Biology question and answers for July 16, 2023
- Q Chemical modifications of histone tails are often made inchromatin to change the amount of chromatin compaction. Name threechemical modifications that have been observed by scientists to beon histone tails in...
- Q Angela is a 52 year old female with a family history ofhypertension. She works as an office manager, where she sits downat a desk most of the day. Angela reports...
- Q True or False: (PE = Physical Education)1. A degree in Physical Education was historically viewed from a\"generalist\" perspective2. Because of the nature of “physical education activities,†thephysical educator isn’t concerned...
- Q Explain, in great detail, the protocol of DNA isolation.In your explanation, mention which steps and/or materials areimportant in the process, and explain the significance of thesesteps. Following your explanation, describe...
- Q The trp operon: Bacterial cells can take up the aminoacid tryptophan from their surroundings, or, if the external supplyis insufficient, they can synthesize tryptophan from smallmolecules in the cell.  When external...
- Q 1. In general, Bacteria predominate in __________waters, while numbers of Archaea are about equal or show aslight predominance in __________ waters.A) upper /lower                                             B)mid-range / upper and lowerC) upper and lower...
- Q How many pairs of setae are there in each segment of theworm？Does each segment have setae?What body region or segment are the walking legsattached to? What about the swimmerets?What is...
- Q put the following processes of protein synthesis translationsteps in the correct order :A- the next aa2-tRNA attach to the second codon on mRNA locatedin A siteB- then large ribosomal subunit...
- Q what is the evolutionary origin of animals ?type answer please :)
- Q Discuss 2 physiological changes experienced by the human bodywhen in a mindful resting state and how they might affect thecardiovascular system.
- Q Which minerals and vitamins are involved in reproductivefailures commonly reported in animals and poultry?
- Q True or False: (PE = Physical Education)1. A degree in Physical Education was historically viewed from a\"generalist\" perspective2. Because of the nature of “physical education activities,†thephysical educator isn’t concerned...
- Q Explain deviation from Mendel's model of the inheritance oftraits(ie. his principles/theory of inheritance)Â Â (.please use the terms below in your answer)Chi-squareLinked genesmap distanceMultiple allelesPoly genicMitochondrial DNAMaternal inheritance
- Q 1. Attenuation is a regulatory mechanism that has been wellstudied in the E. coli trp operon, involved in tryptophanbiosynthesis. Which of the following accurately describesattenuation?A: The goal of attenuation is...
- Q In corn, the following allele pairs are on chromosome 9:colored (C) vs. white (c)aleurone color; starchy (Wx) vs. waxy(wx) endosperm; and full (Sh) vs.shrunken (sh) endosperm. F1 plantsheterozygous for all...
- Q Vitamin/ MineralRoleDeficiencyToxicityFood SourcesVitamin AVitamin CVitamin DFolateVitamin B12SodiumPotassiumCalciumIronfill the table.
- Q 17) Protein synthesis could not occur without the mRNA, theribosome, and tRNAs- which are RNA molecules that bring the___________monomers of a growing protein to the ribosome and mRNAduring the process...
- Q There are two ways to study receptor responsiveness in culturedcell lines: use a cell line that naturally expresses the receptorof interest; and transfect a cell line with a gene for...
- Q 7) Which of the four major types of cell communicationrequires both signal and target cell to use transmembrane proteinsduring their communication event?A) Paracrine B) Neuronal C) Endocrine D)Contact-Dependent8) When a...
- Q The undigested antibodies and pepsin digested antibodies weretested for haemagglutination. In the haemagglutination assay, thetitre for undigested antibodies is 8 and pepsin digested antibodiesis 4. why pepsin digested abs has...
- Q 13) Which nucleotide monomer is REPLACED by the nucleotideURACIL (U) when a gene (DNA) is converted to an mRNA during theprocess of transcription?A) Adenine B) Guanine C) Cytosine D) Thymine14)...
- Q Addison's disease develops when the adrenal cortex doesn'tsecrete enough mineralocorticoids and glucocorticoids. PresidentJohn F. Kennedy was diagnosed with the disease when he was a youngman. Before he started treatment with...
- Q 3) Embryonic Stem Cells (ESCs) from the inner cell mass of ablastocyst are very valuable for medical research, they are definedas which type of stem cell?A) Totipotent B) Pluripotent C)...
- Q 1. What is DNA polymerase? Explain the roles of its variouscomponents in DNA replication.2. What is RNA polymerase? Explain its role in transcription.How is RNA polymerase similar to and different...
- Q How may pollination occur in the angiosperms? Are there anysignificant advantages or disadvantages to this pollinationstrategy?
- Q How is transcription initiated and terminated? What is theimportance of the promoter consensus sequence? How and why doconsensus sequences differ from one another?
- Q 5. You have a dialysis bag containing 15-mL protein solution in0.20 M NaCl. a. Would it be more efficient to dialyse this solutionagainst i)one 2 L volume of buffer until...
- Q A group of scientists wants to determine if fin length variationis genetically or environmentally controlled. They think thepresence of predator pressure may be an environmental determinantof fin length. The scientists...
- Q 1. We know that an F+ cell can donate its F plasmid to arecipient cell to create a new F+ cell.But what about an Hfr? Can an Hfr transfer its...
- Q What is the name of the tissue lining the organs inthe peritoneal cavity?
- Q 9. Which of the followingstatements is true of atendon?a. joins two bones over aball-and-socket jointb. connects muscles tobonesc. can be either fast-twitchor slow-twitch typed. is found between fibrousand cartilaginous joints10....
- Q 1.) Which portion of the autonomic nervous system mustbe most active in the genitals for vaginal lubrication tooccur?a. Parasympatheticb. Sympatheticc. Somatic2.) The human clinical syndrome in which a fetusproduces produce...
- Q 16. Name three of the four parts of the axial skeleton.17. Name one type of moveable joint and give an example of where itis found.18. Name the type of bone...
- Q Â Define the following terms and give an example of each: Ionic bond, polar covalent bond, non-polar covalent bond, hydrogen bond.
- Q Discuss how adaptations allowed plants to move from an aquaticenvironment to the variety of habitats they inhabit today. You maywish to start out discussing single celled algae and include thetransition...
- Q As you may know, gene transcription begins with the assembly ofthe transcriptional machinery (TFIIA-H proteins) at the corepromoter of genes. Where do you think core promoters are morelikely to be...
- Q Then on neuron one show me what the neuron is like at restingstate, please include:a. sodium potassium pump The sodium-potassium pump (PDB entries2zxe and 3b8e ) is found in our...
- Q Compare and contrast the four types of memory;episodic memory, semantic memory, working memory, and proceduralmemory.
- Q Compare and contrast Gleasonian vs. Clementsiancommunity Ecology. Provide examples that support each. What is theconsensus as to which seems to best describe mostcommunities?
- Q Which gives off the most energy?a. DNA replicationb. fermentationc. translationd. Calvin Benson cyclee. cell division
- Q Compare and contrast exotoxins and endotoxins with regard totheir: a) chemical nature, b) source, c) effects on human bodycells and resulting symptoms, and d) examples.
- Q Compare the adaptations of plants in Tropical Rainforests andTemperate Forests
- Q A frame shift mutationa. can lead to a longer proteinb. can lead to a shorter proteinc. does not change the resulting proteind. changes the way codons are read by the...
- Q Discuss the role of Ixodes scapularis and Ixodes pacificus inLyme disease.
- Q Describe how and when peptidoglycan synthesis is inhibited bythe antimicrobials.
- Q Which of the following represents an example of coevolution?Group of answer choicesOver time, peppered moths shift from having mostly light-coloredwings to mostly dark-colored wings.The majority of human babies are born...
- Q 5-8 different features of the native PNW Temperate evergreenforest biome.
- Q Explain why the study of landscape ecology is gaining importancein urban areas
- Q Select two diseases that involve different arthropodvectors in theirepidemiology. Discuss each disease and describe the roleof each vector in the life cycle of the pathogen and establishmentof the disease.
- Q 3. Assume that in humans, right-handedness (R) is dominant overleft-handedness (r). A left handed man marries a right-handedwoman. They have ten children all right-handed. What are thegenotypes of all individuals...
- Q 1. When a horse is mated with a donkey a mule isproduced. The horse has 19 pairs of chromosomes in each cell; thejack has 33 pairs.a) How many chromosomes are...
- Q When a species occupirs a wide area, its phenotyprs usually varyactoss its geographic range. This variation results from differentevolutionary processes in different environments.Contrast adaptive evolution from non-adaptive evolution andgive an...
- Q Adam tells you that bacteria are so primitive and uninteresting.If it weren't for their disease-causing ability, we wouldn't careabout them. Do you agree? Use three reasons to explain yourposition.
- Q A strict anaerobe can gain its energy from:Chemolithotropyanaerobic respirationglycolysisfermentationall are correct
- Q Which has a wider array of structures: proteins, DNA, or RNA?Explain why.In your own words, explain common functional relatedness,structural relatedness, and ancestral gene relatedness of conservedregions of proteins.Explain why protein...
- Q DNAreplication
- Q A topspin will result in less pressure on the bottom of theballtrue or false
- Q Compare the adaptations of plants and animals in lentic andlotic habitats.Thank you
- Q 1.Does the doubling of thickness in membranes affect thecross-sectional surface area or the diffusion coefficient in Fick'sLaw of Diffusion?2. Which of these reasons describe Darwin's concept ofevolutions as \"descent with...
- Q For each of the following biological issues explain: (a)possible ethical issues involved; (b) two sides or views of theissue; (c) possible separation of scientific versus societal viewand opinions.1. Cloning3. Rare...
- Q Compare/contrast MHC-I and MHC-II proteins, including the typesof cells that display each.
- Q The flu infects millions of people in the US every year andkills about 50,000 people every year. What do you think aboutgetting the flu vaccine every year?
- Q Describe both potential benefits and concerns with the geneticmodification of organisms.
- Q Life histories are often organized along a slow-fast continuum.Contrast the life histories of organisms at the slow end of thecontinuum with the lifr histories organisms at fast end.Give an example...
- Q Signal Transduction:A) Explain how growth factors, acting through the signaltransduction pathway, regulate cellproliferation.  Names of specific proteins and theirfunction must be given.B) Give 2 specific examples of how an alteration in...
- Q Contrast the mechanism that freshwater and saltwater animals use toosmoregulate
- Q All mutiple choice I need all 3 pleaseWater molecules have a polarity, which allows them to beelectrically attracted to other water molecules and other polarmolecules by weak chemical bonds known...
- Q Mulitple Choice please answer all 3 no need to go in DepthOne mole (mol) of glucose (molecular mass = 180 daltons)is.a.180 × 1023 molecules of glucoseb.1 kilogram of glucose dissolved...
- Q Discuss how the use/purpose of horses has changed over time anddescribe how the horse industry differs from the various livestockproduction animals we've discussed this term. Discuss the structureof the horse...
- Q Twoweeks ago, you were playing with a guitar at home – an instrumentthat you have been playing for ten years. Your mother came backfrom work and began talking to you...
- Q Real time PCR: how is it analyzed? what can be done to improvereal time PCR? How do you know if the bullfight was good or not?What does it mean if...
- Q 4. Give a detailed example of how one's sensory memory can beeffectively transformed into the following three types of long-termmemory: (a) semantic memory, (b) episodic memory and (c) proceduralmemory. [20%]
- Q Several of our readings in past weeks have been on the effectson health of a microbiota shift. One example is the study ofmalnourished Malawian twins who had developed kwashiorkor. CanKoch's...
- Q Explain in your own words the James-Lange theory of emotion.[10%]
- Q Please explain the following:Understand the family of TGF beta signaling molecules(ligands).Understand that the TGF beta superfamily of growth factorligands are synthesized and secreted in an Inactive form, and needto be...
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