Which ion(s) is/are higher in concentration inside the cell compared to outside?
A) calcium
B) potassium
C) sodium
D) chloride
E) More than one of the answers is correct.
B) potassium
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When tissues are injured or infected, chemical signals can be releases that affect the plasma membrane of cells that line the nearby blood vessels
These blood vessels cells (endothelial cells) respond to the chemical signals by displaying a type of glycoproteins on their surface. These proteins will attach to circulating white blood cells bringing them to the site of injury or infection. These glycoproteins would best be described as ________. A) desmosomes B) G-proteins C) transport proteins D) Cell Adhesion Molecules (CAMs)
Collagenous fibers are very abundant in ________.
A. tendons, ligaments, and the deeper portion of the skin B. areolar tissue, tongue, and bones C. blood and hyaline cartilage D. blood, adipose tissue, and osseous tissue E. ligaments, bones, and the most superficial portion of the skin
Muscle excitability is defined as the ability ______.
a. to respond to a stimulus b. of a muscle to recoil to its original resting length being stretched c. of a muscle to shorten forcefully d. to contract when stretched beyond is normal resting length
Photoreceptors contain the enzyme to re-isomerize the all-trans retinal back to the 11-cis form.
Answer the following statement true (T) or false (F)