________ provides the energy to help the myosin heads form and break the crossbridges with actin.
A. ATP
B. Calcium
C. Potassium
D. Vitamin D
Answer: A
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The muscle group on the posterior thigh is called the ________ group
A) hamstring B) quadricep C) femoris D) adductor E) extensor
A nucleotide consists of a
A) phosphate group and a nitrogenous base. B) five -carbon sugar and an amino acid. C) five -carbon sugar and a nitrogenous base. D) five -carbon sugar, a nitrogenous base, and a phosphate group. E) five -carbon sugar and phosphate group.
Following blunt trauma to the face, a 30-year-old man presents with epistaxis, double vision, and an inability to look upward. You should be MOST suspicious of:
A) traumatic conjunctivitis. B) an orbital blowout fracture. C) traumatic retinal detachment. D) fracture of the cribriform plate.
A structure made up of two or more types of tissues that performs a specific set of functions is at what level of organization?
a. chemical b. cellular c. tissue d. organ e. system