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BIO 446L: Final Extra Credit Exam Questions and Correct Answers
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Which of the following cellular structures is an intermediate filament? Vimentin The microfilaments that form a framework within a microvillus is formed by Actin The cytoskeleton structures that guides vesicles in their movement within cell are Microtubules Lipid synthesis is a function of which...

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  • August 17, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bio 446l final extra credit exam questions and co
  • which of the following cellular structures is an i
  • the microfilaments that form a framework within a

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BIO 446L: Final Extra Credit Exam
Questions and Correct Answers
Which of the following cellular structures is an intermediate filament? ✅Vimentin

The microfilaments that form a framework within a microvillus is formed by ✅Actin

The cytoskeleton structures that guides vesicles in their movement within cell are
✅Microtubules

Lipid synthesis is a function of which organelle? ✅Smooth endoplasmic reticulum

A cell that is actively synthesizing proteins or is located with a rapidly growing tumor is
characterized by a large ✅Nucleolus

The mechanism by which extracellular fluid is brought into a cell is called ✅Pinocytosis

Transport vesicles carry proteins to what organelle to complete posttranslational
modifications. ✅Golgi apparatus

Which of the following organelles of the cell is closest in proximity to the nucleus?
✅Endoplasmic reticulum

All the following structures can be located within the plasmalemma of a cell EXCEPT
ONE. The EXCEPTION is: ✅Cytosol

A free surface specialization that moves mucous in the trachea is the ✅Cilia

All the following statements about an epithelium are TRUE EXCEPT ONE. Which one is
the EXCEPTION? ✅Has a limited capacity for cells to divide

Which of the following types of epithelia has all cells attached to the basal lamina, but
not all cells reach the free surface? ✅Pseudostratified columnar

Which of the following types of epithelia has cells that are flat on the surface but
cuboidal in the basal layer? ✅Stratified squamous

Which type of gland is associated with a blind sac for a lumen? ✅Acinar

Which of the following types of epithelium secrete tears? ✅Simple cuboidal

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

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

The term used to describe the connective tissue that an epithelium lining the digestive
tract rests upon is the: ✅Lamina propria

A free surface specialization of a cell that increases surface area in the small intestine is
✅Microvilli

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

A free surface specialization only found on hair cells of the inner ear and in epididymis
of male reproductive system is: ✅Stereocilia

The connective tissue that is found in a tendon is: ✅Dense, regular

Antibody producing cells are the: ✅Plasma cells

The predominate type of collagen found in reticular fibers is: ✅Collagen Type III

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. The
redness most likely reflects increased blood flow in which tissue? ✅Loose connective
tissue

The connective tissue cell that promotes an allergic response by releasing chemicals
like histamine is the ✅Mast cell

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

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

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? ✅Leukocytes

, The ground substance of connective tissue is rich in heavily hydrated
glycosaminoglycans, proteoglycans and multiadhesive glycoproteins. An example of a
proteoglycan found in cartilage is: ✅Aggrecan

The process by which a leukocyte migrates from a blood vessel into the connective
tissue is called: ✅Diapedesis

The largest and most unique GAG (glycoaminoglycan) is: ✅Hyaluronic acid
(hyaluronan)

The predominate type of fiber found in the connective tissue deep to the epithelium of
skin is ✅Collagen Type I

Within an adipocyte, the storage droplets store: ✅Triglycerides

The type of fat whose primary role is heat generation is ✅Brown

The type of adipose tissue that is uniformly distributed over the body at birth and is
redistributed later due to the influences of sex hormones is: ✅White

Interstitial growth of cartilage occurs ✅In the epiphyseal growth plate

Growth and repair of hyaline cartilage is limited because its: ✅Avascular

Hyaline cartilage is composed of an extracellular matrix that contains which type of
collagen? ✅Type II collagen

Resistance to both compression and shear forces is best met via ✅Fibrocartilage

All the following statements about an osteon are true EXCEPT ONE. Which statement
is the EXCEPTION? ✅It has osteocytes isolated within the bone

The regulation of bone metabolism occurs primarily in which type of bone ✅Cancellous
bone

Bone matrix is composed of what type of collagen? ✅Type I

During intramembranous bone formation: ✅Mesenchymal cells first differentiate into
osteoblasts that secrete osteoid

All the following statements are true about osteocytes EXCEPT ONE. Which one is the
EXCEPTION? Osteocytes: ✅Change morphology to become osteoclasts

The triad in a muscle fiber is composed of: ✅Two terminal cisterna and a T-tubule

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