describe how graded potentials are regulated and how theyregulate action potential firing. In your answer, specificallyidentify where on a neuron each event occurs.
- Q Tristan is a lively little boy who attends dailyday-care. He has severe allergies so his parents have not allo toreceive the usual childhood vaccination series for fear of a severereaction....
- Q Define the term mycosis, and differentiate between systemicmycosis, subcutaneous mycosis, and superficial mycosis. If a personcontracted a fungal disease that was caused by the group of fungiknown as dermatophytes, what...
- Q Explain how protists fit into the phylogenetic tree of lifeIdentify the basic structures common to fungi, including: cellwalls, hyphae/mycelium, and sporesGive an overview of the haploid/diploid life cycle of fungi...
- Q Come up with the bestGenus species of bacteria for each case. Given thefollowing description:Gram (+) cocci arranged in grape-likeclustersNon-spore formerProduced the enzyme catalaseBeta-HemolyticProduces the enzyme coagulaseAcid from mannitolYellow-gold colony pigmentNovobiocin...
- Q 1.) Which bacteria grew in thewidest range of temperatures?a.) P.fluorescensb.) B. gloibporusc.) B. stearothermophilusd.) E. oli2.) Which of the followingbacteria gre best at the lowest osmotic pressure?a.) S.ruberb.) E. colic.)...
- Q What are strengths and weaknesses of each of the major types ofepidemiologic study?-Randomized controlled trial– Cohort– Case-control
- Q What is the effect of point mutations in DNA onproteins?How does this relate to phenotypic variation,genotypes and alleles?Answer in 4-5 sentences giving a REAL example of such amutation. Â
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