Desmosomes form channels that allow each cardiocyte to electrically stimulate its neighbors
Indicate whether the statement is true or false
FALSE
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The antibodies produced in allergic reactions
A. belong to the immunoglobulin G group. B. belong to the immunoglobulin E group. C. are secreted by mast cells. D. are called allergens.
Which of the following statements regarding cellulose is true?
A. Cellulose is one of the units of a sucrose molecule. B. Cellulose is another name for glucose. C. Cellulose is a source of energy. D. Cellulose can be digested by human digestive enzymes. E. Cellulose provides fiber or "roughage."
If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is
A) 26. B) 16. C) 18. D) 8. E) 12.
Muscle cells
A) actively lengthen. B) generate compression. C) possess a mechanism that regulates the tension amount by changing the number of contracting sarcomeres. D) vary tension production based on the amount of sodium ions bound to actin. E) can only contract