Muscle cells with more than one nucleus are
A) smooth muscle cells only.
B) skeletal muscle cells only.
C) smooth muscle cells and skeletal muscle cells.
D) cardiac muscle cells and smooth muscle cells.
B
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Which of the following functions are controlled by the higher centers in the motor control hierarchy?A) Forming a complex plan of footsteps while learning salsa dancingB) Trying to remember the motions involved in writing the second character in the Chinese alphabetC) Specifying tension of specific muscles involved in a soccer kickD) Comparing muscle contraction program with the initial plan while mastering a golf swingE) None of these functions are controlled by higher centers.
What will be an ideal response?
For which of the following organelles are the structure and function correctly described?
A) Ribosomes—membranous vesicles containing digestive enzymes B) Golgi apparatus—particles, composed of protein and RNA, which synthesize proteins C) Mitochondrion—nonmembranous structure that synthesizes proteins D) Endoplasmic reticulum—a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion
More than 95 percent of the protein in a red blood cell is
A) albumin. B) porphyrin. C) hemoglobin. D) immunoglobulin. E) fibrinogen.
The foreign, or "non-self" substances that trigger immune responses are called ________.
Fill in the blank(s) with the appropriate word(s).