Review questions for Cell Cytoplasm 1

Question 1

It is considered as the “wear-and-tear” pigment

A. Hemosiderin
B. Lipofuscin
C. Glycogen
D. Lipid Inclusions (fat droplets)

Answer 1

B. Lipofuscin

Lipofuscin is a conglomerate of oxidized lipids, phospholipids, metals, and organic molecules that accumulate within the cells as a result of oxidative degradation of mitochondria and lysosomal digestion. It accumulates during the years in most eukaryotic cells as a result of cellular senescence (aging)

Question 2

These cells have a characteristic ‘signet ring’ appearance.

A. Ringocytes
B. Squamous Epithelial Cells
C. Myelocytes
D. Adipocytes

Answer 2

D. Adipocytes

Adipose cells accumulate fats, pushing the nucleus and other
organelles to the periphery, compressing the nucleus and making the cell resemble a “signet ring”

Question 3

Which of the following pairing is correct:

A. Hematoxylin - Blue - Cytoplasm
B. Eosin – Red – Nucleus
C. Hematoxylin - Blue – Nucleus
D. Eosin – Blue - Cytoplasm

Answer 3

C. Hematoxylin - Blue – Nucleus

Hematoxylin imparts BLUE color, a basic dye, and reacts to the
acidic nucleus to impart blue staining

Question 3

Periodic Acid Schiff, when used on certain kinds of tissues, imparts a red color on which kind of inclusion body?

A. Glycogen
B. Hemosiderin
C. Glucose
D. Lipofuscin

Answer 3

A. Glycogen

The periodic acid-Schiff (PAS) staining procedure is most
commonly used in the histology to detect glycogen deposits

Question 4

Cholesterol molecules found in the cell membrane have the following function except:

A. Enhancement of the permeability of the membrane
B. Involved in the restriction of movements of membrane components, regulating fluidity
C. Attached to cell membrane along with the phospholipids with its hydroxyl groups towards the hydrophilic tail
D. Involvement in the pacing of lipid rafts

Answer 4

C. Attached to cell membrane along with the phospholipids
with its hydroxyl groups towards the hydrophilic tail

hydroxyl group of cholesterol (hydrophilic) orients its its
arrangement towards and close to the polar head of the
phospholipid.

Question 5

Sodium-potassium pump is what type of membrane protein?

A. Integral membrane Protein
B. Peripheral membrane protein
C. Both A and B
D. None of the Above

Answer 5

B. Peripheral membrane protein

Question 6

What would be the predominant brown colored inclusion bodies found in the skin?

A. Hemosiderin
B. Melanin
C. Lipofuscin
D. None of the above

Answer 6

B. Melanin

Melanin inclusion bodies can be distinguished from lipofuscin as it will be predominantly found on the skin tissues

Question 7

Hemorrhagic pulmonary infections, even if they happened a long time ago, can still be determined from a tissue sample of the lungs. Indication of the presence of lipofuscin in the lung tissue.

A. True
B. False
C. uncertain

Answer 7

B. False

Presence of hemosiderin in the alveoli would tell you that
there have been previous bleeding in the area of the lungs

Question 8

Hereditary Spherocytosis most probably

A. Congenital
B. Acquired
C. Not certain

Answer 8

A. Congenital

The term “hereditary” gives you the coin that it is mostly
a congenital disorder

Question 9

The freeze fracture model of the cell membrane highlights the presence of

A. Carbohydrate leaflets in the outer cell membrane
B. Presence of cholesterol within the lipid bilayers
C. Integral and peripheral proteins as indicated by protrusion-depression patterns
D. The presence of multiple mitochondria in the muscle cells

Answer 9

C. Integral and peripheral proteins as indicated by protrusion-depression patterns