Question 40 What is Schizogony? O Schizogony is seen in Ebola patients and triggers localized clotting O Schizogony is seen in Ebola patients and results in internal bleeding O Schizogony is seen in cases of malaria and is a process by which the nucleus divides multiple times but cell doesn't Schizogony is seen in cases of malaria and is a process by which the cell accumulates cytoplasm and proteins

Question 40 What is Schizogony? O Schizogony is seen in Ebola patients and triggers localized clotting O Schizogony is seen in Ebola patients and results in internal bleeding O Schizogony is seen in cases of malaria and is a process by which the nucleus divides multiple times but cell doesn't Schizogony is seen in cases of malaria and is a process by which the cell accumulates cytoplasm and proteins

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter20: Viruses, Bacteria, And Archaea

Section: Chapter Questions

Problem 1CT: If a cut or scrape becomes infected, Staphylococcus aureus is probably the culprit (right). These...

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1.Explain why John Snow is considered to be the father of modern epidemiology. Be sure to talk about the cholera outbreak in London and how he was able to determine how everyone was falling ill. 2.The bubonic plague is a disease caused by Yersinia pestis that infects your lymph nodes into dark-colored, swollen, and painful buboes, hence the name. The disease is transmitted via a flea bite and can be spread in an airborne fashion from person to person. Using Koch’s postulates, describe how it is known that this is caused by this organism. Remember to include each postulate in your own words and the describe what was done for this postulate specifically for the plague
Pimples and scalded skin syndrome are caused by____________________________ whereas scarlet fever and ery-sipelas are caused by ________________________ but pyodermaand impetigo could be caused by________.(a) Streptococcus, Staphylococcus aureus; neither(b) Pseudomonas aeruginosa; Streptococcus; both(c) Staphylococcus aureus; Streptococcus; both(d) Staphylococcus aureus; Pseudomonas; neither(e) None of the above
There have been recurring cases of mad-cow disease in the United Kingdom since the mid-1990s. Mad-cow disease is caused by a prion, an infectious particle that consists only of protein. In 1986, the media began reporting that cows all over England were dying from a mysterious disease. Initially, there was little interest in determining whether humans could be affected. For 10 years, the British government maintained that this unusual disease could not be transmitted to humans. However, in March 1996, the government did an about-face and announced that bovine spongiform encephalopathy (BSE), commonly known as mad-cow disease, can be transmitted to humans, where it is known as variant Creutzfeldt-Jakob disease (VCJD). As in cows, this disease eats away at the nervous system, destroying the brain and essentially turning it into a spongelike structure filled with holes. Victims experience dementia; confusion; loss of speech, sight, and hearing; convulsions; coma; and finally death. Prion diseases are always fatal, and there is no treatment. Precautionary measures taken in Britain to prevent this disease in humans may have begun too late. Many of the victims contracted it over a decade earlier, when the BSE epidemic began, and the incubation period is long (VCJD has an incubation period of 10 to 40 years). A recent study concluded that 1 in 2,000 people in Great Britain carry the abnormally folded protein that causes VCJD. In spite of these numbers, the death rate from VCJD remains low. It is not clear whether this means that the incubation period for the disease is much longer than previously thought, or whether they may never develop the disease. How can a prion replicate itself without genetic material?
The rubella virus causes German measles. If a pregnant woman is is infected by the rubella virus during the first trimester of her pregnancy, her child may be born deaf or blind. Infections later in pregnancy do not increase the risk of these effects. Explain why.
Which species does not cause human disease? a. Toxoplasma gondii b. Entamoeba histolytica c. Dictyostelium discoideum d. Trichomonas vaginalis
If a cut or scrape becomes infected, Staphylococcus aureus is probably the culprit (right). These bacteria often live on the skin and they can cause a problem if they get into a wound. Most staph infections can be cured with the antibiotic methicillin. Unfortunately, methicillin-resistant S. aureus (MRSA) is on the rise. Previously, antibiotic-resistant staph infections occurred mainly in hospitals and nursing homes. Now they are breaking out in schools and health clubs. The bacteria are transmitted by contact with an infected person or something that person has touched, as by sharing towels and razors. The gene conferring methicillin resistance is on a plasmid. Explain why a gene that is on a plasmid can spread more quickly than one on the bacterial chromosome.
Protozoan Infections A 9-year old boy, was brought to the ER due to fever and complains of a constant, dull ache on the right upper portion of his abdomen especially when lying on his right side. His father reported that 2 months ago, the patient and one of his younger brothers had abdominal pain and dysentery after swimming in the sea What is his present and 2 months ago condition?
Oh boy, it’s summer barbecue time and you have a nice big platter of succulent fresh chicken pieces to put on the grill. Did you know that many studies have shown a very large percentage (perhaps over half) of chickens carry Salmonella! Not to worry though, cooking will kill them easily. But what’s this? You’ve left the plate with raw chicken juices sitting next to the grill. Oops! Salmonella loves those warm, raw meat drippings. Oh no–you’re putting the cooked chicken back on the same plate! Well, those chicken pieces were sterile after cooking, but not anymore. Those pieces on the bottom ought to serve as a wonderful medium. Let’s say that 10,000 Salmonella cells latch onto a chicken leg, and its three hours before that leg is eaten. If these bacteria have a 20-minute generation time, how many Salmonella bacteria will you eat? A. 512,000 B. 512 C. 5,120,000 D. 52,100,000
(>1 ans) Which of the following bacteria can cause beta-hemolysis? group A streptococci S. pyogenes group B streptococci S. aureus pneumococci
1.Explain how Toxoplasma gondii is the most successful parasite in the world. Explain the roles of definite and intermediate hosts, including the roles of cats and undercooked meat. Be sure to include trophozoites, encystment and excystment. 2.Why was the discovery of reverse transcriptase a momentous event in biology? Be sure to explain what the protein does and how this is different to the central dogma of biology. What major disease uses this enzyme to cause infection and how does it contribute to the organism's virulence?
8. Botulinum toxin: a. causes a flaccid paralysis b. is an endotoxin c. inhibits cysteine d. is produced by Clostridium perfringens e. all answers
Before development of a vaccine against this microbe, thedisease it caused accounted for two-thirds of bacterial meningi-tis cases during the first year of life but is still the number oneleading cause of mental retardation in patients who survive seri-ous disease due to permanent central nervous system disorders.What is the microorganism?(a) Haemophilus influenzae type B(b) Haemophilus influenzae type A(c) Neisseria meningitidis(d) Streptococcus pneumoniae(e) Listeria monocytogenes