chapter 6 multiple choice questions

In an animal cell fractionation procedure, one of the last pellets from the series of centrifugations would most likely contain a. ribosomes b. peroxisomes c. mitochandria d. nuceli

a

Which of the following characteristics do the cristae of mitochondria, thylakoids, and microvilli share? a. have a large surface area of membrane that enhances their particular function b. are bounded by double membrane c. have a shape reinforced by microfilaments d. are not derived from the ER system

a

Which structure is common to plant and animal cells? a. chloroplasts b. central vacuole c. mitochandrion d. centriole

a

Which structure- function pair is mismatched? a. micortubule- muscle contraction b. ribosome- protein synthesis c. golgi- protein trafficking d. nucleolus- production of ribosomal subunits

a

the detailed structure of a chloroplast can be seen with the best resolution using a. transmission electron b. scanning electron c. phase contrast light d. deconvolution

a

The innermost portion of the cell wall of a plant cell specialized for support is the a. primary cell wall b. secondary cell wall c. middle lamella d. plasma membrane

b

Cyanide binds to at least one molecule involved in producing ATP, if a cell is exposed to cyanide, most of the cyanide will be found within the a. mitochondria b. ribosomes c. peroxisomes d. lysosomes

b

Microtubules are components of or associated with all of the following except a. centrioles b. amoeboid movement c. tracks along with organelles can move using motor proteins d. flagella and cilia

b

What is the most likely pathway taken by a newly synthesized protein that will be secreted by a cell? a. golgi-ER-lysosome b. nucleus-ER-golgi c. ER-golgi-vesicles that fuse with plasma membrane d. ER-lysosomes-vesicles that fuse with plasma membrane

b

Which of the following is present in a prokaryotic cell? a. mitochondrion b.ribosome c. nuclear envelope d. chloroplast

b

a fluorescent green tag is attached to a protein being synthesized into an area of rough ER membrane. Which of the following is a possible route for that protein to follow? a. rough er-- golgi-- lysosome-- nuclear membrane-- plasma membrane b. rough ER-- transport vesicle-- golgi-- vescicle-- plaza membrane-- food vacuole c. rough er- transport vesicle-- golgi-- smooth er-- plasma membrane d. rough er-- transport vesicle--golgi-- vesicle--extracellular matrix

b

proteins that function within the cytosol are generally synthesized a. by ribosomes bound to rough ER b. by free ribosomes c. by the nucleolus d. within mitochondria and chloroplasts

b

Which of the following is a major component of the plasma membrane of a plant cell? a. proteoglycans b. cellulose c. phospholipids d.pectins

c

Which of the following is/ are not found in a prokaryote cell? a. ribosomes b. plasma membrane c. mitochandria d. a and c

c

plant cell grows primarily by a. increasing the number of vacuoles b. synthesizing more cytoplasm c. taking up water into its central vacuole d. producing a secondary cell wall

c

plasmodesmata in plant cells are similiar in function to a. desnisines b. tght junctions c. gap junctions d. the extracellular matrix

c

which cell would be best for studying lysosomes? a. muscle cell b. nerve cell c. phagocytic white blood cell d. bacterial cell

c

Which of the following is incorrectly paired with its function? a. peroxisome- contains enzymes that break down h202 b. nucleolus- produces ribosomal RNA, assembles ribosome subunits c. golgi apparatus- processes, tags and ships cellular products d. lysosome- food sac formed by phagocytes

d

Which of the following is not a similarity among nuclei, chloroplasts and mitochondria? a. they contain DNA b. they are bounded by two or more phospholipid bilayer membranes c. they can divide to reproduce themselves d. they are associated with the endoplasmic reticulum systen

d

Which structure is not part of the endomembrane system? a. nuclear envelope b. chloroplasts c. golgi apparatus d. plasma membrane

d

the cells of an ant and an elephant are on average the same size, an elephant just has more cells. What is the main advantage of smaller cells? a. small cells are easier to organize into tissues and organs b. small cells have larger plasma membrane surface area than does a large cell, facilitating sufficient exchange of materials with its environment c. cytoskeleton of a large cell would have to be so large that the cells would be too heavy d. a small cell has a larger surface area relative to cytoplasmic volume, facilitating sufficient exchange to materials.

d

the pores in the nuclear envelope provide for the movement of a. proteins into nucleus b. ribosomal subunits out of the nucleus c. mRNA out of the nucleus d. all of the above

d

which of the following structure is/are involved in receiving external information and relaying it into a cell a. a primary cilium b. fibronectins c. integrins d. all of the above

d