BIO 201 Exam 2 Clicker and Quiz Questions and Correct Answers
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Course
BIO 201
Institution
BIO 201
Which of the following is not found in the epidermis? A) melanocytes B) fibroblasts C) stem cells D) keratinocytes E) tactile cells B) fibroblasts
Which layer of the epidermis consists of up to 30 layers of dead cells? A) stratum basale B) stratum spinosum C) stratum granulosum D) stratum lucidum ...
BIO 201 Exam 2 Clicker and Quiz
Questions and Correct Answers
Which of the following is not found in the epidermis?
A) melanocytes
B) fibroblasts
C) stem cells
D) keratinocytes
E) tactile cells ✅B) fibroblasts
Which layer of the epidermis consists of up to 30 layers of dead cells?
A) stratum basale
B) stratum spinosum
C) stratum granulosum
D) stratum lucidum
E) stratum corneum ✅E) stratum corneum
The reddish color of the lips is primarily due to the presence of which pigment?
A) hemoglobin
B) myoglobin
C) melanin
D) carotene
E) keratin ✅A) hemoglobin
What type of hair is present prenatally and usually replaced by birth?
A) lunule
B) peach fuzz
C) terminal hair
D) vellus
E) lanugo ✅E) lanugo
The oil of your scalp is secreted by ____ glands associated with hair follicles.
A) merocrine sweat
B) apocrine sweat
C) sebaceous
D) ceruminous
E) eccrine sweat ✅C) sebaceous
Which 2 strata of the epidermis are most susceptible to cancer?
A) stratum corneum & stratum lucidum
B) stratum basale & stratum corneum
C) stratum spinosum & stratum basale
D) stratum granulosum & stratum spinosum
Which of the following is not a function of the skeleton?
A) storage of calcium and phosphate ions
B) storage of red blood cells
C) providing support for most muscles
D) protecting the brain
E) protecting the spinal cord ✅B) storage of red blood cells
The center cavity of the diaphysis of a long bone is the _______
A) marrow cavity
B) central canal
C) nutrient foramen
D) canaliculus
E) epiphysis ✅A) marrow cavity
In endochondral ossification, precursor connective tissue is _____, which is replaced by
bone.
A) embryonic mesenchyme
B) fibrous membranes
C) hyaline cartilage
D) transitional epithelium
E) fibrocartilage ✅C) hyaline cartilage
The spaces found within the concentric lamellae are called _____, and they contain
______.
A) canaliculi/osteoblasts
B) osteons/stem cells
C) lacunae/osteocytes
D) lacunae/osteoclasts
E) central canals/osteocytes ✅C) lacunae/osteocytes
Which of the following exemplifies a positive feedback process happening in bone
mineral deposition?
A) the first few crystals that form attract more calcium and phosphate
B) osteoblasts neutralize inhibitors that prevent bone resorption
C) osteroclasts secrete acid phosphatase that digests collagen
D) collagen is digested by enzymes and hydroxyapatite by hydrochloric acid
E) solubility product is reached in tissue fluids ✅A) first few crystals that form attract
more calcium & phosphate
Blood calcium deficiency stimulates ______ secretion, which leads to _____
A) calcitonin/more urinary phosphate reabsorption
B) calcitriol/more urinary phosphate excretion
C) growth hormone/increased osteoblast activity
D) parathyroid hormone/increased osteoclast activity
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