Biological Classification Questions and Answers

Order the four steps of Koch's postulates as they would normally be applied. 4 2 3 1 Isolate the suspected microbe from an infected host and cultivate it in pure culture in the laboratory. Find evidence of a particular microbe in every case of a particular disease. Inoculate a susceptible healthy subject with the laboratory isolate of the potential pathogen and observe the resultant disease. Reisolate the disease agent from the test subject, which now shows signs of disease.

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 or phrase is regarded as slang or jargon or is being discussed rather than used within the sentence is known as -tification of an

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 SARS-CoV-2. E gene RdRp gene Orf1a/b gene S gene N gene Ct gene L gene

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 Himalayan Mountains may affect Peak? (RL 6.3) "This will not do!' he [the concierge (hotel caretaker)] said. "You are missing the setting of the sun.' He pulled the curtains back with a flourish. Behind them were the Himalayas washed in orange and pink light. They were much bigger than I had ever imagined." (Chapter 8, page 51) Peak is surprised by the size of the Hinalayas and realizes that he should have stayed with his mom and sisters in New York rather than attempting to summit Mt. Everest. Peak is awed by the size of the Himalayan Mountains realizing that none of his other climbing experiences have prepared him for this endeavor (attempt). Peak realizes that he has one of the best views of the Himalayan Mountains from his hotel room and is thankful for all Josh has done for him. Peak is awed by the image of the Himalayas and wishes that he could share this view with his mom, Rolf, and his two sisters.

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 land, (with $100 to build a house)... We must make the freed slaves independent so that their old masters can't force them to work unfairly. This can only be done by giving them a small plot of land to farm." -Northern Senator, in a speech delivered to the United States Congress on March 19, 1867 The position stated above outlines the views of which political group during Reconstruction? Reconstructionists Radical Republicans Western Democrats Southern Democrats

Which of the following best describes the economic problems farmers faced in the late 19th century? crop prices rising increased crop sales excess amounts of gold being produced demand to increase farm production for the war effort mistreatment by railroad companies transporting crops

Review the five I's of microbiology laboratory techniques by completing each sentence. immigration identification intention Inoculation incubation information gathering isolation Inspection ____involves placing a sample into a container of fresh medium. Multiplication of an organism in a culture is promoted by ___. Pour plating, streak plating, and spread plating are ___ methods for separating individual microbes from each other. __ involves the observation of macroscopic and microscopic characteristics of microbes in samples. Biochemical, immunological, and genetic testing assist the microbiologist in ___ so that a final ___ can be made.

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 deposited at different times. Things found in the same sediment were deposited at the same time. The older deposits are more deeply buried while the younger deposits are more shallowly buried.

Which of the following is not a nutrition assessment used by a trained health care professional? Historical information Physical examinations Anthropometric measurements Personality profile screening Laboratory tests

Bacteria grown in limited amounts of nutrients will reach stationary phase when cell divide exponentially the bacteria die off due to lack of nutrients and wastes present the bacteria are first introduced to the fresh nutrients cells produced equals cells dying

An instrument called a spectrophotometer is used along with a Petroff Hausser chamber to count bacterial cells to count the individual bacterial cells to measure the population to grow bacteria and keep them in log phase to measure the turbidity of a culture of bacteria in liquid media

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 temperature was 101F. The young man appeared to have trouble hearing during the nurse's interview and also seemed to have trouble concentrating. The history revealed that the young man is a wrestler for the local high school team. He had felt as though he were getting a cold the past few days, since his last meet in Hicksville. He did not smoke or drink, but he had attended a party two days earlier thrown by his girlfriend and the other cheerleaders to celebrate his victory in the sectionals. He had been holding his weight at 162 for the season, so he ate little and did not drink. On physical exam, the physician noticed several areas of small purplish spots on the skin of the back, thigh and arm. The boy thought those were from wrestling. Which of the following is the most likely diagnosis? E. coli induced meningitis Neisseria meningitidis induced meningitis Streptococcus pneumonae induced meningitis Streptococcus pyogenes induced meningitidis

The capsid of a virus is. a phospholipid bilayer that surrounds the nucleic acid a subunit of the viral cell wall made up mainly of polysaccharides a protein shell that surrounds the nucleic acid

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 degradation It is a transcription factor that regulates the expression of cyclins. It phosphorylates and activates Cyclin/Cdk.

Which of the following mutations would increase cell proliferation and potentially lead to cancer development? Increased beta-catenin stability/activity Loss of Ras expression Loss of Bcl2 function Increased APC (adenamotous polyposis coli) activity

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 clause Independent clause Non-essential clause

Which characteristics work well in a dichotomous key? smooth or rough green or round triangle or purple tall or bumpy

Myxococcus xanthus produces myxospores when it undergoes starvation-induced development and fruiting body formation. These myxospores are derived from vegetative cells: That have not finished DNA replication and have divided after starvation begins. That have not finished DNA replication until starvation is over. That have finished DNA replication but have not divided after starvation begins. That have finished DNA replication and have divided after starvation begins.

4.9: Show What You Know Formative Assessment U.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 is limited. Congress has more power than the President. The Supreme Court could force the president to issue an executive order. The President could declare war without the approval of Congress.

3. Consider adding 1 g of breakfast burrito into 999 ml of water. Calculate 1,000-fold dilution for five consecutive tubes. Explain the dilution created for each tube (A, B, C, D, and E) by using a dilution scheme.

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 wolves were actively avoiding breeding with members within their packs and instead appeared to be seeking mates from other packs. The following data are a simplified representation of the authors' results for the sake of example. Observed numbers of individuals by genotype: AA - 40 Aa - 140 aa - 20 a) Using this information, calculate the frequencies of each allele and each genotype documented in this study. b) Assuming Hardy Weinberg equilibrium, what will be the zygote frequency for the next generation of wolves? c) Von Holdt et al. (2008) observed non-random mating in the wolf population, which may suggest that this population is not in Hardy-Weinberg equilibrium. Use a chi-square analysis to determine if this population is in disequilibrium.

"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: alpha beta gamma all of these

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 positive implies that the bacte can do aerobic respiration One of the products of this test is ammonia ✓ [Choose ] Oxidase Voges Proskauer Catalase Starch hydrolysis Indole production Hydrogen sulfide Carbohydrate fermentation Citrate utilization Urease Methyl Red

Which of the following bacteria will never have a positive catalase test? Obligate aerobe Mesophile Facultative anaerobe Aerotolerant anaerobe Obligate anaerobe

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 amount of energy.

When a population becomes divided into two populations which do not exchange genes any longer, they may eventually become two or more separate species. On phylotenetic trees, this event is represented as a: a character state branch or node tip of a branch polytorny a phlogenetic tree root

Liza is a 48-year-old mom of three who was receiving radiation and chemotherapy. She developed a fever and stomach cramps. Shortly after she had bouts of diarrhea and saw what looked like small amounts of blood in her stool. what kind of lab test should I take for this patient?

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 explain their metabolic control?

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 prominence b.frontonasal prominence, c. maxillary swellings d. mandibular swellings

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 the action of this bacterial protein, your patient produces a. interferon b. transferrin c. pyogens d. perforin e. histamine

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 invaders? A. red blood cells B. white blood cells C. blue blood cells

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 nucleus, a cell wall, and the ability to produce spores. What kingdom does the organism belong to? A protista B. sarcodina C. archaea D. bacteria

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 sexual reproduction.

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 of the bay. B. The nitrogen from the fertilizer makes it impossible for plants to grow. C. The nitrogen from the fertilizer made the plants grow too quickly, which hurt the fish. D. The plantlike organisms generate too much oxygen, which kills the fish.

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 temperatures, it is more advantageous for starfish to reproduce because they will be able to

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. Lactase breaks down lactose, the sugar in milk which is made of several parts. What does lactose break down into? monosaccharides amino acids fatty acids nucleotides

During which of the following stages of thunderstorm development does precipitation begin? Developing stage Dissipating stage Downdraft stage Mature stage

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 are present. Neither anti-A nor anti-B antibodies are present.

why does blood sugar spike after prolonged fasting is finished? and after food has resumed?

Which type of quote is Sample #2? A. a quote woven into the syntax of the writer's own sentence structure B. a quote that uses a tagline to introduce it C. a quote isolated from the rest of the text starting a new sentence, sometimes called "quote vomit"

The diagram below represents two single-celled organisms. These organisms carry out the activities needed to maintain homeostasis by using specialized internal (1) tissues (3) systems (2) organelles (4) organs

Catabolic reactions always energy. A. release B. capture C. absorb D. use

Prokaryotes are the only organism known to science that has DNA. A. circular B. linear C. double helix configured D. single stranded

Acetic acid is responsible for the sour taste of vinegar. It can be manufactured using the following reaction: CH₂OH(g) C=0(g) Use tabulated values of bond energies from the table below to estimate ΔH for this reaction. Average Bond Energies

A definition paper should be organized with A. clear examples B. definitions in alphabetical order C. the author's point. of view and preference. for a specific definition

What cause and effect relationship do you see in the highlighted passage from Section 6? A. The effect of buying a good gift for Jim is Della crying. B. The effect of Della not having enough money to buy a good gift for Jim is that she started crying. C. The effect of Della crying is that she doesn't have enough money to buy a good gift for Jim.

Which of the following is the best order to answer your questions? A. Alphabetically B. The order given on the test C. Order based on point value

Athens was the birthplace of A. mathematics B. agriculture C. religion D. democracy

In binary fission, two [?] copies of DNA attach to opposite sides of the cell's [? ]. A similar B exact C alternate

Which of the following will prevent CREB phosphorylation? Low nuclear export of PKA. High activation of the catalytic subunits of PKA. High activation of a GTPase Activating Protein for Gs. Low expression of CBP.