BIO201L Straightline
Tissues & Skin
Pre Lab Questions
(With Solutions)
2025
1
,Multiple Choice
Which of the following cell junctions is most important in preventing
leakage of extracellular fluid across a layer of epithelial cells?
A) Desmosomes
B) Gap junctions
C) Tight junctions
D) Hemidesmosomes
ANS: C
Rationale: Tight junctions seal adjacent cells, preventing passage of
substances between them.
Which type of connective tissue acts as the primary energy storage
site and also insulates the body?
A) Dense regular connective tissue
B) Hyaline cartilage
C) Adipose tissue
D) Reticular connective tissue
ANS: C
Rationale: Adipose tissue stores lipids and conserves heat.
In a case study of wound healing, which process occurs immediately
after injury?
A) Proliferation
B) Maturation
C) Inflammation
D) Remodeling
ANS: C
Rationale: Inflammation is the first stage of wound healing.
Melanocytes primarily reside in which layer of the skin?
A) Stratum corneum
B) Stratum spinosum
C) Stratum basale
2
, D) Dermis
ANS: C
Rationale: Melanocytes are located in the stratum basale.
Which epidermal cell type is responsible for detecting touch
sensations?
A) Keratinocyte
B) Merkel cell
C) Langerhans cell
D) Fibroblast
ANS: B
Rationale: Merkel cells are associated with sensory nerve endings.
A patient with Marfan syndrome demonstrates a defect in what
connective tissue protein?
A) Elastin
B) Collagen type II
C) Laminin
D) Fibrillin
ANS: D
Rationale: Fibrillin is defective in Marfan syndrome, affecting
connective tissue integrity.
Which glandular structure is classified as holocrine in mode of
secretion?
A) Sweat gland
B) Sebaceous gland
C) Pancreatic acini
D) Salivary gland
ANS: B
Rationale: Sebaceous glands release secretions through cell rupture.
Which of these layers is absent in thin skin but present in thick skin?
A) Stratum corneum
B) Stratum spinosum
3
Tissues & Skin
Pre Lab Questions
(With Solutions)
2025
1
,Multiple Choice
Which of the following cell junctions is most important in preventing
leakage of extracellular fluid across a layer of epithelial cells?
A) Desmosomes
B) Gap junctions
C) Tight junctions
D) Hemidesmosomes
ANS: C
Rationale: Tight junctions seal adjacent cells, preventing passage of
substances between them.
Which type of connective tissue acts as the primary energy storage
site and also insulates the body?
A) Dense regular connective tissue
B) Hyaline cartilage
C) Adipose tissue
D) Reticular connective tissue
ANS: C
Rationale: Adipose tissue stores lipids and conserves heat.
In a case study of wound healing, which process occurs immediately
after injury?
A) Proliferation
B) Maturation
C) Inflammation
D) Remodeling
ANS: C
Rationale: Inflammation is the first stage of wound healing.
Melanocytes primarily reside in which layer of the skin?
A) Stratum corneum
B) Stratum spinosum
C) Stratum basale
2
, D) Dermis
ANS: C
Rationale: Melanocytes are located in the stratum basale.
Which epidermal cell type is responsible for detecting touch
sensations?
A) Keratinocyte
B) Merkel cell
C) Langerhans cell
D) Fibroblast
ANS: B
Rationale: Merkel cells are associated with sensory nerve endings.
A patient with Marfan syndrome demonstrates a defect in what
connective tissue protein?
A) Elastin
B) Collagen type II
C) Laminin
D) Fibrillin
ANS: D
Rationale: Fibrillin is defective in Marfan syndrome, affecting
connective tissue integrity.
Which glandular structure is classified as holocrine in mode of
secretion?
A) Sweat gland
B) Sebaceous gland
C) Pancreatic acini
D) Salivary gland
ANS: B
Rationale: Sebaceous glands release secretions through cell rupture.
Which of these layers is absent in thin skin but present in thick skin?
A) Stratum corneum
B) Stratum spinosum
3
