BIO 168 EXAM 2 |75 QUESTIONS AND ANSWERS
2025
Select the most correct statement concerning skin cancer.
A) Most tumors that arise on the skin are malignant.
B) Squamous cell carcinomas arise from the stratum corneum.
C) Basal cell carcinomas are the least common but most malignant.
D) Melanomas are rare but must be removed quickly to prevent them from metastasizing. -
-D
-The single most important risk for skin cancer is ______.
A) race
B) genetics
C) use of farm chemicals
D) overexposure to UV radiation - -D
-Which of the following is a skin sensory receptor for touch?
A) Pacinian corpuscule
B) Tactile Corpuscle
C) Ruffini body
D) free nerve ending - -B
-Which glands produce ear wax?
A) merocrine glands
B) apocrine glands
C) ceruminous glands
D) eccrine glands - -C
-Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly
and metastasize?
A) melanoma
B) squamous cell carcinoma
C) basal cell carcinoma
D) adenoma - -B
-Melanocytes and keratinocytes work together in protecting the skin from UV damage
when Keritonocytes _____________.
A) provide the melanocyte with nutrients necessary for melanin synthesis
B) accumulate the melanin granules on their superficial portion, forming a UV-blocking
pigment layer
C) maintain the appropriate pH in order for the melanocyte to synthesize melanin granules
D) maintain the appropriate temperature so the product of the melanocyte will not
denature - -B
, -The dermis is a strong, flexible connective tissue layer. Which of the following cell types
are likely to be found in the dermis?
A) goblet cells, parietal cells, and chondrocytes
B) monocytes, reticulocytes, and osteocytes
C) fibroblasts, macrophages, and mast cells
D) osteoblasts, osteoclasts, and epithelial cells - -C
-The dermis has two major layers. Which layer constitutes 80% of the dermis and is
responsible for the tension lines in the skin?
A) The reticular layer
B) the subcutaneous layer
C) the hypodermal layer
D) the papillary layer - -A
-Despite its apparent durability, the dermis is subject to tearing. How might a person know
that the dermis has been previously stretched and / or torn?
A) There is an episode of acute pain due to the large number of tactile corpuscules.
B) the appearance of visible, silvery-white scars is an indication of stretching of the dermis.
C) The blood vessels in the dermis rupture and the blood passes through the tissue, causing
permanent "black-and-blue marks."
D) The stretching causes the tension lines to disappear. - -B
-Which of the following statements indicates the way in which the body's natural defenses
protect the skin from the effects of UV damage?
A) The skin is protected by the synthesis of three pigments that contribute to the skin's
color.
B) Carotene, which accumulates in the stratum corneum and the hypodermal adipose
tissue, is synthesized in large amounts in the presence of sunlight.
C) The skin is protected by increasing the number of epidermal dendritic cells, which help
the activate the immune system
D) prolonged exposure to the sun induces melanin dispersion, which in turn acts as a
natural sunscreen. - -D
-Changes in the color of skin are often an indication of a homeostatic imbalance. Which of
the following changes would suggest that a patient is suffering from Addison's disease?
A) The skin takes on a bronze or metallic appearance
B) Black-and-blue marks become evident for no apparent cause
C) The skin appears to have an abnormal, yellowish tint
D) It is impossible to suggest Addison's disease from an inspection of a person's skin. - -A
-A dendritic or Langerhan cell is a specialized
A) squamous epithelial cell
B) Phagocytic cell
C) nerve cell
D) melanocyte - -B
2025
Select the most correct statement concerning skin cancer.
A) Most tumors that arise on the skin are malignant.
B) Squamous cell carcinomas arise from the stratum corneum.
C) Basal cell carcinomas are the least common but most malignant.
D) Melanomas are rare but must be removed quickly to prevent them from metastasizing. -
-D
-The single most important risk for skin cancer is ______.
A) race
B) genetics
C) use of farm chemicals
D) overexposure to UV radiation - -D
-Which of the following is a skin sensory receptor for touch?
A) Pacinian corpuscule
B) Tactile Corpuscle
C) Ruffini body
D) free nerve ending - -B
-Which glands produce ear wax?
A) merocrine glands
B) apocrine glands
C) ceruminous glands
D) eccrine glands - -C
-Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly
and metastasize?
A) melanoma
B) squamous cell carcinoma
C) basal cell carcinoma
D) adenoma - -B
-Melanocytes and keratinocytes work together in protecting the skin from UV damage
when Keritonocytes _____________.
A) provide the melanocyte with nutrients necessary for melanin synthesis
B) accumulate the melanin granules on their superficial portion, forming a UV-blocking
pigment layer
C) maintain the appropriate pH in order for the melanocyte to synthesize melanin granules
D) maintain the appropriate temperature so the product of the melanocyte will not
denature - -B
, -The dermis is a strong, flexible connective tissue layer. Which of the following cell types
are likely to be found in the dermis?
A) goblet cells, parietal cells, and chondrocytes
B) monocytes, reticulocytes, and osteocytes
C) fibroblasts, macrophages, and mast cells
D) osteoblasts, osteoclasts, and epithelial cells - -C
-The dermis has two major layers. Which layer constitutes 80% of the dermis and is
responsible for the tension lines in the skin?
A) The reticular layer
B) the subcutaneous layer
C) the hypodermal layer
D) the papillary layer - -A
-Despite its apparent durability, the dermis is subject to tearing. How might a person know
that the dermis has been previously stretched and / or torn?
A) There is an episode of acute pain due to the large number of tactile corpuscules.
B) the appearance of visible, silvery-white scars is an indication of stretching of the dermis.
C) The blood vessels in the dermis rupture and the blood passes through the tissue, causing
permanent "black-and-blue marks."
D) The stretching causes the tension lines to disappear. - -B
-Which of the following statements indicates the way in which the body's natural defenses
protect the skin from the effects of UV damage?
A) The skin is protected by the synthesis of three pigments that contribute to the skin's
color.
B) Carotene, which accumulates in the stratum corneum and the hypodermal adipose
tissue, is synthesized in large amounts in the presence of sunlight.
C) The skin is protected by increasing the number of epidermal dendritic cells, which help
the activate the immune system
D) prolonged exposure to the sun induces melanin dispersion, which in turn acts as a
natural sunscreen. - -D
-Changes in the color of skin are often an indication of a homeostatic imbalance. Which of
the following changes would suggest that a patient is suffering from Addison's disease?
A) The skin takes on a bronze or metallic appearance
B) Black-and-blue marks become evident for no apparent cause
C) The skin appears to have an abnormal, yellowish tint
D) It is impossible to suggest Addison's disease from an inspection of a person's skin. - -A
-A dendritic or Langerhan cell is a specialized
A) squamous epithelial cell
B) Phagocytic cell
C) nerve cell
D) melanocyte - -B
