Which of the following is not true of melanin?
A) There is more than 1 type of melanin.
B) Melanin is released by exocytosis.
C) It is manufactured from tyrosine.
D) It is packaged in vesicles called melanosomes.
E) It absorbs UV radiation.
B
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A condition of reduced bone mineral density that predisposes the individual to fractures is called ___________________. ________________________________________
Fill in the blank(s) with the appropriate word(s).
A short and narrow, round-pointed metal or plastic tube that is used to pass from the exterior through the teat canal and into the teat cistern to relieve teat obstructions is called the teat ________________________________________
Fill in the blank(s) with correct word
During a single contraction, each myosin molecule undergoes the cycle of cross-bridge formation, movement, release, and return to its original position many times. This process is called _______.
a. excitation-contraction coupling b. cross-bridge cycling c. the power stroke d. the recovery stroke
Melanocyte cytoplasmic processes transfer pigment granules into stratum basal keratinocytes; these pigment granules shield the nuclear DNA from UV radiation.
Answer the following statement true (T) or false (F)