Biology question and answers for July 05, 2023
- Q Describe the difference between Positive Strand RNA Viruses,Negative Strand RNA Viruses, RNA Retroviruses, and DNA Viruses.
- Q Coastal rainbow trout (Oncorhynchus mykiss) movebetween marine and freshwater systems yet are homoiosmoticorganisms. What physiological challenges do these fish have to meetin each environment (marine and freshwater) affect of temperature,ect?...
- Q ( dichotomos key )Describe these nine groups:Malva sylvestris: Petals 18-25 mm, flowers borne in fasciclesin the leaf axils,Malva pusilla: Corolla equalling the calyx, flowers borne infascicles in the leaf axils,...
- Q The disease beriberi is caused by a deficiency of thiamine inthe diet. Why is this disease often associated with metabolicacidosis and neurological disorders?
- Q Which of the signaling receptors are generally activated bydimerization induced by binding to two sites on their ligand?
- Q “Coupled transcription-translation†means _,and the coupling contributes to gene expression regulation via___.Atranscription can start before the end of translation, lacIrepressionBtranslation can start before the end of transcription,attenuationCtranslation can start before...
- Q What is the advantage of using rDNA as a rapid method ofidentifying organisms? Is it necessary to have a culture to be ableto carry out this detection? What method of...
- Q Discuss the general structure of the eukaryotic promoterincluding in your answer how a limited number of transcriptionfactors allow the regulation of gene expression.
- Q A mutation changes the codon CAA to UAA. This is an example of__ A. transition, nonsense mutations B. transversion, silentmutations C. transition, missense mutations D. transversion,missense mutations E. transition, silent...
- Q What are the lesions found in the lungs in mycobacteriumtuberculosis?
- Q Compare and contrast asexual and sexual reproduction: what arethe principle advantages and disadvantages of each? Why do nearlyall living organisms have some form of sex during their lifecycle?Explain the two...
- Q Describe the wrapping structure that is used in the DNA to take itfrom a double strandred helix to a comapct chromosome.
- Q Topic: Seed Germination-Definition of process:-Hormone(s) involved:-Cells or tissues that produce the hormone:-Briefly describe the nature of the response (use diagrams ifyou wish):-Evolutionary explanation for the response (i.e why wold plantscapable...
- Q Describe the types of interactions that regulate geneexpression. (Please use these terms in your answer)Regulatory sequencesEpigenetic changesHistonesPhenotypeTissue specific proteinsTranscription factors
- Q 5.Briefly describe two major theories of human evolution and theevidence that support them.
- Q Regarding cooperation and altruistic…Part A Why is cooperative behavior easier to explainpurely with individual-level fitness than the altruistic behavioris?Part B What circumstances DO favor the evolution ofaltruistic behavior?
- Q #2I post this question twice, please don't answer this post if youalready answer the other one, if you can answer different answerthat's fine. REASON WHY I POST IT TWICE, I...
- Q 1. What is a problem that a cell needs to overcome if its volumeis very large relative to its surface areas? How have Eukaryotesbeen able to get around this problem?2....
- Q 4. You want to clone a 1.5 kb cDNA. Which vectors discussedwould be appropriate to use? Which would beinappropriate? Explain your answer.5. You want to make a genomic library with...
- Q A vital feature that is true all signaling cascades is that theyneed to be shut down very quickly as soon as the extracellularsignal is no longer present. Inspect the adrenaline...
- Q Oneof your friends has been diagnosed with myotonic dystrophy. Suchgenetic disorder runs in her family and the condition seems to begetting worse since it appeared generations ago. Provide geneticbasis for...
- Q Describe the structures involved in passing hereditaryinformation from one generation to the next. (Please use the termsbelow in your answer)DNARNAGenerationCircular chromosomesLinear chromosomesPlasmidsProkaryote, eukaryote
- Q In vertebrate societies, what are the costs to an individual whomakes an alarm call? Based on research in ground squirrels, whichindividuals are most likely to make alarm calls, and what...
- Q 3a. Describe two characteristics that antibiotics commonly shareusing the peptidoglycan-inhibiting drugpenicillin as a specific example.b. Would you predict that penicillin would be bacteriostatic orbacteriocidal? Would it therefore be aneffective antibiotic...
- Q Every year, Christmas Island in the Pacific is overrunwith over 120 million red crabs(Gecarcoidea natalis) moving across land betweentheir breeding ground and habitat and towards the water tospawn.Write and explain at...
- Q 4a. Using SARS-CoV as a specific example, describe howepidemiologists can track infections during anepidemic by a) measuring antibody levels (seroconversion) and b)using PCR methods.4b. During the course of a single...
- Q Describe the fate and function of thebones/cartilages of the mandibular and hyoid arches for each of thefollowing Vertebrate taxa:AgnathaChondrichthyesOsteichthyesLissamphibiaMammaliaBe sure to mention which bones arefound each arch and where these...
- Q Describe how animal bodies (from sponges through thelophotrochozoans) have increased in complexity through the courseof animal evolution. Your answer should include examples fromseveral different lineages.
- Q Fill in the table below concerning chromatin modification.Name of EnzymeFunctionWriter (W)or Eraser(E)?Action leads to open (O) orclosed (C) chromatinEffect on transcription(+/-)Adds acetyl groups to histonesHMTHDACRemoves methyl groups fromhistonesDMTA moth census...
- Q Na+ channels are opened by excitatoryneurotransmitters, while it is the inhibitory neurotransmittersthat will open either chloride or potassium ( Cl– orK+ ) channels.Provide a rationalization for why this is what...
- Q Carbon dioxide (CO2) is a by-product in aerobiccellular respiration, produced partially in this part of theprocess:Select one:Production of ATP in glycolysisProduction of NADH in glycolysisKreb's CycleProduction of oxygen in glycolysisProduction...
- Q Which of the following would result in a protein not beingproduced at all?A. the deletion of a promoter from a geneB. an intron not being spliced from the mRNAC. a...
- Q Arthritis is increasingly prevalent among the United Statespopulation. Although there are several types of arthritis, the mostcommon (by far) is osteoarthritis. According to the CDC, more than30 million Americans are...
- Q FOR #4 A & B I don't know if I did it correctly.....Pleasecheck & the other questions I'm having a heard time on.Thanks!A. You have been given a tube of...
- Q You have the following stock solutions available to prepareyour PCR master mix.250mM Tris-HCl stock solution400mM KCl stock solution20mM MgCl2 stock solution15mM dNTP stock solution10uM Forward primer stock solution10uM Reverse primer...
- Q The researchers want to compare the amount of nitrogen in plantsgrown with bacteria and those without. Which macromoleculein the plant can researchers use to measure nitrogen content in theplants?Enter a...
- Q For each of the cells State their functions andindicate one disease condition each associated with increase anddecrease level of these cells.1. Lymphoid dentritic cells2.Dentritic cells
- Q The Meselson-Stahl experiment proved that DNA undergoessemiconservative replication in E.coli.a. Explain conservative, semiconservative and dispersivereplication. Also, if A new strain of Alien bacteria has just beendiscovered. Their genetic material is...
- Q can immunoelectrophoresis provide an indication of the relativeconcentration of antigen-specific antibodies? why and why not ?
- Q Background information regarding what skin pigmentation isand/or why humans have skin pigmentationWhy dark pigmentation is an adaptation to the selectivepressure(s) found near the equatorWhy light pigmentation is an adaptation to...
- Q What are lipooligosaccharides (LOS) and how does LOS causeGuillain-Barre syndrome or GBS?
- Q Drawing upon the material present in the modules, respond tofollowing questions regarding the significance of the Dmanisifossils.How have the Dmanisi fossils complicated prior assumptionsabout the physical characteristics, mental capabilities, andbehaviors...
- Q How was Raymond Dart able to determine that the Taung Child wasa hominin?Why were others reluctant to accept Dart’s theory that homininsfirst emerged in Africa?What is Lee Berger’s theory of...
- Q The allele \"D\" would be cleaved twice by EcoRI, resulting 3fragments: 839, 262, and 215 bp. The allele with the “d†would becleaved once by EcoRI, resulting in 2 fragments:...
- Q DNA polymerases in all organisms add only 5’ nucleotides to the3’ end of a growing DNA strand, never to the 5’end. One possiblereason for this is the fact that most...
- Q choose if you agree or not with the statement and explainwhy.Fishes become more active & increase their metabolism, astemperature increases. This lead to a decrease of the oxygen demandof the...
- Q Describe and compare multifactorial diseases and monogenic diseasesin terms of heritability, genetic complexity, and study designs forstudying them (one design for each is sufficient)
- Q Review the light dependent and light independent reactions ofphotosynthesis as well as glycolysis, the Kreb's cycle, and theelectron transport chain before starting this assignment.Determine whether the following statements refer to...
- Q What are the roles of the COENZYMES involved inHMG-CoA Reductase catalyzed cholesterol synthesis in humans.
- Q 4a. You want to test the hypothesis that the microbiome of amilk-fed infant is different from that of a formulafedinfant. Describe how you would test this hypothesis.4b. Assuming you do...
- Q 3a. Describe how genetic evidence using phylogenetic treessupports the endosymbiosis theory thatmitochondria and chloroplasts evolved from bacteria.3b. It has been observed that certain antibiotics that inhibit thebacterial ribosome can also...
- Q In class, we talked about the elements for aneffective signal. Courting male peacock spiderDescribe the all of the components of this display.What modalities of communication might be in use (e.g....
- Q Signature-tagged mutagenesis is a genetic method for identifyinggenes that encode virulence factors. Explainhow this method identifies attenuated bacterial strains that are nolonger virulent.Explain thoroughly and completely
- Q What factors do you think are responsible for the growth of thelarger brain of hominins over time?
- Q What are some ways that new species can arise?Describe how natural selection can lead to evolution.What are genes and genetic diversity? What is the relationshipbetween genes and evolution?
- Q Clearly explain how Photosystem II collects energy forphotosynthesis, the products of PS II, and how PSII is related toPSI in the photosynthesis pathway.
- Q What environmental and/or cognitive skills do you thinkseparated early Homo species from the earlier hominids from whomthey were descended?
- Q Explain the terms passive and active transport andhypo/iso/hyper-osmotic concentrations. How is concentration relatedto transport type? Explain in terms of effects on animal and plantcells.
- Q Look over Samantha's Handout of Information you were providedabove. Similar to how you wrote about your goals for your own DietAnalysis, use Samantha's information to answer these questions.Do you think...
- Q 1. What was the Neandertal diet like? What evidence haveanthropologists discovered to support our current understanding ofwhat Neandertals ate?
- Q 1.The RB alleles are defined as: RB = Wildtype and rb = loss offunction.A retinal cell with the genotype RB/rb will display theretinoblastoma phenotype.TrueFalse2.Retinal cells with the genotype RB/RB will...
- Q For each of the following situations, briefly discuss whatwould happen (physically and physiologically speaking) and why,relating this back to the hormone(s) and gland(s) responsible.What happens if you …Drink too much...
- Q Qu. 5. a) List the components of a generic electron transportchain in the correct orderb) List the components of an electron transport chain used inaerobic respiration in the correct orderc)...
- Q What are the Pros and cons of projecting models to differenttimes and/or places is SDM?
- Q 11-The ability of the human body to maintain a relativelyconstant internal environment is known as homeostasisSelect one:TrueFalse12-Children born with Down syndrome have inherited an extrachromosome, so their diploid number is...
- Q 24 Match each renewable energy to the description that bestfits.Makes use of the earth's thermal gradient or internal heat toproduce electricity or for a heating/cooling system.Provides greenhouse gas free electricity...
- Q A pathogenic (disease-causing) E. coli bacterium livingon a cold piece of dirty romaine lettuce in your fridge suddenlyfinds itself in the nice, warm, and cozy human intestine. How willthis bacterium...
- Q Describe the SARS-CoVid-2Â Â virus replicationcycle, describe the attachment molecules, mechanism of penetrationand uncoating, where the genome is replicated and how the virusexits the cell.
- Q 1-Someone who is heterozygous for a recessive genetic illness issaid to be ________.Select one:a.epistaticb. pleiotropicc. a carrierd.allelic2- A group of organs in the body that have a common functionmake up...
- Q 13. What is the difference between thedevelopment of the male reproductive tract and thefemale reproductive tracts? (think ducts)
- Q Name two autoimmune diseases of the lymphatic system. Includedetailed info about each disease.
- Q Question 26 Why are non-point sources of waterpollution harder to control then point sources? Give an example ofa point source and an example of a non-point source of waterpollution.  Describe with...
- Q Use the Beer-Lambert law to explain how a colorimetric assayworks in the spectrophotometer. In your answer, define thefollowing terms; chromophore, extinction coefficient, absorbance,transmission and reagent blank.Most of the spectrophotometers in...
- Q 1.compare and contrast the organization of primary tissues in youngroots of eudicots and monocots.2. compare and contrast the organization of primary tissues inyoung stems of eudicots and monocots.
- Q Currently, large body of evidence in the world that smoking isthe cause of numerous life-threatening diseases such ascardiovascular and pulmonary diseases along with different kinds ofcancer. Despite the wamings given...
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