BIOL 320- ch 4

when the size of a cell increases, the surface are/volume ratio

decreases

intermediate filaments are

different in different cell types

which of the following fundamental properties of life do viruses posses?

evolutionary adaptation

communication between adjacent animal cells is facilitated by

gap junctions

which of the following processes would be most likely to occur in the golgi complex?

glycosylation of proteins

a protein is destined to be secreted from a cell. in which organelle would you expect to find the protein just after it is produced in the rough endoplasmic reticulum?

golgi apparatus

if the surface area of a cell increases by a factor of 100, the volume of that cell will

increase by a factor of 1000

a(n) ______ is composed of tetrameric protofilaments

intermediate filament

which of the following diseases is caused by a peroxisomal defect?

Zellweger syndrome

lignin is an important component in

pant cell walls

which organelle has only a single membrane around it

peroxisome

glyoxysomes play an important role in the germination of fat-storing seeds and are considered to be specialized ______

peroxisomes

the size range of most plant and animal cells is

10-50 μm

prokaryotes have ______S ribosomes with ______S and ______S subunits, whereas eukaryotes have ______S ribosomes with ______S and ______S subunits

70, 50,30; 80,60,40

which of the following is included as part of the Eubacteria?

cyanobacteria

the term "junk DNA" is no longer used because these regions of DNA have been found to be associated with all of the following except

a) all of these b) binding sites for regulatory regions c) speciation d) none of these e) miRNAs all of these have been associated with "junk DNA"

which of the following would be attributed to a peroxisomal dysfunction?

accumulation of very long chain fatty acids

the methanobacteria, halobacteria, and sulfobacteria are included in which domain?

archaea

which of the following organelles is not generally found in animal cells?

central vacuole

which of the following is not true of a viroid?

its capsid is quite small

the smooth endoplasmic reticulum functions in synthesis of

lipids

which of the following diseases is caused by a prion?

mad cow disease

which of the following is not generally associated with a chloroplast?

matrix

which of the following is a eukaryotic characteristic?

membrane-bound nucleus

the major structural elements of the cytoskeleton are

microtubules, microfilaments, and intermediate filaments

which of the following is true of plant cells?

plant cells may contain chloroplasts

the chromoplast is an organelle associated with

plant pigment storage

Kuru is degenerative disease of the central nervous system believed to be cause by which type of agent?

prion

which of the following is least likely to be part of a cell membrane

proteoglycans

membrane proteins may function in

receiving extracellular signals

which of the following organelles is not part of the endomembrane system?

ribosome

which sequence reflects the locations that a secretory protein will visit on its way from its production to its secretion outside the cell?

rough ER, ER vesicle, Golgi complex, secretory vesicle

which of the following is not believed to be a virus or to be caused by a virus?

scrapie

the cytosol is best described as the

semifluid substance in which organelles are suspended

which of the following is true of a lysosome?

the lysosome may mature from a late endosome

with regard to tight junctions

they block the movement of basolateral integral membrane proteins to the apical surface

in which of the following properties are the Archaea more like eukaryotes than the bacteria?

translation initiation

mitochondrial DNA is/are

used to trace dispersal of modern humans

the hallmark feature of peroxisomal diseases is the presence of

very long chain fatty acids

viroids are characterized by all of the following except

well-characterized transmission