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WorksheetsMIC461 Chapter 6
Total questions: 20
Worksheet time: 6mins
Archaea are very similar to bacteria except their cell wall is made up of cellulose.
True
False
tRNAs of archae are different from other living organisms. They are more ___________-like,
virus
bacteria
eukaryotic
human
Membrane-bound organelles are absent in archaea.
True
False
Archaea lacks flagella
True
False
Some of the main differences of membrane components of archaea in comparison to bacteria and all other living things include....
Isoprenoid chains instead of fatty acid
Branching of the fatty acid chains
Ether linkage between glycerol and the isoprenoid chain
Chirality of glycerol in the phospholipids structure
Fatty acid chain instead of isoprenoid
A resistant DNA polymerase enzyme, Pfu, that works best at 100 oC is used for PCR and is isolated from the organism ____________.
T4 Bacteriophage
Pyrococcus furiosus
Thermus aquaticus
Sacchromyces cerevisiae
The following are TRUE about dinoflagellates except...
They have two flagellum, one at the tail and one surrounding the cell in a groove
Some dinoflagellates are bioluminescence.
Some of them can't produce their own food.
All dinoflagellates are harmless
Diatoms have cell walls surrounded by loosely attached ________________ and _______________.
silicon dioxide, potassium carbonate
silicon, calcium carbonate
silicon dioxide, calcium chloride
silicon, sodium carbonate
The sexual structure of club fungi is called....
basidia
ascus
mycelia
septa
Which class of fungi have complex mycelia with hyphae lacking septa.
Club fungi
Sac fungi
Ascomycota
Bread molds
Protozoa are plant-like protists.
True
False
A class of protozoa is called apicomplexans because their cells are surrounded by cilia.
True
False
Which class of protozoa that moves around by means of a pseudopodia
Mastigophorans
Ciliates
Amebozoa
Apicomplexan
Flukes can be categorized into ____________ and ____________ flukes
tissue, lymphatic
flat, round
organ, serum
tissue, blood
Most roundworms are transmitted by ingestion but _________________ can penetrate through skin layers
pinworms
hookworms
tapeworms
flukes
Viruses are infectious agents that are NOT cell.
True
False
Viruses replicate only inside living host cells and as such they are called....
obligate intracellular saprophytes
facultative intracellular parasites
obligate extracellular parasites
obligate intracellular parasites
Below are the components of a virus except..
nucleic acid core
cell wall
envelope
capsid
A complete virus particle, including its envelope, if it has one, is called a ________.
centurion
viridae
virion
viriae
A phase in the replication stage of viruses, whereby no new virions are produced, is called
lytic cycle
lysogenetic cycle
lysogenic cycle
lytigic cycle
