Chapter 6

Bacteria are best described as (a) eukaryotic cells (c) prokaryotic cells (b) photosynthetic cells (d) filamentous cells

The prokaryotes are cells that lack .. 1.. organelles. ( 2 words)

A chain of cells is known as (a) filament (c) chord (b) mass (d) convolution

The DNA of prokaryotes is structured into (a) scattered chromatin granules (c) several nucleoids (b) histone chains (d) a single chromosome

Muramic acid is isolated from the bacterial structure known as (a) mesosome (c) cell wall (b) cell membrane (d) chromosome

Mycoplasmas, unlike other prokaryotic cells, do not have a _.4.. ( 2 words)

The function of the ribosomes is to (a) synthesize cell walls (b) carry hereditary traits (c) direct replication of the mesosome (d) translate mRNA into protein

Prokaryotic cells contain (a) DNA only (c) both DNA and RNA (b) RNA only (d) no nucleic acids

The only cellular organelle in bacteria is the ..6..

An incorrect statement concerning bacteria is that they (a) build ATP molecules (b) lack multienzyme systems (c) lack Golgi bodies (d) assemble proteins

Survival of the cubacteria is increased by the ability to (a) replicate DNA (c) generate cells walls (b) synthesize proteins (d) form endospores

Encapsulated bacteria resist (a) reproduction (c) phagocytosis (b) endospore formation (d) DNA replication

A group of interbreeding organisms is called a ..9..

Nitrifying bacteria (a) convert ammonia into nitrates (b) convert ammonia into nitrogen gas (c) release ammonia from decaying bodies (d) synthesize legumes

The bacteria that live as parasites in the cells of ticks and mites are (a) spirochetes (c) mycoplasmas (b) actinomycetes (d) rickettsiae

Tunicates are (a) blue-green algae (c) a type of virus (b) fruiting bodies (d) marine invertebrates

Bacteriorhodopsin is correctly associated with the (a) chlorophyta (c) halophiles (b) prochlorons (d) viroids

Nitrobacter are examples of .. 14.. bacteria.

Capsomeres are subunits of (a) bacteria cell walls (c) clover nodules (b) viral coats (d) slime mold

Bacteria that require molecular oxygen for respiration are known as ..15..

Thermophiles live best (a) on the bottom of bogs (c) in salt pools (b) in hot springs (d) in stagnant marshes

Bacteria that are indifferent to oxygen are called ..16..

Lysozyme is a (an) (a) human sccretion (c) enzyme (b) small vacuole (d) hydrogen carrier molecule

Fruiting bodies are best associated with (a) spirochetes (c) Prochlorophyta (b) Eubacteria (d) Myxobacteria

The organism that causes syphilis is a (a) spirochcte (c) prochlorophyte (b) cubacterium (d) myxobacterium

Rickettsiae are best classified as (a) molds (c) fungi (b) bacteria (d) protists

Plasmadesmata are (a) shrinking cell walls (b) oversized vacuoles (c) cytoplasmic bridges between cells (d) several attached cell membranes

Heterocysts are most closely associated with (a) nitrogen fixation (c) water storage (b) cell protcction (d) binary fission

Actinomyeetes are a type of (a) virus (c) fungus (b) rock (d) bacterium

The protein coat of a virus is known as a (a) desmid (c) capsid (b) plastid (d) capsule

A virus (a) can reproduce itself independently (b) can reproduce only within living cells (c) does not contain either DNA or RNA (d) can be considered a type of cell