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Unit 6 Infectious Agents
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Questions in this quiz (39)
1Which of the following best describes bacteria?
- Aone-celled organisms that occur alone or in chains
- Ba strand of hereditary material surrounded by a protein coating
- Can organism which lives inside its host and feeds off of it
2A student sets up a compost bin outdoors. Inside the bin, microorganisms convert the student's vegetable and paper scraps into rich fertilizer. Which of the following best describes the role that these microorganisms play in natural habitats?
- AThe microorganisms are bacteria which help balance the numbers of producers and consumers.
- BThe microorganisms are parasites which help keep nutrients cycling through the ecosystem through decomposition.
- CThe microorganisms are bacteria which help keep nutrients cycling through the ecosystem through decomposition.
- DThe microorganisms are viruses which function to convert solar energy into glucose.
3A photograph of a virus is shown below. The projections on the surface of the virus allow the virus to:
- Amove inside a host cell
- Battach to a host cell
- Ccontrol a host cell's DNA
- Dsignal other viruses to infect a host cell
4Cold sores are caused by herpes simplex type 1. A company that wants to develop antiviral drugs would need to research:
- Athe method used by the virus to infect host cells
- Bhow closely herpes simplex virus type 1 is related to cold viruses
- Cthe rate at which the virus can divide
- Dways the herpes simplex virus type 1 is transmitted among humans
5Fungi are not considered plants because they:
- Acannot produce their own food in the absence of chlorophyll
- Bhave roots & leaves and can produce their own food
- Care never green
- Ddo not produce flowers
6Fungi grow best in:
- Acold & wet environments
- Bdry & cold environments
- Cmoist and cold environments
- Dmoist and warm environments
7Most of the genetic material contained in a bacterial cell is in the:
- Anucleus
- Bribosomes
- Csingle chromosome in the cytoplasm
- Dendoplasmic reticulum
8The thick gelatin capsule along with the slime layer that encases a bacterial cell help it to:
- Areproduce
- Bfind a host cell
- Cbreak down decaying food
- Dstick to surfaces
9Which of the following is NOT a structural feature of bacteria?
- Amembrane-bound nucleus
- Bcytoplasm
- Ccell wall
- Dcell membrane
10Most bacteria obtain their food by:
- Aentering a host cell & destroying it
- Bbreaking down dead organisms and absorbing nutrients from their host
- Cusing chlorophyll to produce their own food
- Dfeeding on live organisms
11Strep Throat, Anthrax, and Tetanus are examples of disease-causing bacteria called:
- Apathogens
- Bfungi
- Cparasites
- Dsaprophytes
12A bacterial toxin found in food is called:
- Apathogen
- Bpenicillin
- Cantibiotic
- Dbotulism
13An active virus does which of the following?
- Ahelps the host cell replicate the DNA of the host cell
- Binvades the host cell without destroying it
- Ccombines its DNA with that of the host cell
- Dcauses the host cell to make viral cells and destroys the host cell in the process
14Some yogurt companies in the United States have started using probiotics in their yogurt products in order to promote digestive health. Probiotics are single-celled organisms that live in the intestines and aid in the reduction of gas, cramping, and diarrhea. Which microbe represents a probiotic?
- Abacteria
- Bparasite
- Cvirus
- Dfungi
15One of the benefits derived from bacteria which live in the digestive system is:
- Athey can harm the digestive systems without harming themselves
- Bthey have an unlimited supply of food
- Cthey can reproduce more easily
- Dthey can produce vitamin K which is necessary for blood clot formation
16Which of the following organelle(s) do viruses lack?
- Aa protein coating
- Bgenetic material
- Cnucleus and cell membrane
- Dnone of the above
17Which of the following is NOT a structural feature of bacteria?
- Amembrane-bound nucleus
- Bprotective coating like a cell wall
- Ccell membrane
- Dcytoplasm
18What organisms are responsible for creating holes in Swiss Cheese and giving yogurt its taste and texture?
- Aalgae
- Bbacteria
- Cprotists
- Dviruses
19Medicine, enzymes, and cleansers are made from manufactured ____.
- Abacteria
- Bviruses
- Calgae
- Dfungi
20Which of the following is NOT an internal parasite?
- Aringworms
- Bflatworms
- Ctapeworms
- Dheart worms
21One main difference between a bacteria and a virus is that:
- Abacteria are many-celled organisms and viruses have only one cell
- Bbacteria are living organisms while viruses are not
- Cviruses can be harmful and bacteria are only helpful
- Dbacteria can only function if they have a host cell to feed on, while viruses produce their own food
22How does a virus use a host cell to replicate itself?
- AThe virus attaches to the host cell and forces the host cell to replicate viral DNA.
- BIt goes through a form of sexual reproduction with the host cell.
- CIt goes through a form of asexual reproduction with the host cell.
- DThe host cell attaches to the virus so that it can reproduce the virus.
23Bioremediation is using microbes to clean up or remove toxins from the environment. Which description is an example of bioremediation?
- AWhen bacteria convert nitrogen gas into ammonia during the nitrogen cycle.
- BWhen bacteria are used to produce cheese and yogurt from milk.
- CWhen bacteria are used to remove jet fuel accidentally spilled in soil.
- DWhen bacteria are used to produce methane gas that generates electricity.
24Some bacteria assist in the production of ___, which limit the growth of bacteria.
- Ahyphae
- Bantibiotics
- Cparasites
- Dpathogens
25Schistosomiasis is a disease that occurs when eggs of small flatworms hatch inside the body. The worms can grow in many different tissues. How could schistosomiasis in the intestines interfere with normal body functions?
- ABy causing painful rashes and swelling on the skin
- BBy reducing the oxygen movement to cells in the body
- CBy keeping the body from absorbing nutrients from food
- DBy increasing the rate of cell metabolism in the body
26Using the table, which diseases would spread more rapidly in a densely populated area?
- Atuberculosis & strep throat
- Blyme disease & botulism
- Cbotulism, strep throat, and tetanus
- Dlyme disease, strep throat, & tuberculosis
27Hand sanitizers with antibacterial agents are marketed as a way to prevent the spread of disease through hand contact. Is this a perfect solution to the problem?
- ANo, the bacteria that survive the sanitizer reproduce to form additional resistant bacteria.
- BNo, the ethyl alcohol in some sanitizers is an excellent germ killer
- CYes, they are sold in small, portable containers to allow hand to be cleaned at any time.
- DYes, people using hand sanitizers have slower regrowth of bacteria.
28A certain virus causes people to catch colds and other infections more easily. Which body system does the virus affect?
- Acirculatory
- Bnervous
- Cimmune
- Ddigestive
29A cold sore is an example of a latent virus because:
- Aa latent virus cannot live very long in a host cell, so a cold sore only appears once
- Bthe viral DNA becomes a part of the cell, and the cold sore virus can become active again
- Ca latent virus does not produce cold sores
- Dthe virus can be destroyed completely, never to show up again
30Some bacteria are mixed with milk to make yogurt. These bacteria change the lactose in the milk into glucose, which then ferments into lactic acid. The lactic acid causes a protein in the milk to stick together, creating the gelatinous yogurt. The following graph shows the relative lactic acid production of different bacteria.
Which of these is a logical conclusion based on the data?
- ABacteria 1 & 2 combine to make the largest amount of lactic acid and would be most effective at making yogurt
- BBacterium 2 makes glucose but not lactic acid so it should not be used in making yogurt
- CBacteria 1 & 3 combine to be most effective at breaking down the glucose needed to make yogurt
- DBacterium 1 & 3 combine to be least effective at changing lactic acid into glucose and should not be used in making yogurt
31Scientists discovered that some bacteria can be used to clean up oil spills. The following graph shows the results of a study where the oil-cleaning abilities of two groups of bacteria were compared.
Which conclusion can be made from these data?
- AFertilizers decrease both the metabolic activity of the bacteria and the amount of oil that is cleaned up.
- BFertilizers increase both the metabolic activity of the bacteria and the amount of oil that is cleaned up.
- CFertilizers eliminate the bacteria and increase the absorption of oil.
- DFertilizers do not affect the bacteria or the amount of oil that is cleaned up.
32Sean is allergic to mold. Which of these describes how mold affects him?
- AHe touches mold that burrows into his skin, causing swelling a rash.
- BWind blows the mold into his eyes, causing blurry vision.
- CHe inhales mold spores that irritate respiratory tissue, causing him to sneeze.
- DHe eats food made from mold, causing an ulcer to develop in his stomach.
33An example of a viral infection is:
- Aringworm
- BAIDS/HIV
- CFood Poisoning
- DStrep Throat
34A student has the following symptoms of a cold: coughing, sneezing, headache, and sore throat. Which describes how the student contracted this cold?
- AShe inhaled a virus, which traveled to the respiratory tissue and interfered with normal breathing function.
- BShe touched an object covered with a bacterium, which penetrated her skin and traveled to her lungs through her blood system.
- CShe ate food with a fungus in it, which traveled to major organs in her body.
- DShe walked barefoot in soil containing a parasitic worm. The worm imbedded itself in her skin and sent toxin throughout her body.
35How do viruses move from place to place?
- AThey are airborne and are carried by wind so they are inhaled.
- BThey move through tube-like structures as they are reproducing.
- CThey move throughout structures called hyphae.
- DThey do not move; the host cells come to the virus.
36Study the table showing symptoms of four diseases affecting humans. Which statement about the diseases is true?
- AThey are caused by different bacteria.
- BThey are caused by viruses and fungi.
- CThey all affect the same body system.
- DThey are all caused by bacteria or viruses.
37Which of the following represents the relationship between a parasitic worm and its host?
- Aa human with a tapeworm in its digestive system
- Ba human who has contracted chicken pox
- Ca human who has contracted ringworm
- Da human with an upper respiratory infection
38H. pylori is a bacterium that damages the mucous coating in the lining of the stomach and duodenum. A study compared the presence of H. pylori with the incidence of stomach ulcers in humans. The table shows the results of six groups of people who participated in the study. What is the MOST logical conclusion that can be made?
- AH. pylori infection provides protection from stomach ulcers
- BH. pylori infection and stomach ulcers are unrelated
- CHumans tested for the presence of H. pylori will develop stomach ulcers
- DThe development of stomach ulcers in humans may be caused by H. pylori
39Probiotics are bacteria that provide health benefits to humans when consumed. A researcher is studying the use of probiotic therapy in treating patients with diarrhea. She observed that probiotic bacteria treatment shortens the duration of diarrhea in children. What can be inferred from the researcher's work?
- AProbiotic therapy helps the body to make nutrients
- BProbiotic therapy is a more effective treatment for children
- CProbiotic therapy will reduce the duration of diarrhea in adults
- DProbiotic therapy will reduce dependence on all antibiotic drugs
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- Quiz on Unit 6 Infectious Agents , created by Kimberly Mancuso on 09/01/2018.
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- Kimberly Mancuso
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