BIO 264 EXAMS 2 ALL QUESTIONS AND ANSWERS
SURE A+
X
✔✔10. The inner membranes of mitochondria are the site of ______.
a. proteins involved in the electron transport chain
b. intracellular digestion
c. enzymes involved in the citric acid (Krebs) cycle
d. endocytosis
e. phagocytosis - ✔✔a
✔✔11. A ___________ is an impermeable junction that prevents molecules from
passing through the intercellular space.
a. Tight junction
b. Gap junction
c. Desmosome - ✔✔a
✔✔12. ______________ support the plasma membrane.
a. Intermediate filaments
b. Actin filaments
c. Microtubules - ✔✔b
✔✔13. ________ of cells will move mucus within the respiratory tract.
a. Microvilli
b. Flagella
c. Cilia - ✔✔c
✔✔14. The nucleolus ________.
a. is the primary site of nucleotide synthesis
b. is the primary site of lipid synthesis
c. is the site of protein assembly in a cell
d. is the site of rRNA production in a cell - ✔✔d
, ✔✔15. Which cell projections will greatly increase the surface area of cells to increase
absorption?
a. stereocilia
b. microvilli
c. cilia
d. flagella - ✔✔b
✔✔16. A ________________ forms a channel from the cytoplasm of one cell to the
cytoplasm of another cell and will allow substances to pass directly from cell to cell
without entering the extracellular space.
a. Desmosome
b. Tight junction
c. Gap junction - ✔✔c
✔✔17. The _____________ is specialized in skeletal muscle cells to store calcium ions.
a. rough ER
b. both the smooth and rough ER
c. cytoplasm
d. smooth ER
e. Golgi apparatus - ✔✔d
✔✔18. Long cell processes, such as the axons of neurons, are supported by ________.
a. Actin filaments
b. Intermediate filaments
c. Microtubules - ✔✔b
✔✔19. Which organelle is responsible for synthesizing proteins?
a. Golgi apparatus
b. smooth endoplasmic reticulum
c. mitochondria
d. ribosomes - ✔✔d
✔✔20. Ribosomes attached to the __________ will synthesize proteins that can be
secreted from the cell.
a. Centrosomes
b. Mitochondria
c. Golgi apparatus
d. Nucleus
e. Endoplasmic reticulum - ✔✔e
✔✔21. Osmosis is the movement of water from ___________.
a. An area of low solute concentration to an area of high solute concentration
b. An area of high solute concentration to an area of low solute concentration - ✔✔a
SURE A+
X
✔✔10. The inner membranes of mitochondria are the site of ______.
a. proteins involved in the electron transport chain
b. intracellular digestion
c. enzymes involved in the citric acid (Krebs) cycle
d. endocytosis
e. phagocytosis - ✔✔a
✔✔11. A ___________ is an impermeable junction that prevents molecules from
passing through the intercellular space.
a. Tight junction
b. Gap junction
c. Desmosome - ✔✔a
✔✔12. ______________ support the plasma membrane.
a. Intermediate filaments
b. Actin filaments
c. Microtubules - ✔✔b
✔✔13. ________ of cells will move mucus within the respiratory tract.
a. Microvilli
b. Flagella
c. Cilia - ✔✔c
✔✔14. The nucleolus ________.
a. is the primary site of nucleotide synthesis
b. is the primary site of lipid synthesis
c. is the site of protein assembly in a cell
d. is the site of rRNA production in a cell - ✔✔d
, ✔✔15. Which cell projections will greatly increase the surface area of cells to increase
absorption?
a. stereocilia
b. microvilli
c. cilia
d. flagella - ✔✔b
✔✔16. A ________________ forms a channel from the cytoplasm of one cell to the
cytoplasm of another cell and will allow substances to pass directly from cell to cell
without entering the extracellular space.
a. Desmosome
b. Tight junction
c. Gap junction - ✔✔c
✔✔17. The _____________ is specialized in skeletal muscle cells to store calcium ions.
a. rough ER
b. both the smooth and rough ER
c. cytoplasm
d. smooth ER
e. Golgi apparatus - ✔✔d
✔✔18. Long cell processes, such as the axons of neurons, are supported by ________.
a. Actin filaments
b. Intermediate filaments
c. Microtubules - ✔✔b
✔✔19. Which organelle is responsible for synthesizing proteins?
a. Golgi apparatus
b. smooth endoplasmic reticulum
c. mitochondria
d. ribosomes - ✔✔d
✔✔20. Ribosomes attached to the __________ will synthesize proteins that can be
secreted from the cell.
a. Centrosomes
b. Mitochondria
c. Golgi apparatus
d. Nucleus
e. Endoplasmic reticulum - ✔✔e
✔✔21. Osmosis is the movement of water from ___________.
a. An area of low solute concentration to an area of high solute concentration
b. An area of high solute concentration to an area of low solute concentration - ✔✔a
