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BIO 446L - Final Exam Test Bank Questions and Correct Answers
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A cell that is actively synthesizing proteins or is located with a rapidly growing tumor is characterized by a large a)Actin microfiber b) Nuclear pore c) Nucleolus d) Smooth ER c) Nucleolus Concentrations of integral and peripheral proteins that function in large enzyme complexes are located in t...

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  • 17 augustus 2024
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  • bio 446l final exam test bank questions and corr
  • a cell that is actively synthesizing proteins or i
  • concentrations of integral and peripheral proteins

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BIO 446L - Final Exam Test Bank
Questions and Correct Answers
A cell that is actively synthesizing proteins or is located with a rapidly growing tumor is
characterized by a large
a)Actin microfiber
b) Nuclear pore
c) Nucleolus
d) Smooth ER ✅c) Nucleolus

Concentrations of integral and peripheral proteins that function in large enzyme
complexes are located in the:
a) Golgi apparatus
b) Lipid rafts
c) Nucleolus
d) Rough endoplasmic reticulum ✅b) Lipid rafts

Which of the following organelles of the cell initiates packing, concentration and storage
of secretory products by secretory vesicles?
a) Golgi apparatus
b) Mitochondria
c) Rough endoplasmic reticulum
d) Smooth endoplasmic reticulum ✅a) Golgi apparatus

The mechanism by which a ligand attaches to an integral protein to trigger an action of
the cell is called:
a) Exocytosis
b) Phagocytosis
c) Pinocytosis
d) Receptor mediated endocytosis ✅d) Receptor mediated endocytosis

Which of the following cellular structures is an intermediate filament?
a) Actin
b) Glycoprotein
c) Microtubules
d) Vimentin ✅d) Vimentin

The microfilaments that form a framework within a microvillus is formed by
a) Actin
b) Keratins
c) Lamins
d) Vimentin ✅a) Actin

,The mechanism by which a bacterium is brought into a cell is called
a) Exocytosis
b) Phagocytosis
c) Pinocytosis
d) Receptor mediated endocytosis ✅b) Phagocytosis

Which organelle of the cell would be present in large numbers in cells requiring large
amounts of energy?
a) Endoplasmic reticulum
b) Golgi apparatus
c) Lysosome
d) Mitochondria ✅d) Mitochondria

All the following structures can be located within the plasmalemma of a cell EXCEPT
ONE. The EXCEPTION is:
a) Cholesterol
b) Cytosol
c) Integral proteins
d) Lipid rafts ✅b) Cytosol

Which of the following types of epithelia has cells that are flat on the surface but
cuboidal in the basal layer?
a) Pseudostratified columnar
b) Stratified cuboidal
c) Stratified squamous ✅c) Stratified squamous

The basal lamina is composed of glycoproteins (laminin and entactin) and
a) Type I collagen
b) Type II collagen
c) Type III collagen
d) Type IV collagen ✅d) Type IV collagen

Which of the following types of epithelium secrete tears?
a) Simple cuboidal
b) Simple squamous
c) Stratified columnar
d) Stratified squamous ✅a) Simple cuboidal

A free surface specialization only found on hair cells of the inner ear and in epididymis
of male reproductive system is:
a) Cilia
b) Microvilli
c) Stereocilia ✅c) Stereocilia

,Which of the following types of epithelia allows active and passive movement of
substances (eg. gases) through tissue?
a) Pseudostratified columnar
b) Simple columnar
c) Simple squamous
d) Stratified cuboidal
e) Stratified squamous ✅c) Simple squamous

The intercellular connection or junction that binds an epithelial cell to the basal lamina is
termed
Anchoring junction
Desmosome
Hemidesmosome
Tight junction ✅Hemidesmosome

The cells that line the acinar portion of a gland are most likely to be classified as:
Cuboidal epithelial
Fibroblasts
Masts
Squamous epithelial ✅Cuboidal epithelial

Connexons are a part of what type of intercellular junctions?
Desmosome
Gap
Hemidesmosome
Zonula adherens ✅Gap

The unicellular merocrine glands typically produce what type of secretion?
Mucous
Serous ✅Mucous

A gland with a long duct most likely would produce what type of secretion?
Mucous
Serous ✅Serous

A free surface specialization that moves mucous in the trachea is the
Basal lamina
Cilia
Microvilli
Stereocilia ✅Cilia

The type of intercellular junction located adjacent to the apical surface of an epithelial
cell used to seal off the intercellular space from the outside space is a:
Desmosome
Hemidesmosome

, Zonula adherens
Zonula occludens ✅Zonula occludens

The connective tissue cell whose role is to phagocytize debris around a wound is the
Fibroblast
Macrophage
Mast cell
Plasma cell ✅Macrophage

The ground substance of connective tissue is rich in heavily hydrated complex mixture
of macromolecules. All the following are examples of such complex mixtures of
macromolecules EXCEPT ONE. Which one is the EXCEPTION?
Acetylcholine
Aggrecan
Fibronectin
Hyaluronan (hyaluronic acid) ✅Acetylcholine

Antibody producing cells are the:
Fibroblasts
Macrophages
Mast cells
Plasma cells ✅Plasma cells

A 20 year ✅old female college student presents to your office with a pierced lip. The lip
stud is positioned 1 cm below the medium portion of her inferior lip. The tissue around
the stud is red and appears inflamed. She complains that the area is painful. Which of
the following cell types is a wandering cell that you would expect to be increased in
number at the site that appears red?
Adipocytes
Leukocytes
Fibroblasts
Mast cells-Leukocytes

The type of connective tissue proper immediately adjacent to the epithelium (e.g. the
papillary layer of skin) is most likely to be:
Dense, irregular connective tissue
Dense, regular connective tissue
Loose connective tissue ✅Loose connective tissue

Collagen synthesis is a product of which of the following cells?
Adipocytes
Fibroblasts
Mast cells
Plasma cells ✅Fibroblast

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