Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
Which type of microbial cell divides by budding?
A. Bacteria
Bacteria: Most bacteria reproduce by binary fission, where the cell divides evenly into two identical daughter cells. Budding is not a typical method of bacterial reproduction.
B. Algae
Algae: Algae generally reproduce through binary fission, fragmentation, or sexual reproduction, but budding is not their main reproductive mechanism.
C. Yeast
Yeast: Yeast, a type of fungus, often reproduce by budding, where a small outgrowth develops on the parent cell, enlarges, and eventually separates as a new individual cell.
D. Protozoa
Protozoa: Protozoa usually reproduce by binary fission or multiple fission, with some species reproducing sexually, but they do not reproduce by budding.
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Full Explanation
A. Bacteria: Most bacteria reproduce by binary fission, where the cell divides evenly into two identical daughter cells. Budding is not a typical method of bacterial reproduction.
B. Algae: Algae generally reproduce through binary fission, fragmentation, or sexual reproduction, but budding is not their main reproductive mechanism.
C. Yeast: Yeast, a type of fungus, often reproduce by budding, where a small outgrowth develops on the parent cell, enlarges, and eventually separates as a new individual cell.
D. Protozoa: Protozoa usually reproduce by binary fission or multiple fission, with some species reproducing sexually, but they do not reproduce by budding.
Similar Questions
Eating undercooked meat can lead to food-borne disease via helminthic infection. What is the common host for Taenia saginata?
A. fish
fish: Fish are a source of other parasitic infections such as Diphyllobothrium latum (fish tapeworm), but they are not the intermediate host for Taenia saginata.
B. ducks
ducks: Ducks may carry parasites and bacteria transmissible to humans, but they are not associated with transmission of Taenia saginata.
C. pigs
pigs: Pigs serve as the intermediate host for Taenia solium (pork tapeworm), not Taenia saginata.
D. cows
cows: Cattle are the intermediate host for Taenia saginata (beef tapeworm). Humans acquire the infection by consuming undercooked or raw beef containing larval cysts.
E. chickens
Chickens can transmit other pathogens such as Salmonella, but they are not involved in the life cycle of Taenia saginata.
Full Explanation
A. fish: Fish are a source of other parasitic infections such as Diphyllobothrium latum (fish tapeworm), but they are not the intermediate host for Taenia saginata.
B. ducks: Ducks may carry parasites and bacteria transmissible to humans, but they are not associated with transmission of Taenia saginata.
C. pigs: Pigs serve as the intermediate host for Taenia solium (pork tapeworm), not Taenia saginata.
D. cows: Cattle are the intermediate host for Taenia saginata (beef tapeworm). Humans acquire the infection by consuming undercooked or raw beef containing larval cysts.
E. chickens: Chickens can transmit other pathogens such as Salmonella, but they are not involved in the life cycle of Taenia saginata.
Pinworm is a disease caused by species.
A. Escherichia
Escherichia: This bacterial genus includes Escherichia coli, a common cause of urinary tract infections and gastrointestinal illness, but it does not cause pinworm disease.
B. Enterococcus
Enterococcus: These bacteria are part of the normal gut flora and may cause opportunistic infections, but they are not responsible for pinworm infestation.
C. Enterobius
Enterobius: Enterobius vermicularis is the causative agent of pinworm infection, a helminthic disease spread via the fecal–oral route and characterized by perianal itching, especially at night.
D. Entamoeba
Entamoeba: Entamoeba histolytica is a protozoan parasite that causes amoebiasis and dysentery, but it is unrelated to pinworm disease.
Full Explanation
A. Escherichia: This bacterial genus includes Escherichia coli, a common cause of urinary tract infections and gastrointestinal illness, but it does not cause pinworm disease.
B. Enterococcus: These bacteria are part of the normal gut flora and may cause opportunistic infections, but they are not responsible for pinworm infestation.
C. Enterobius: Enterobius vermicularis is the causative agent of pinworm infection, a helminthic disease spread via the fecal–oral route and characterized by perianal itching, especially at night.
D. Entamoeba: Entamoeba histolytica is a protozoan parasite that causes amoebiasis and dysentery, but it is unrelated to pinworm disease.
Adulthood and mating of helminths occur in which host?
A. Intermediate host
Intermediate host: The intermediate host harbors the larval or asexual stage of a parasite but does not support adult development or mating of helminths.
B. Secondary host
Secondary host: This term is sometimes used interchangeably with intermediate host, meaning it also supports only immature stages of the parasite rather than adulthood and reproduction.
C. Definitive host
Definitive host: The definitive host is where helminths reach maturity and undergo sexual reproduction. Adulthood and mating occur here.
D. Transport host
Transport host: A transport (paratenic) host temporarily harbors the parasite without further development, serving mainly to pass it to another host.
E. Mating takes place in all hosts.
Only the definitive host provides the environment for sexual reproduction and full maturity of helminths.
Full Explanation
A. Intermediate host: The intermediate host harbors the larval or asexual stage of a parasite but does not support adult development or mating of helminths.
B. Secondary host: This term is sometimes used interchangeably with intermediate host, meaning it also supports only immature stages of the parasite rather than adulthood and reproduction.
C. Definitive host: The definitive host is where helminths reach maturity and undergo sexual reproduction. Adulthood and mating occur here.
D. Transport host: A transport (paratenic) host temporarily harbors the parasite without further development, serving mainly to pass it to another host.
E. Mating takes place in all hosts: Only the definitive host provides the environment for sexual reproduction and full maturity of helminths.