Multiple Choice
Which of the following responses is mediated by intermediate proteins and second messengers?
A) An electrical signal is generated when a mechanoreceptor is distorted by water movement.
B) The rate of synthesis of a particular protein is increased when a hormone/receptor complex binds to a specific region of DNA.
C) Ion channels on the plasma membrane of a photoreceptor are closed after the absorption of a photon of light.
D) Water soluble ligands interact with receptors to open an ion channel and cause membrane depolarisation.
E) All of the answers are correct.
Correct Answer:
Verified
Correct Answer:
Verified
Q18: Some chemical signal molecules are excluded from
Q19: Cells of the yeast Saccharomyces cerevisiae use
Q20: Hemidesmosomes are<br>A) adherens junctions connecting the actin
Q21: Cells in the apical meristems of the
Q22: The three major tissue systems of vascular
Q24: A PhD student has been given a
Q25: Which tissue system of vascular plants is
Q26: Adenyl cyclase is a (n)<br>A) cell surface
Q27: After observation under the microscope, an animal
Q28: Mechanoreceptors respond to physical stimuli including<br>A) stretch