Skin wrinkles with age because
A. fat is lost from the subcutaneous layer and the dermis shrinks.
B. epidermal cells undergo a burst of cell division.
C. the number of sweat glands diminishes.
D. collagen degrades in the subcutaneous layer as the epidermis shrinks.
Answer: A
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Select the correct statement about oxygen transport in blood:
A) During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2. B) During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently. C) Increased BPG levels in the red blood cells enhance oxygen-carrying capacity. D) A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal.
Mycoplasma bacteria lack a cell ________________________________________
Fill in the blank(s) with correct word
Movement of the Large Intestine
What will be an ideal response?
Vital capacity is
A. Inhaling the maximum amount of air. B. maximum volume of air moved in and out during a single deep breath. C. air moved in and out with each breath. D. air remaining in lungs after very deep exhalation.