Quiz 3
a. 6
How many electrons will a single atom of sulfur with no charge and no bonds have in its valence shell? a. 6 b. 8 c. 16 d. 32 e. 64
Cellulose
Plant cell walls are made of the polysaccharide __________________
Mitochondria, chloroplasts
The endosymbiotic theory of evolution states that heterotrophic bacteria involved into _______________ while phototrophic bacteria evolved into ______________________
C. Motor proteins that move along microtubules
The movement of a transport vesicle within the cell is carried out by a. RNA polymerase during transcription b. Ribosomes during translation c. Motor proteins that move along microtubules d. tight junctions in between cells e. the nuclear pore complex
c. Plasmodesmata
This structure in plant cells allows for the movement of small molecules between cells and cell: cell communication a. Central vacuole b. Thylakoid c. Plasmodesmata d. Fimbriae e. Chloroplast
B. It is the site where lipids are synthesized
What role does the smooth endoplasmic reticulum play in cells? a. It is the storage site for DNA b. It is the site where lipids are synthesized c. It modifies proteins for export outside of the cell d. It synthesizes ribosomes e. None of the above
C. Whether or not the cell has membrane bound organelles
Which of the following clues would tell you whether a cell is prokaryotic or eukaryotic? a. whether or not the cell has DNA b. the presence of a rigid cell wall c. whether or not the cell has membrane bound organelles d. the presence or absence of ribosomes e. the presence of a cell membrane
e. Central vacuole... photosynthesis
Which of the following incorrectly matches an organelle with its function? a. Mitochondria... ATP production b. Nucleolus... production of ribosomes c. Ribosome... synthesis of proteins d. Rough ER... synthesis/modification of proteins e. Central vacuole... photosynthesis
c. Mitochondria
Which of the following is not considered part of the endomembrane system? a. vesicles b. rough ER c. mitochondria d. smooth ER e. golgi
