Biology question and answers for August 29, 2023
- Q 1. Describe the nature of the carbon cycle, the transfer ofcarbon within a biological community, and how humans have impactedthis very important nutrient cycle.2. Evaluate the role that humans have...
- Q For which of the three types of endocytosis is transcytosis asubtype? What makes this the best category of endocytosis whenconsidering the cell types which typically use transcytosis?
- Q Regarding protective geochemical barriers:1) Definition2) Goal and principle of biogeochemical barrier3) Goal and principle of chemically reactingbarrier4) Please list groups of the anaerobic bacteriainvolved in creation of biogeochemical barriers and...
- Q A DNA strand reads 5'AATCGTAGTC3'. The adjacent strand shouldread:3'AATCGTAGTC5'3'TTAGCATCAG5'5'TTAGCATCAG3'None of the aboveAll of the above
- Q Address the following; in youropinion, what human impact should we be most worried about?Regardless of your opinion, make sure you justify youranswer.
- Q Biology of Stem Cells:You injected 1000 Ovarian cancer stem cells into a SCIDmouse and a tumor forms. How do you determine tumorigenic potentialof the cancer stem cells
- Q 1. Interspecific interactions have evolved over many generationsand been favoured by natural selection which is why theseinteractions persist today. Discuss this statement with referenceto at least five (5) types of...
- Q Explain why the (Na+-K+)-ATPase carriesout transport in one direction only.
- Q How would you prepare the following solutions? Unless statedotherwise, assume that the solvent is purified water and that youwill dissolve the solute in a lesser amount of solvent and then“bring...
- Q Biology of Stem Cells:Thanks!1a: A miRNA regulates its target mRNA by degradation.Let’s assume miRNA-199 targets Blimp1. Which progenitor populationin the developing embryo will be affected?1b:How does this affect your ability...
- Q Describe the process of phagocytosis and the materials involvedfrom the endocytotic event, to the eventual exocytotic event. Inthe case of a phagocytosed pathogen, in which step is the pathogenmost likely...
- Q Explain the detailed process for a cell taking in water from theperiphery. What are the dangers associated with taking in water,and how are they overcome?
- Q Cystic fibrosis is a recessive disorder. If a child comes fromtwo heterozygous parents, what is the chance that the child willhave it too?25%75%50%100%
- Q You are charged to treat industrial wastewaters suchas tannery wastewater and pulp mill effluents carrying hazardouswastes.1) How can you enhance the biodegradation of thesewastewaters? List all possible options available.2) What...
- Q 1.Why might the heart be referred to as a double pump?2. There are four valves in the heart. Name each valve, listits location, and give its function.3. List the features...
- Q Predict which organelles would be likely to have receivedtheir proteins via posttranslational importRemember to consider that posttranslational import is analternative mechanism for import into the ER lumen.List the types of...
- Q Discuss the potential fates of transmembrane proteins andexplain where you would expect to find a particular domain of aplasma membrane transmembrane protein based on where this domainwas found when the...
- Q Manipulations of DNA often require the addition of magnesium.Why ?
- Q How were core promoter elements identified?How would you do this in a new organ
- Q Why is the incidence rate of melanoma on the rise and why dosome melanoma drugs, like Nexavar, work poorly, but drugs likeKeytruda and Tafinlar work significantly better?
- Q Discuss how active symporters and antiporters differ fromfacilitative symporters and antiporters.Discuss why it would be wrong to categorize the Na+/K+ ATPaseas a coupled active transporter instead of as a pump.Explain...
- Q Duplication of a genome once per cell cycle is, in essence, abiosynthetic process and, hence, demands the input of energy.Moreover, successful semi-conservative replication of the genomicDNA requires the action of...
- Q what is the bacteria of that is gram negative, acid fastnegative, and endospore forming? there is growth on blood andmacconkey not MSA.options:1, salmonella pulloram2, enterobacter aerogenes3, strep. mutans4, micrococcus luteus5,...
- Q Which of the following is not a difference between ionotropicand metatropic receptors?A. Number of subunitsB. Presence of channelsC. Response SpeedD. Influx of ionsE. Neurotransmitter binding siteIn an experiment, a student...
- Q Discuss the functions of molecular chaperones and compareHsp70 family chaperones with chaperonins (i.e. Hsp60-familychaperones)Describe the various types of posttranslational modifications(note: protein splicing will not be covered)Compare cotranslational and posttranslational import,discussing...
- Q 16. For each of the following, what would happen if the listedjunction didn’t exist? (tow sentence each)1. Adherens2. Desmosomes3. Hemidesmosomes4. Tight5. Gap
- Q Explain the general mechanism for the simultaneous transportof Na+ and K+ by the Na+/K+ ATPase (aka. Na+/K+ pump)describing:The result of this transport on the concentrations of Na+ andK+ inside and...
- Q Analyze what is meant by \"the transport of an ion across amembrane is determined by its electrochemical potential.\" In doingthis, describe the factors that must be taken into account whenconsidering...
- Q A patient with recurrent Neisseria infections is evaluated forcomplement deficiency. C3, C4, and C5 levels are all within normallimits. CH50 values are below the reference range. What couldexplain these results?A....
- Q Describe the three kinds of stimuli that are responsible forthe opening and closing of gated ion channels in animal cellsDiscuss the general characteristics of porins and explain howthese are similar...
- Q Describe the role that mobile DNA elements may haveplayed in evolution.PLEASE cite source(s) and NO wikipedia. thankyou!
- Q Define, compare, and contrast direct and indirect competition.Provide an example of how each of these general phenomena shapesthe distribution of organisms in shallow marine habitats
- Q Which statement below best describes the difference betweenquantitative and discrete traits:(a) discrete traits result from the action of many genes, whilequantitative traits involve a single genetic locus(b) discrete traits cannot...
- Q \"A key assumption is that crossing over is random. In whichcase, would you have an equal number of recombinants?\"Does this mean that each of the totals for the recombinantgroups should...
- Q why in lab do you usually fill the dissecting tray with about2-4 cm of water?
- Q Discuss the location, general characteristics, and relativeabundance of glycolipids and glycoproteins in cellularmembranesDescribe the general functions of the glycolipids andglycoproteinsCompare the mobility of membrane proteins to that of membranelipids and...
- Q Discuss the general structure and function of lipidraftsCompare the 3 types of membrane proteins in terms of theiraffinity for the hydrophobic interior of the membrane and thefunctions they typically have...
- Q Discuss the location, general characteristics, and relativeabundance of glycolipids and glycoproteins in cellularmembranesDescribe the general functions of the glycolipids andglycoproteinsCompare the mobility of membrane proteins to that of membranelipids and...
- Q KIA (Kligler Iron Agar) Slant KIA is the most complex mediadescribed in this exercise, and it is essential that you use thelab manual and the relevant videos for support when...
- Q Pick one class of CFTR mutations and brainstorm 2 examples ofspecific mutations that could fall in the class you have chosen.Many versions of correct answers are possible for each classmutations....
- Q 1. Discuss another important function of the electrochemicalproton gradient that is indirectly related to ATP production.2. Explain what an uncoupling agent is and describe howuncoupling agents dissipate the proton motive...
- Q 1. Describe the general structure and functions ofmitochondria2. Explain how the processes of fission and fusion affect thenumber, length, and degree of interconnection of mitochondria3. Describe the structure/composition and function...
- Q 1. Explain how aerobic pathways permit generation of more ATPthan anaerobic pathways.2. Explain the 2 stages of oxidative phosphorylation3. Explain how the electron transport chain can establish anelectrochemical gradient across...
- Q which isolation technique will be lest suitable to the isolation ofsalmonella typhi? streak plate, pour plage or spread plate
- Q 1. Describe how redox potential relates to the affinity forelectrons.2. Explain In addition to ATP, what is another product of theelectron transport chain?3. Describe the components of the proton-motive force,discussing...
- Q Overfeeding, Disuse, and CardiometabolicOutcomes1. Explain why a child who goes to school without eatingbreakfast would have difficulty concentrating onschoolwork.2. Explain why caloric restriction alone would not be afeasible way to...
- Q 1. Given the following fatty acids: Caproic Acid,Valeric Acid, Stearic Acid, Oleic Acid, Arachidonic Acid, PalmiticAcid, Cerebronic Acid, Timnodonic Acid and Cervonic Acid.1a. Group them into saturated and unsaturated fattyacids....
- Q Labrador retriever dogs have three coat colors: black, brownand yellow. The color of thepigment deposited in the hairs is determined by agene with two alleles (B or b). TheB allele...
- Q 1. Explain why the stepwise oxidation of glucose can be usedto generate ATP and reduced electron carriers,2. Generally describe the series of events via which pyruvateis further processed after glycolysis...
- Q Are there holes in the scientific research of gmo's thatwe should be looking at?
- Q Biochemistry majorThe relationship between vitamin D and chronic obstructionPulmonary disease, very detailed explanation
- Q What are some scare tactics and misuse of science againstGMO's?
- Q What are some of the issues or problems that arise because ofGMO's? (Ethical, or environmental,).
- Q Explain the lifecycle of a typical Trematode fluke, Fasciolaheptatica. What happens during the Fasciola lifecycle if the larvaeget into the wrong host?
- Q What are some of the potential problems of using GMOs inthe food supply?
- Q Systematic reviews are not free of biases. A meta-analysis wasrecently published that examined the association both red andprocessed) meat consumption and colorectal cancer. In their resultsthe authors reported that the...
- Q 4.During the course of the development of our understanding ofthe structure of the plasma membrane, it was at one pointhypothesized that the proteins in the membrane coated the lipidbilayer on...
- Q why did endosymbiosis not occur by a â€proto-eukaryoticâ€cell phagocytizing another cell?
- Q 8. TuberculosisThe genus mycobacterium contains over 50 species withseveral human pathogens of concern.Mycobacteria are distinguishable from other types of bacteria bythe presence of wax layers andhigh molecular weight fatty acids...
- Q There are two\"arms\" of the immune system, Innate (non-specific) and Adpative(acquired).What are the advantages of a cell-mediated immune response?Recall the steps involved in phagocytosis. Now, speculate on theconsequenses if an...
- Q This questions are from Evolution class1. In a short answer: What does the evidence point to as theancestors of eukaryotes? How did eukaryotes form? Your answer2. Mitochondria have their own...
- Q what are skin color pigments? Where are they found?How are they regulated?
- Q In Habersham County, Tom was feeling slightly nervous as heexited the staff loungeand entered the hustle and bustle of County Hospital’s ER tobegin his first shift as an RN. The...
- Q Explain how1- how the protons and neutrons in an atom can give rise todifferent elements and also to different isotopes of the sameelement.2- how the electronegativity of sodium and chloride...
- Q Consider MN blood groups in humans. Suppose there is apopulation of 800 individuals. The following data were collectedfrom the population:Phenotype  # of IndividualsM170MN410N220(A)What is the frequency of the two alleles, LMand...
- Q You have isolated two temperature-sensitive strains of yeast(which you have named giant and tiny) that show very differentresponses to elevated temperature. At high temperature, giant cellsgrow until they become enormous,...
- Q •What protein creates membrane potential?• How can action potentials be expedited?• Do neurons always produce an action potential when theyrecieve input?
- Q Which of the following environmental factors is highlycorrelated with color vision in fish?water temperaturewater salinitywater depththe coloration of prey
- Q Explain the difference between non-disjunction during Meiosis Iand Meiosis II. Which is more detrimental to the geneticcompositionof the gametes? Explain your answer
- Q If a diploid cell is 2N=8, draw the chromosomes of thefollowing. How many chromosomes and chromatids would you see on thecells in the following stages.a) Nullisomic for chromosome 2 in...
- Q 24. What is meant by the statement ‘sea level rise is relative’?Relative to what? How can sea level be rising on the North Carolinacoast but declining on the Alaskan coast...
- Q Question 11 ptswhich of the following events turns on/activates T and Bcells?  Group of answer choicesfeverT and B cells bind to the antigen (epitope) that theyrecognizeRelease of type-1 interferonsantibodies bind to...
- Q Explain how the depolarization stage of an action potentialoccurs and provide the change in electrical charge duringdepolarization. Be sure to address driving forces (gradients) inyour answer.
- Q There are two theories to explain how altruistic behaviorevolves: reciprocity and kin selection. A. What is altruisticbehavior? Briefly explain why it is difficult to explain theevolution of altruistic behavior in...
- Q A new medical imaging device is designed and made forscreening of breast cancer. Describe how experiments can beperformed and used to determine the accuracy, sensitivity andspecificity of the device. Using...
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