Biology question and answers for February 21, 2024
- Q As a result of crossing over, sister chromatids are no longer identical to each other.Crossing over prevents homologous chromosomes from separating during meiosis I.For crossing over to occur, homologous chromosomes...
- Q What are the traits for the five generations?6. iGen known as Generation Z (1997-2012)7. Millennials (1981-1996)8. Gen X known as Generation Xers (1965- 1980)9. Baby Boomers (born in 1946-1964)10. Silent...
- Q Finish the following statement. Select all answers that apply.Species interactions that are mutualistic...:a. may be destabilized by the evolution of "cheating" in which one species obtains a benefit from the...
- Q Orcas (also known as "killer whales") hunt bowhead whales. A biologist wants to know how fast bowhead whales can swim when chased by orcas. She observes female whales being chased...
- Q Why is the operational sex ratio (the relative numbers of males and females available to mate at any given time) often male-biased in natural populations?a. Because males mate more frequently...
- Q Compared to asexual reproduction, the greatest disadvantage of sexual reproduction for most sexually reproducing species is:a. Time wasted in finding matesb. Half the rate of increase (compared to an asexual...
- Q A clade of tropical birds has a larger number of species compared to its sister clade in the temperate zone. Which of the following can explain this pattern?a. There was...
- Q For each of the following pairs of family members provide the coefficient of relatedness. (Assume these examples are from a typical mammal. Answers can be used more than once or...
- Q A researcher collects a large number of birds and measures the sizes of their beaks. This species is known to be monogamous so it is possible to determine which two...
- Q In a small population of sea lions, a mutation has resulted in large white spots on the normally dark brown animals. Over several generations, the sea lions with white spots...
- Q Malaria is a tropical disease caused by a single-celled parasite. People become infected with malaria when they are bitten by a mosquito carrying the parasite. Infection with the malaria parasite...
- Q Some speculate that the eye is too complex to have resulted from evolution. Yet, evidence suggests organisms may have had eyes for nearly 500 million years. What might scientists infer...
- Q Once sexual reproduction evolves in a lineage, that lineage never goes back to asexual reproduction because sexual reproduction is much more advantageous.TrueFalse
- Q Inbreeding (including selfing) in the long term this always leads to negative consequences for the population.TrueFalse
- Q What process is most likely responsible for the striking discontinuity of species distributions known as the Wallace Line?a. the evolution and colonization of species on separate land-masses that only later...
- Q Using the context of this passage, what is the most accurate definition of "miasma"?A. an uplifting auraB. an oppressive or unpleasantatmosphereC. an all-encompassing desireD. a weak, but persistent nagging"Freedom from...
- Q Imagine that researchers have sequenced the genomes of two closely related species of grasshopper. One of the species lives in a temperate climate and the other lives in a hotter...
- Q What are the traits for generation X, Y, and Z?
- Q II. Let Us Think About This. Before you answer this activity, remember that a primary source is information that was created at the same time as an event or by...
- Q How can we build stronger community relations and consensus in diverse communities when we have stakeholders representing several generations?
- Q Match the following pathogens with their mode of motility, if any.Giardia lamblia FlagellaPlasmodium vivax
- Q Compare the pH of the two basic dilutions (0.1 mM & 100 mM NaOH). As the base becomes more diluted, does the pH value increase or decrease? Why?
- Q Compare the pH of milk and vinegar, which one is more acidic? How much is the difference between the pH of these two solutions? How much is the difference between...
- Q Which is the correct scientific name of the bacterium that causes tuberculosis? Koch's bacillus Mycobacterium tuberculosis M. tuberculosis Mycobacterium tuberculosis All the options are correct
- Q Explain some ways terrorism has impacted societies around the world.
- Q Discussion Question 3: Describe, in detail, three examples of Study Strategies.
- Q Discussion Question 2: Describe, in detail, three examples of Self-Regulated Learning.
- Q Discussion Question 4: How have theories of learning evolved over time and what are some drawbacks to those theories?
- Q An esker isa smooth, elongate, parallel hill composed of till and formed from ice sheets.is a narrow, sinuous ridge.a steep-sided mound formed from ice-contact. stratified drifta steep-sided mound formed from...
- Q Glaciers move bythe force of gravitybasal slipall of the other choicesplastic flowmeltwater acting as a lubricant
- Q A medial moraine isa rock-strewn plain created as the glacier retreats.an accumulation of debris that forms at the terminus of a glacier.created when two alpine glaciers converge.an accumulation of debris...
- Q The Northern Hemisphere Ice Ages began about ____ years ago.260 million260,00026 million2.6 million2,600
- Q Which of the following statements is NOT correct?Glaciers in a main (trunk) valley typically erode more than tributary glaciers, creating hanging valleysGlaciers seldom reach the ocean or seas.Glaciers tend to...
- Q Glaciers affect and are affected by which of the following systems?hydrospherecryospheregeosphereall of the other choicesatmospherebiosphere
- Q Loss of ice at the lower end of the glacier is called theOzone of wastageadvancementOrecessionzone of stabilityablation
- Q Ice capscover vast areas of more than 50,000 km.produce floating ice shelves when valley or continental glaciers encounter the sea.occur when glaciers emerge from a steep mountain valley onto broad...
- Q Aseptic techniques are.... a sequence of steps performed to transfer bacteria from one medium to another one used to generate a mixed culture used to sterilize a medium all the...
- Q The part of the microscope that regulates the intensity of the light that entersthe lens is the Iris diaphragm Condenser Course knob Diopter ring Any of the above
- Q Streak plate or streak for isolation is....any agar plate containing a bacteria cultureA method to obtain a pure culture from a mixed culture using aseptic techniques.a method to convert a...
- Q After you inoculate bacteria on an agar plate, why do you place the plate upsidedown in the incubator at 22C?To prevent that water from condensation forms on the lidTo avoid...
- Q What type of microscope is used in this lab?contrastdarkfieldbrightfieldfluorescentelectron
- Q How do you determine the total magnification of a sample observed using a light microscope?It is the number written in the objective used to observe the sampleIt is similar to...
- Q Which information you should write in a tube containing medium and bacteria?O The name of the bacteriaO Your nameO The name of the mediumO The dateO All of the above
- Q To label a test tube, write your name and the bacteria name directly on the tube.TrueFalse
- Q The isolation of a single species of microbe is a(n):inoculummediumpure culturebacterial cell
- Q Large magnitude earthquakes are generally associated with which of the following types of plate boundaries?convergent and transformdivergent and convergentdivergent and transform
- Q You have prepared a smear and stained it with crystal violet. Everything is fine until you examine your slide using the oil immersion lens and you find that you cannot...
- Q Quaternary structure can be found inwatera lipid dropletthe plasma membranean actin filamenta single strand of DNA
- Q Essential amino acids arehydrophilicthe 20 that proteins are made ofhydrophobicimportant parts of your dietpolar
- Q Would phosphofructokinase be more or less active when AMP concentrations are high? Why wouldthis benefit the cell?
- Q Discussion Question 3: What is the definition of Learning and what's its importance?
- Q Stem cells with their totipotent capacity have determinate cleavage.TrueFalse
- Q Match the match the tissue or structure with the germ layer it comes fromnervous systemendodermmesodermectoderm
- Q Select all of the following that are names of immature stages in various animals.Otrochophore.caterpillar.nymph.swimmeret.nauplius.
- Q Tagmata are segments of the body that represent two or more previous body segments fusedtogether.TrueFalse
- Q Which of the following are NOT trends that have occurred during the evolution of the centralnervous system in invertebrates?Increasing the size of cerebral ganglia and formation of a "brain"The processing...
- Q Differentiate between Phylum Porifera and Clade Eumetazoa.O Poriferans have mobile gametes while eumetazoans do not.O The various cells types of Poriferans do not form permanent associations into true tissues during...
- Q Which of the following are sensory abilities that are found among invertebrates? Check all that youthink are correct.visual information.gravitational sensationsound or vibrational sensationlight detectionchemical sensation
- Q If two otherwise dissimilar organisms share similar genomic DNA, to what would you attribute.thegenomic similarity?The shared genes have evolved a number of times and have no phylogenetic significance.The shared genes...
- Q Many insects make larvae that are very different from the adults. What do you think areadvantages of this system? Check all that apply.Adults and offspring would not compete for food...
- Q Terrestrial snails perform digestion through theO use of a crystalline style for the release of digestive enzymes into a mucoid mass of foodO incorporation of food into a mucoid mass...
- Q In a tide pool, a student encounters an organism with: a hard outer covering that contains calciumcarbonate, an open circulatory system, and gills. The organism could potentially be a crustacean...
- Q Put the following in the correct order when a crustacean undergoes ecdysis1523415432153241234513452
- Q The terms "dorsal" and "oral" are synonyms.O TrueO False
- Q Ecdysis isdisintegration of the ectoderm.the feeding tentacles of the Ecdysozoa.development of the ectoderm layer in the gastrula.molting of the exoskeleton.development of the epidermis from the ectoderm.
- Q 2. The main function of the bacteria cell wall is....A. to provide a particular shape to bacteria such as spherical for cocci and rod-like for bacilliB. to be the site...
- Q 1. Which is the correct scientific name for the bacteria that cause bubonic and pneumonic plague?A. Yersinia pestisB. Yersinia Pestis (underlined)C. Yersinia pestisD. Yersinia pestis (in Italics)E. Pestis (underlined)
- Q The highest resolving power or resolution of the compound light microscope isO 200 nmO 200 micrometersO 200 metersO 100 cmO 200 mm
- Q Which type of microscope would you use to see ribosomes inside a cell?A. A compound light microscopeB. A scanning electron microscopeC. A transmission electron microscopeD. Fluorescence microscopeE. Any of the...
- Q Which type of microscope would you use to study the surface and shape of a virus?O SEMO TEMO brightfield microscopeO darkfield microscopeO Any of the above
- Q 6. Which discovery marks the beginning of Microbiology?A. Hook's observation that living things are composed of cellsB. Pasteur's demonstration that microbes are present in air and liquidsC. van Leeuwenhoek's observations...
- Q 8. Pasteur observed in the microscope that good beer hasBythe good beer, he prevented that it gets spoiled.A. Yeast; bacteria; heatingO B. Bacteria; yeast; heatingOC. Yeast; bacteria; refrigeratingOD. Yeast; viruses;...
- Q 1. Microbiology is the study of microbes or microorganisms which are...O Organisms that cause a diseaseO Organisms that can only be seen by using a microscopeO Complex multicellular organismsO Always...
- Q Which of the following strategies can reduce urban sprawl?A. Creating a green beltB. Building long city blocksC. Creating expensive housing in the cityD. Building high-rise homes and offices
- Q Barrier islands do not really protect the coastline from powerful storms like hurricanes.TrueFalse
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