biology-review-cells

human cells have a size range between ___ and ___ micrometers. a) 10-100 b) 1-10 c) 100-1000 d) 1/10-1/1000

a) 10-100

the thin extension of the inner mitochondrial membrane are known as ___, a) cristae b) matrix c) thylakoids d) stroma

a) cristae

the major components of the cytoskeleton are ___. (choose all that are correct) a) microtubules b) microfilaments c) microblasts d) intermediate filaments

a) microtubules & b) microfilaments & d) intermediate filaments

functional red blood cells (rbc's), in humans and other animals, lack which of the following cell organells? a) nucleus b) ribosomes c) mitochondria d) rough ER

a) nucleus & d) rough ER

the process in plant cells where the plasma membrane pulls away from the cell wall, due to the loss of water through osmosis, is called ___. a) plasmolysis b) passive transport c) active transport d) hemolysis

a) plasmolysis

the components of ribosomes consist of ___. (choose multiple answers if appropriate) a) protein b) carbohydrates c) rna d) glycoproteins

a) protein & c) rna

chloroplasts and bacteria are ___ in size. a) similar b) at different ends of the size range c) exactly the same d) none of these

a) similar

you are observing cells under the light microscope and note the following features: these unicells have cell walls, internal membrane-bound structures, and chloropasts. what type of cell is being observed? a) plant cell b) algal cell c) fungal cell d) bacterial cell

b) algal cell

which of the following is an example of an integral, transmembrane protein? a) a recognition protein on a cell's surface membrane b) an ion channel c) elastin and collagen d) insulin and glucagon

b) an ion channel

cell walls are found in members of all of these kingdoms except ___. a) plants b) animals c) bacteria d) fungi

b) animals

if a cell lacks mitochondria, but has a cell wall, it is a ___. a) protozoan b) bacteria c) fungal cell d) plant cell

b) bacteria

the theory of ___ was proposed to explain the possible origin of chloroplasts and mitochondria. a) evolution b) enosymbiosis c) endocytosis d) cells

b) enosymbiosis

long, whip-like, membrane-bound extentions that facilitate movement by cells are known as ___. a) cilia b) flagella c) glycoproteins d) pseudopodia

b) flagella

the cell walls of bacteria are composed primarily of ___. a) chitin b) peptidoglycan c) cellulose d) amylose e) phospholipid

b) peptidoglycan

the cell fragments that play a role in the formation of blood clots are called ___. a) rbc's b) platelets c) erythroblasts d) nucleoids

b) platelets

where would bound ribosomes be found in the cell? a) smooth ER b) rough ER c) cytoplasm d) nuclear envelope

b) rough ER

if a cell lacks cell walls and chloroplasts, but has mitochondria and nuclei, it is a ___. a) fungal cell b) bacteria c) animal cell d) plant cell

c) animal cell

the polysaccharide ___ is a major component of plant cell walls. a) chitin b) peptidoglycan c) cellulose d) amylose

c) cellulose

where would free ribosomes be found in the cell? a) smooth ER b) rough ER c) cytoplasm d) nuclear envelope

c) cytoplasm

the network of protein fibers, called microfilaments and microtubules, that provides mechanical support to the eukaryotic cell and maintains its shape is called the ___. a) cell wall b) cell membrane c) cytoskeleton d) capsule

c) cytoskeleton

if a cell has a cell wall, mitochondria and nuclei, but does not have chloroplasts, it is a ___. a) protist b) bacteria c) fungal cell d) plant cell

c) fungal cell

you are observing cells under the light microscope and note the following features: the cells have a cell wall, internal membrane-bound structures, but no chloroplasts or plastids. what type of cell is being observed? a) plant cell b) algal cell c) fungal cell d) bacterial cell

c) fungal cell

the smooth ER is the area in a cell where ___ are synthesized. a) nucleic acids b) proteins c) lipids d) export proteins

c) lipids

which organells are NOT considered to be components of the endomembrane system? a) nucleus and ER b) ER and golgi body c) mitochondria and chlorplasts d) lysosomes, vesicles, and vacuoles

c) mitochondria and chlorplasts

the components of ribosomes are synthesized in the ___. a) endoplasmic reticulum (ER) b) nucleoid c) nucleolus d) nuclear pore

c) nucleolus

intracellular digestion of captured particles or cellular debris, in plants, is the primary responsibility of ___. a) ribosomes b) golgi bodies c) peroxisomes d) lysosomes

c) peroxisomes

the chloroplast functions in ___. a) lipid storage b) protein synthesis c) photosynthesis d) dna replication e) atp synthesis

c) photosynthesis

the internal membranes of chloroplasts are known as ___. a) cristae b) matrix c) thylakoids d) stroma

c) thylakoids

there are ___ micrometers in one millimeter (mm). a) 1 b) 10 c) 100 d) 1000 e) 1/1,000

d) 1000

which of these cellular organelles contain dna? a) chloroplast b) nucleus c) mitochondrion d) all of these

d) all of these

you are observing cells under the light microscope and note the following features: these unicells have flagella, cell walls, but lack any visible internal membrane-bound structures. what type of cell is being observed? a) plant cell b) algal cell c) fungal cell d) bacterial cell

d) bacterial cell

plant cells have ___ and ___ , which are not present in animal cells. a) mitochondria, chloroplasts b) cell membranes, cell walls c) chloroplasts, nucleus d) chloroplasts, cell walls

d) chloroplasts, cell walls

the plasma membrane of eukaryotes performs all of these functions except ___. a) functions in the recognition of self b) acts as a boundary or border for the cytoplasm c) regulates passage of material in and out of the cell d) contains the heredity material

d) contains the heredity material

which of these materials is not a major component of the plasma membrane? a) phospholipids b) glycoproteins c) proteins d) dna

d) dna

the bacterial capsule is composed of ___. a) peptidoglycan b) chitin c) cellulose d) exopolysaccharide e) phospholipid

d) exopolysaccharide

the rough ER is the area in a cell where ___ are synthesized. a) polysaccharides b) cytoplasmic proteins c) lipids d) export proteins

d) export proteins

the removal of cell debris, such as damaged organelles, and the breakdown of captured particles, like bacteria, is accomplished by the action of ___. a) cristae b) golgi bodies c) smooth ER d) lysosomes

d) lysosomes

the flagella of a eukaryotic cell consists of ___. a) membrane-bound, whip-like flagellan protein b) membrane-bound glycoproteins c) membrane-bound filaments d) membrane-bound microtubule doublets

d) membrane-bound microtubule doublets

the ___ is the membrane enclosed structure in eukaryotic cells that contains the dna of the cell. a) mitochondrion b) chloroplasts c) nucleolus d) nucleus

d) nucleus

the process described in question #19, the ingulfing and digestion of captured particles is called ___. a) endocytosis b) exocytosis c) pinocytosis d) phagocytosis

d) phagocytosis

the mitochondrion functions in ___. a) lipid storage b) protein synthesis c) photosynthesis d) dna replication e) atp synthesis

e) atp synthesis

the smooth ER is the site of ___. a) detoxification of toxic byproducts of metabolism b) synthesis of lipids and steroids c) assembly of carbohydrates d) regulation of calcium concentration e) detoxification of exogenous toxins f) attachment of receptors to cell membrane proteins g) all of these are functions of the smooth ER

g) all of these are functions of the smooth ER.