Which of the following statements about the stimulation of muscle cells is true?
A. Neurotransmitters are released into the synapse between two muscle cells.
B. An action potential in a muscle cell ultimately results in the release of calcium ions into the cell.
C. Calcium ions bind the actin-myosin complex to start the muscle contraction process.
D. Acetylcholine opens channels that allow calcium ions into the muscle cell.
Answer: B. An action potential in a muscle cell ultimately results in the release of calcium ions into the cell.
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Gustation is our sense of
A. taste. B. smell. C. limb position. D. light touch. E. pain.
Which of the following is an example of a reporter gene?
A) The linkers that are attached to RNA molecules to perform RNA-Seq B) The lacZ coding sequence under the control of a prokaryotic promoter C) The DNase I enzyme used to digest DNA for a footprint assay D) A human protein expressed under the control of a prokaryotic promoter
The chromatids detach from one another during __________________.
A. anaphase B. metaphase C. interphase D. prophase E. telophase
What are the three areas of the inner ear?
What will be an ideal response?