Biology question and answers for February 12, 2024
- Q Which of these is the best description of a type-three secretion system?a virulence factor that injects bacterial proteins into host cells.a system that detects external stimuli and triggers internal responsesa...
- Q If you were to conduct this week's NATURAL SELECTION lab simulation using a BLACK & WHITE CHECKERED habitat/background, in which BOTH extremely dark BLACK moths & extremely light WHITE moths...
- Q Brain-heart infusion broth (BHIB) would best be described as:a) an enrichment mediumb) a differential mediumc) a defined or synthetic mediumd) a complex mediume) a selective medium
- Q If you wish to aseptically pick up a sample of cells from a liquid culture, it would usually be best to use a(n):a) inoculating needleb) inoculating loopc) sterile toothpickd) all...
- Q To observe the ribosomes within a cell, which of the following types of microscopes would be best?a) scanning electron microscopeb) brightfield light microscopec) transmission electron microscoped) darkfield light microscope
- Q With respect to the topological density of closed circular DNA,if the linking number and the twist number are not the same, there must be writheif the linking number decreases, the...
- Q Read the excerpt from the Boston non-importation agreement, which appears here. What is the purpose of this promise? to declare independence from Great Britain to force Parliament to repeal the...
- Q Select the correct answer. What is a tribute nation? A. a nation that pays another nation for protection B. a nation that dominates a weak nation C. a nation that...
- Q The liquid medium that can be used to support the growth of both aerobes andanaerobes is known astwo of these are correctcandle jarfluid thioglycollate mediumanaerobe jar
- Q What was issued by the German government in 1916 to appease the United States and promised an end to unrestricted submarine warfare?The Sussex PledgeThe Schlieffen PlanThe Zimmerman Telegram.The Lusitania Doctrine
- Q Diep did some research about classification for a science report. She learned that until 150 years ago, scientists recognized only two groups of organisms: plants and animals. Now, scientists also...
- Q Identify the mass represented in the image. Please enter the numerical answer only without units of measure.
- Q Tailless nonhuman primates are commonly called:apesprimateshomininsHomo habilis
- Q Which of the following is not an advantage of compartmentalising eukaryote cells?a. Faster cell divisionb. Improved protection for DNAc. Improves cellular efficiencyd. Allows cells to become specialisede. Speeds up biochemical...
- Q How did MRSA become resistant to methicillin?mutation in a porin geneacquired a penicillin binding protein that had low affinity for methicillinmutation in a drug efflux pumpacquired a beta-lactamase that could...
- Q Drag and drop the description to its correct category.Slime layerCapsuleFimbriaePiliS-layerLoosely organized layer outside of the cell wallHighly organized layer outside of the cell wallEasily washed off Contribute to pathogenicityComposed of...
- Q Suppose Mr. M finally fulfilled his dreams and got Jennifer Lawrence to agree to go on a date with him. To impress her, he decided to invite her for a...
- Q Drag and drop each statement to determine the type of slide preparation treatment it is involved in.Wet MountHeat FixingChemical fixingUses a slide warmer Uses a coverslip Terminates tissue degradationUsed to...
- Q Drag and drop the organism to its correct Domain.Domain ArchaeaDomain BacteriaDomain EukaryaHalophiles Plants SpirochetesMethanococcus Cyanobacteria AnimalsGram positivesFungi CiliatesProteobacteria
- Q For each characteristic, decide whether the statement describes algae, protozoa, fungi, or helminthsCell wall composed of cellulose Parasitic worms Move by pseudopodia, cilia, or flagella Source of penicillinYeasts and molds...
- Q Match the field of study on the left to its description on the right.Field of MicrobiologyBacteriologyMycologyProtozoologyParasitologyVirologyImmunologyDescriptionStudy of virusesStudy of protozoaStudy of the immune systemStudy of fungiStudy of helminthsStudy of bacteria
- Q Which reactant is oxidized and which is reduce in this reaction?N?H4 + 0? ? N? + 2H?O1. Oxidized =_____2. Reduced =_____
- Q Imagine that the average July temperature on a beautiful tropical island is 40 C. Suppose further that this past July, the average temperature was 42 C. What was the temperature...
- Q Which of the following types of media would be appropriate to use in order to culture a fastidious organism?Check All That ApplyNutrient agarYeast extract agarInorganic salt brothGlucose salt broth
- Q You developed a new chemical that hasgermicidal properties. It has a decimalreduction time of 10 minutes on E. coliunder a certain set of conditions.How long (in minutes) would you have...
- Q Which lab method is used to determine the cell count of only the live bacteria in a sample, i.e. no dead cells counted or detected by the meturbidity measurementdry weight...
- Q Thermophiles grow best at human body temperature and are often human pathogens.TrueFalse
- Q Why did the Guerreros set up a table at the block party?A. They wanted to meet the mayor.B. They wanted to open a restaurant.C. Their house was located at the...
- Q A biofilm is best described as artificially maintained lab culturesa single layer of bacteria on a surfacea multilayer community of mixed microbial species adhering to a surfacea pure culture of...
- Q Order the four steps of Koch's postulates as they would normally be applied.4231Isolate the suspected microbe from an infected host and cultivate it in pure culture in the laboratory.Find evidence...
- Q A set of punctuation marks, single (") or double (""), used either to mark the beginning and end of a title or quoted passage, or to indicate that a word...
- Q On the PHO website, under Test Methods, you'll find information about three commercial assays used to detect COVID-19. Check all the gene targets that can been used to test for...
- Q In the following text, the setting has a direct effect on the character Peak. Which of the following statements is the best inference to explain how the sight of the...
- Q Use the quote to answer the question that follows"1 propose that each freed slave who is a male adult, or the head of a family, will receive forty acres of...
- Q Which of the following best describes the economic problems farmers faced in the late 19th century?crop prices rising increased crop salesexcess amounts of gold being produceddemand to increase farm production...
- Q Review the five I's of microbiology laboratory techniques by completing each sentence.immigrationidentificationintentionInoculationincubationinformation gatheringisolationInspection____involves placing a sample into a container of fresh medium.Multiplication of an organism in a culture is promoted...
- Q What does the Principle of Superposition tell us about fossils?The younger deposits are more deeply buried while the older deposits are more shallowly buried.Things found in the same sediment were...
- Q Which of the following is not a nutrition assessment used by a trained health care professional?Historical informationPhysical examinationsAnthropometric measurementsPersonality profile screeningLaboratory tests
- Q Bacteria grown in limited amounts of nutrients will reach stationary phase whencell divide exponentiallythe bacteria die off due to lack of nutrients and wastes presentthe bacteria are first introduced to...
- Q An instrument called a spectrophotometer is usedalong with a Petroff Hausser chamber to count bacterial cellsto count the individual bacterial cells to measure the populationto grow bacteria and keep them...
- Q A white male, 17 years of age presented at the emergency room with a severe headache, vomiting, and a stiff neck with pain running up his back. On admission, his...
- Q The capsid of a virus is.a phospholipid bilayer that surrounds the nucleic acida subunit of the viral cell wallmade up mainly of polysaccharidesa protein shell that surrounds the nucleic acid
- Q How does the protein p27 regulate cyclin/Cdk complexes?It binds to cyclin/Cdk complexes and inhibits them.It ubiquitinates cyclin/Cdk complexes and targets them for degradationIt is a transcription factor that regulates the...
- Q Which of the following mutations would increase cell proliferation and potentially lead to cancer development?Increased beta-catenin stability/activityLoss of Ras expressionLoss of Bcl2 functionIncreased APC (adenamotous polyposis coli) activity
- Q In the sentence below, the underlined portion is a clause. Identify the type of clause.While the car is being fixed, we will need to take the bus.Dependent clauseIndependent clauseNon-essential clause
- Q Which characteristics work well in a dichotomous key?smooth or roughgreen or roundtriangle or purpletall or bumpy
- Q Myxococcus xanthus produces myxospores when it undergoes starvation-induceddevelopment and fruiting body formation. These myxospores are derived from vegetativecells:That have not finished DNA replication and have divided after starvation begins.That have...
- Q 4.9: Show What You Know Formative AssessmentU.S. v. Nixon upheld the principle of separation of powers and rule of law by stating what about the President?The power of the President...
- Q 3. Consider adding 1 g of breakfast burrito into 999 ml of water. Calculate 1,000-fold dilution forfive consecutive tubes. Explain the dilution created for each tube (A, B, C, D,...
- Q Von Holdt et al. (2008) documented population genetic structure among 200 grey wolves (Canis lupus) in Yellowstone National Park. Based on data collected in their study, the authors inferred that...
- Q "Ahmed inoculated a culture of Staphylococcus in blood agar and after few days, he realized blood cells were lysed. The most likely type of hemolysis he observed is:alphabetagammaall of these
- Q This test determine if hydrogen peroxide (toxic) can be degraded In this test, gas might be produced and collected in a tiny tube in the media If this test is...
- Q Which of the following bacteria will never have a positive catalase test?Obligate aerobeMesophileFacultative anaerobeAerotolerant anaerobeObligate anaerobe
- Q What is the connection between these four pictures?A. They use energy from plants.B. They may have shared the same matter.C. They consist mainly of new matter.D. They contain the same...
- Q When a population becomes divided into two populations which do not exchange genes any longer, they may eventuallybecome two or more separate species. On phylotenetic trees, this event is represented...
- Q Liza is a 48-year-old mom of three whowasreceiving radiation and chemotherapy. Shedeveloped afever and stomach cramps. Shortly after shehad bouts ofdiarrhea and saw what looked like smallamounts ofblood in her...
- Q A young student is troubled by the idea that a bacterium is able to control its diverse and complex metabolic activities, even though it lacks a brain. How would you...
- Q Which of the following is NOT one of the swellings (prominences) which surround the stomodeum in a 4-5,week old embryo?a. lateral nasal prominenceb.frontonasal prominence,c. maxillary swellingsd. mandibular swellings
- Q Your patient obtained a Vibrio cholerae infection from drinking contaminated water. The organism releases vibriobactin which is a siderophore which is a bacterial protein used to capture iron. To counter...
- Q When talking about the immune system, your body can be compared to a country under attack. In this analogy, what are the "soldiers" sent by your body to fight the...
- Q How are mitosis and binary fission similar?A They produce identical daughter cells.B. They occur only in prokaryotes.C. They involve division of nuclei as well as cytoplasm.D. They occur only during...
- Q A researcher investigates a blood disease carried by birds. She isolates an organism from the blood of an infected bird. She finds that the organism is unicellular and has a...
- Q They have also observed the growth of plantlike organisms in the bay. Which is the most likely explanation for the results?A. The apple orchard releases toxic chemicals into the water...
- Q Select the correct answer from each drop-down menu. Starfish are able to reproduce both sexually and asexually. In an area of the ocean that is gradually changing due to increasing...
- Q Lily visits her family doctor because she experiences an upset stomach after drinking milk. The doctor tells her that this symptom is caused by a lack of the enzyme lactase....
- Q During which of the following stages of thunderstorm development does precipitation begin?Developing stageDissipating stageDowndraft stageMature stage
- Q If a person has type B blood, which statement describes the antibodies present in his or her blood?Only anti-A antibodies are present.Only anti-B antibodies are present.Both anti-A and anti-B antibodies...
- Q why does blood sugar spike afterprolonged fasting is finished? and afterfood has resumed?
- Q Which type of quote isSample #2?A. a quote woven into the syntax of the writer'sown sentence structureB. a quote that uses a tagline to introduce itC. a quote isolated from...
- Q The diagram below represents two single-celled organisms.These organisms carry out the activities needed to maintainhomeostasis by using specialized internal(1) tissues(3) systems(2) organelles(4) organs
- Q Catabolic reactionsalways energy.A. releaseB. captureC. absorbD. use
- Q Prokaryotes are theonly organism knownto science that hasDNA.A. circularB. linearC. double helix configuredD. single stranded
- Q Acetic acid is responsible for the sour taste ofvinegar. It can be manufactured using the followingreaction:CH?OH(g)C=0(g)Use tabulated values of bond energies from thetable below to estimate ?H for this reaction.Average...
- Q A definitionpaper should beorganized withA. clear examplesB. definitions inalphabetical orderC. the author's point.of view and preference.for a specific definition
- Q What cause and effectrelationship do you see in thehighlighted passage from Section6?A. The effect of buying a good gift for Jim isDella crying.B. The effect of Della not having enoughmoney...
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