A skin cell in the stratum granulosum has experienced a mutation that altered its ability to produce keratin. Should this be a health concern for the individual?
A. Yes, because cells of the stratum granulosum divide by mitosis to produce keratin to protect the skin.
B. Yes, without normal cell function in the stratum granulosum, the skin will lose color due to lack of melanin production.
C. No, cells of the stratum granulosum only produce the waterproofing material in the skin.
D. No, because cells of the stratum granulosum are dying cells that do not reproduce, so the mutation will be isolated to the one cell.
Answer: D
You might also like to view...
The threshold of a neuron is the
A) total amount of neurotransmitter it takes to cause an action potential. B) voltage that triggers activation of voltage-gated channels. C) time between binding of the neurotransmitter and firing of an action potential. D) voltage across the resting cell membrane.
If someone spills very hot coffee (200 0F) on their skin, they will likely perceive much pain. Which of the following receptor types is causing this sensation?
A) nociceptors
B) chemoreceptors
C) mechanoreceptors
D) thermoreceptors
A movement through 360 degrees that combines flexion, extension, abduction, and adduction is called ________.
A. hyperextension B. pronation C. rotation D. supination E. circumduction
What is the importance of the mesenteries?
A) they increase the surface area available for absorption in the small intestine B) they produce enzymes to increase the digestion of proteins and fats in the small intestine C) they support and stabilize organs of the abdominal cavity and provide a passageway for blood vessels, nerves, and lymphatic vessels D) they consist of smooth muscle that contracts to push food along the digestive tract E) they produce hormones that regulate the activities of the digestive organs