Biology question and answers for September 22, 2023
- Q Humans are bipedal, terrestrial omnivores. As a species, we areadapted to quite a range of habitats, from deserts to mountains andfrom rain forests to tundra. Ultimately, however, we are descendedfrom...
- Q n a 800 word essay describe the path followed by an amino acidfrom absorption to delivery to a cell. Compare this path with theone followed by a large fatty acid....
- Q 3. What are the major elements required for microbial growth,and how are they used by the cell?
- Q which are necessary for a general signal cascade in the immunesystem to activate transcriptioni. receive a signal that may be a soluble proteinii. a membrane receptoriii. protein kinasesiv. phosphatasesv. transcription...
- Q amSuppose you are studying a recently discovered population of rockpocket mice woth dark-colored fir that lives on volcanic rock. Youtake a DNA sample from a member of this new population...
- Q Using DNA replication explain why the offspring from a Lion and aTiger have the same or different number of chromosomes as theirparent.
- Q explain the role of lipids in maintaining the structure of thecell membrane.
- Q Describe the principles of In-frame cloning
- Q Describe the movement of Na+ and K+ ineach event.Events:Resting membrane potentialDepolarization (rising phase)Falling phaseHyperpolarization
- Q A tumor cell with a mutation in Rb can dividein the absence of extracellular signals.A. If the Rb mutation is responsible for the increased celldivision, is it likely that Rb...
- Q Draw a picture of a cell located in the intestines for yourselfand label the surfaces and draw the location of the differentreceptors found on the plasma membranes. Then explain in...
- Q Food Chains on the Isle of DellOn the Isle of Dell, a large island with a variety of habitatsand plant/animal species, the food chain has been left undisturbedby human development.  In...
- Q You have 2 strains of bacteria, strain 1 = trpA- trpB- trpC+ andstrain 2 = trpA+ trpB+trpC-. You grow P1 transducing phage onstrain 1 (you infect strain 1 with the...
- Q What is the role of polar auxin transport in embryodevelopment?
- Q When do the chromosomal strands become double in (1) a somatic cell and (2) a pollen mother cell (microsporocyte)? Cite and discess the evidence for the answer.
- Q Briefly explain the role of chromosomes in heredity and its importance.
- Q Compare and contrasts meiosis and mitosis.  How do thebehavior of chromosomes during meiosis generate variation andexplain Mendel’s law of independent assortment? Long answer,please.
- Q what is mean by doubling time? Has it gotten longer orshorter for the world's population? Cite and use actual numbers inyour answer.
- Q Explain why the motor proteins myosin and kinesin are enzymesand write the reaction that each catalyzes.
- Q What is the value of biodiversity?
- Q Compare and contrast the activity of GLUT-1 and the glucose/Natransporter protein.
- Q 1 - What is the effect on transcription if nearby histones areacetylated?Select one:a. The region is less accessible for DNA Polymeraseb. The genes in this region will be unaffectedc. The...
- Q Describe the reasons why endurance training increases fatoxidation during exercise.
- Q The Central Nervous System is considered “immunologicallyprivileged.†What does this mean? What are the features of theanatomical structures that that enable this status. What are thefactors that can cause a...
- Q A) List one type of error-prone DNA repair mechanism (whichroutinely introduces errors into the repaired DNA) and list thetype of DNA damage repaired. B) List one DNA repair mechanism thatgenerally...
- Q Hospitals are finding the importance of developing strategies tobecome a high reliability organization (HRO). Why would this beimportant in healthcare and share at least 1 strategy that shouldbe used to...
- Q 1.a) What are the activation pathways after pathogenrecognition?b) what is the difference between C1, C3, and C5?c) what is the difference between classical and alternativepathway?
- Q describe four animals’ mating strategies in your ownwords.
- Q 1a. what generates proton gradient? where is it generates andhow does that limit amount of gradient possible?1b. What is oxygen used for during metabolism, and what happensif it is absent?1c....
- Q what are exoenzymes and why are they important in bacterialmetabolism? Supply a specific example.
- Q How does an electrical impulse from a nerve lead to musclecontraction?How does skeletal muscle contract and generate force?How does muscle twitch, summation, and tetanus affect thestrength and duration of muscle...
- Q explain biomechanical economy and movement efficiency anddifferentiate between the two.
- Q Carbon monoxide poisoning often has fatal results. When anindividual is exposed to large amounts of carbon monoxide, itessentially prevents oxygen from being delivered to electrontransport chains. Based on your understanding...
- Q Explain the importance of glycolipids in the plasma membrane,identify where they are produced inside the cell, and describe themechanism by which they are transported to the plasma membrane andpresented to...
- Q A red blood cell has a disk diameter of 0.6 micrometers and anintracellular isotonic osmolarity of 290mOsmol/l at a temperatureof 293 kelvin. The hydraulic permeability of the red blood cell...
- Q 3. Provide a reason for the change from normal arterial Po2,and explain how this change affects oxygen delivery toJaden’s tissues.
- Q Why is the rapid initial growth rate of the hypocotyl-root axisimportant to seedlings? Contrast this with the epigealtype.  (hypogeal or cryptocotylar type ofgermination)
- Q need new and unique answers, please.(Use your own words, don't copy andpaste), Please Use yourkeyboard (Don't usehandwriting) Thank you..PHC 2311.  Discuss Central Line-Associated BloodstreamInfection (CLABI)\"or\" Ventilator-Associated Pneumonia (VAP) outbreak in...
- Q Scientists were successful in creating Dolly the sheep using thenucleus isolated from a differentiated cell from an adult mammarygland. They transferred this nucleus to an enucleated egg andactivated the egg...
- Q Question 1Regulated exocytosis involves __________vesicles that containcargo such as hormones, mucus or ______________and are released inresponse to an __________signal. In contrast, unregulatedexocytosis involves cargo of macromolecules like ____________ andsoluble proteins...
- Q A broad, dense bacterial cell wall 20-80 nm thick andconsisting of numerous interconnecting layers of peptidoglycan.Interwoven in the cell wall are teichoic acids. (2 words)An exoenzyme that hydrolizes starch is...
- Q RNAi is used to functionally inactivate genes in cells and wholeorganisms like C. elegans. Describe the basics of how you wouldknock down the expression of a gene required for muscle...
- Q What is the differential adhesion hypothesis (think \"surfacetension\") and why it is important?
- Q Consider the following naturally occurring forms of Hb. A. HbS(sickle-cell Hb): substitutes a V for a E on the surface B. HbCowtown: eliminates an ion pair involved in T-state stabilizationC....
- Q 1. How does SIV differ from HIV?2. Dr. Hahn and her colleague, Dr. Gould, believe that the factthat AIDS appeared as an epidemic in the 20th century and notbefore is...
- Q 1) How does temperature affect enzyme function? Hint: discusstwo separate processes.2) What is an active site on an enzyme? What is a substrate?3) What is the metastable state, and what...
- Q Question 1Let’s start with a relatively straightforward one – and make ittopical.Briefly explain what qPCR is and why it is differentthan traditional PCR. Address what the q stands for and...
- Q 2.Which of the following is NOT correct with regard to the MCH Ipresentation complex?a. It can bind the CD8 conplexb. It is loaded with antigen inside the phagolysosomec. It can...
- Q Which organ systems expel or excrete waste?
- Q For assistance with my studies, what is the homologiesof sclaes types between chondrichyans (placoid sclaes),actinopterygians (ganoid sclaes, teleost scales), aquaticsarcopterygians (cosmoid scales), and reptile (epidermalscales)?
- Q Is there any evidence that individual stickleback acclimate tovariation in trout predation presented here. Identify potentialacclimations to trout predation.
- Q Identify similarities and differences between the Hyponatremiacaused deaths of Cynthia Lucero and Jennifer Strange. Be sure toinclude details regarding presentation of symptoms and thecircumstances that led to their deaths. (50+...
- Q write a background research for \" the presence of biofertilizersincreases the rate of growth of plants\".
- Q In what circumstances would it be justifiable to compelvaccination against a newly emergent pathogen, e.g., an especiallyvirulent coronavirus, through mandates and criminalization? Discussethical, health, & social issues.
- Q Most of these fatty acids increase blood cholesterol levels byraising LDL cholesterolThese fatty acids raise LDL cholesterol while reducingbeneficial HDL cholesterolThese fatty acids generally lower LDL cholesterol and raise HDLcholesterolThese...
- Q Isle Royale Workbook Question:Increase in food available to moose resulted in the extinctionof both the wolf and moose populatiion. Why is extinction morelikely in this scenario (paradox of enrichment)?
- Q Suppose you invented a drug that blocked the production of LHfrom the anterior pituitary.  1.  How would this affect the menstrual cycle?2. Would this drug be a good method for birth control?...
- Q A student is doing some research on the importance of agentsused in the laboratory room to kill certain prokaryotes andeukaryotes. Can you list the six different agents and what eachspecializes...
- Q In the fruit fly D. virilis, the mutations dusky body color(dy), cut wings (ct), and white eyes (w) are all recessive alleleslocated on the X chromosome. Females heterozygous for all...
- Q Describe a spore forming bacterium stained with the endosporestain and magnified 1000X.Describe the spore and vegetative cell and note the colors youwould expect to see using the stains we performed....
- Q Explain in brief why the study of genetics is important for human society.
- Q How does recombination impact genetic variation in futuregenerations including crossing over and meiosis?
- Q In what types of ecosystems would you find chemoautotrophsrather than photoautotrophs? What trophic level does each groupoccupy?In the Lake Ontario ecosystem, how would you characterize thetrophic positions of the opossum...
- Q Japanese researchers examined mutant alleles of a genethat encodes an enzyme, liver-type arginase, in four patients. Thenormal protein catalyzes the breakdown of the amino acid arginine.In argininemia, lack of the...
- Q What host environmental factors contribute to the spread ofthese organisms Neisseria meningitidis andMycobacterium tuberculolosis ? How might these factorscontribute to the growth of each organism?
- Q Ice has also been observed to increase polymerization. Thisseems counter-intuitive because molecular motion decreases atcolder temperatures. So how could freezing a solution actuallyincrease reaction rates?review Szostak and Battel’s experiment on...
- Q How do we use our knowledge of edge effects to plan thereserves? What information do you need?
- Q 1. What was used before enzymes, if anything beforeceliac disease and lactose intolerance.2. Discuss why lactase are being used:Does it havehigher yields and less waste?
- Q In Drosophila (fruit flies) the genes how,dumpy and ebony are located on chromosome 3. LOF= loss of function.Flies homozygous for a LOF mutation (no gene product made) inebony have dark...
- Q Pick one trace element, learn about it, write about it (200 –300 words), and include citations.
- Q What's the difference between the brain's (sensory) relationshipwith outer toes vs with middle toes? How is this so?
- Q mitochondria
- Q 1. Theory of Aging: Somatic DNA Damage Theory. Discuss for oragainst and provide citation and references. Minimum 250 words.
- Q research conservation efforts“Endangered species in Canda,†Are any species likely to beextinct within the next 50 years? Pick one conservation effort andevaluate published reports. Is it likely that the species...
- Q 1. Please explain how the sequence of events that occurs when acodon that specifies an amino acid enters a ribosome's A sitediffers from the sequence of events that occurs when...
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