|Which of the following are found primarily in the intestines of humans? ||Facultatively anaerobic gram-negative rods|
|Which of the following is a characteristic of Clostridium? ||Endospore-forming rod|
|Which of the following is not a characteristic of the regular, nonsporing gram-positive rods?
b Fermentative metabolism
c Don't produce endospores
e none of the above
|Which of the following is not a characteristic of Neisseria? ||Requires X and V factors|
|Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following? ||Growth in high salt concentrations
|Which of the following is not gram-negative? ||Streptococcus|
|Escherichia coli belongs to the? ||Proteobacteria.|
|Which one of the following does not belong with the others:
e Streptococcus ||b Escherichia|
|A primary difference between cyanobacteria and purple and green phototrophic bacteria is ||Electron donor for CO2 reduction. |
|You have isolated a prokaryotic cell. The first step in identification is a(n)
|How many phyla are represented in the following list of organisms:
Echinococcus, Cyclospora, Aspergillus, Taenia, Toxoplasma, Trichinella? ||3|
Put the above stages in order of development, beginning with the egg: ||4, 2, 5, 1, 3
If a snail is the first intermediate host of a parasite with these stages, which stage would be found in the snail? ||2
|Which of the following statements about yeasts are true?
(1) Yeasts are fungi.
(2) Yeasts can form pseudohyphae.
(3) Yeasts produce asexually by budding.
(4) Yeasts are facultatively anaerobic.
(5) All yeasts are pathogenic.
(6) All yeasts are dimor ||1, 2, 3, 4
|Which of the following events follows cell fusion in an ascomycete? ||Ascospore formation
|The definitive host for Plasmodium vivax is? ||anopheles|
|Fleas are the intermediate host for Dipylidium caninum tapeworm and dogs are the definitive host. Which stage of the parasite could be found in the flea? ||Cysticerus larva
|These are obligate intracellular parasites that lack mitochondria. ||microspora|
|These are nonmotile parasites with special organelles for penetrating host tissue. ||apicomplexa|
|These photosynthetic organisms can cause paralytic shellfish poisoning. ||dinoflagellates|
|All of the following statements about fungi are true except All fungi are unicellular.
All fungi have eukaryotic cells.
Fungi are heterotrophic.
Most fungi are aerobic.
Few fungi are pathogenic to humans
||All fungi are unicellular.
|All of the following statements about helminths are true except They are heterotrophic.
They are multicellular animals.
They have eukaryotic cells.
All are parasites.
Some have male and female reproductive organs in one animal.
||all are parasites|
|All of the following are true about protozoa except They have eukaryotic cells.
All make cysts.
They may reproduce sexually.
They may have flagella or cilia.
None of the above.
||all make cysts|
|Fungi, more often than bacteria, are responsible for decomposition of plant material because ||they can tolerate low-moisture conditions|
|which is statement is not true: A lichen doesn't exist if the fungal and algal partners are separate-Lichens are parasites-In a lichen, the alga produces carbohydrates-In a lichen, the fungus provides the holdfast-Lichens are important soil producers || Lichens are parasites.
|Which of the following pairs are mismatched?
1. Arthrospore 1 formed by fragmentation
2. Sporangiospore 1 formed within hyphae
3. Conidiospore 1 formed in a chain
4. Blastoconidium 1 formed from a bud
5. Chlamydospore 1 formed in a sac ||2 and 5|
|Which of the following pairs is mismatched?
Dinoflagellates - paralytic shellfish poisoning
Brown algae - algin
Red algae - agar
Diatoms - petroleum
Green algae - prokaryotic
||Green algae - prokaryotic
|Transmission of helminthic diseases to humans is usually by? ||gastrointestinal route|
|All of the following statements about algae are true except?
They use light as their energy source.
They use CO2 as their carbon source.
They produce oxygen from hydrolysis of water.
All are unicellular.
Some are capable of sexual reproduction.
||all are unicellular
|Which one of the following does not belong with the others?