Podcast
Questions and Answers
Which of the following signaling molecules bind to intracellular receptors?
Which of the following signaling molecules bind to intracellular receptors?
- Neurotransmitters like norepinephrine and histamine
- Growth factors like NGF and EGF
- Peptide hormones like insulin and glucagon
- Lipid-soluble hormones like steroids, thyroid hormone, and vitamin D3 (correct)
Which type of receptor recognizes and binds to signaling molecules that cannot cross the plasma membrane?
Which type of receptor recognizes and binds to signaling molecules that cannot cross the plasma membrane?
- Intracellular receptors
- Neither intracellular nor membrane receptors
- Both intracellular and membrane receptors
- Membrane receptors (correct)
Which of the following signaling molecules is a gas?
Which of the following signaling molecules is a gas?
- Nitric oxide (NO) (correct)
- Insulin
- Epinephrine
- Prostaglandins
Which of the following statements about signaling molecules is correct?
Which of the following statements about signaling molecules is correct?
Which of the following is not a type of signaling molecule that binds to cell-surface receptors?
Which of the following is not a type of signaling molecule that binds to cell-surface receptors?
Which of the following statements about autocrine signaling is correct?
Which of the following statements about autocrine signaling is correct?
What is the main difference between endocrine signaling and paracrine signaling ?
What is the main difference between endocrine signaling and paracrine signaling ?
Which of the following is NOT a characteristic of steroid hormone signaling as described in the text?
Which of the following is NOT a characteristic of steroid hormone signaling as described in the text?
Which of the following is an example of contact-dependent, or juxtacrine, cell-cell signaling mentioned in the text?
Which of the following is an example of contact-dependent, or juxtacrine, cell-cell signaling mentioned in the text?
What type of signaling is characterized by differentiating cells producing signals to which they also respond?
What type of signaling is characterized by differentiating cells producing signals to which they also respond?
What is the term used to describe a group of cells producing the same autocrine signal resulting in a strong signal for differentiation?
What is the term used to describe a group of cells producing the same autocrine signal resulting in a strong signal for differentiation?
Which type of cell junction allows neighboring cells to share small molecules and respond to extracellular signals in a coordinated way?
Which type of cell junction allows neighboring cells to share small molecules and respond to extracellular signals in a coordinated way?
In complex multicellular organisms, what type of signaling is not sufficient to coordinate cell behavior due to the long distances between cells?
In complex multicellular organisms, what type of signaling is not sufficient to coordinate cell behavior due to the long distances between cells?
What enables nerve cells to contact target cells far away and secrete neurotransmitters at specialized cell junctions?
What enables nerve cells to contact target cells far away and secrete neurotransmitters at specialized cell junctions?
What feature of animal cells allows each cell type to respond to specific sets of signal molecules to regulate behavior?
What feature of animal cells allows each cell type to respond to specific sets of signal molecules to regulate behavior?
What happens to a cell if it is deprived of appropriate survival signals?
What happens to a cell if it is deprived of appropriate survival signals?
How does acetylcholine affect heart muscle and salivary gland cells?
How does acetylcholine affect heart muscle and salivary gland cells?
What is the role of nitric oxide (NO) in regulating smooth muscle contraction in blood vessels?
What is the role of nitric oxide (NO) in regulating smooth muscle contraction in blood vessels?
How does acetylcholine indirectly affect smooth muscle cells in blood vessel walls?
How does acetylcholine indirectly affect smooth muscle cells in blood vessel walls?
In which year was nitric oxide (NO) recognized as the "Molecule of the Year"?
In which year was nitric oxide (NO) recognized as the "Molecule of the Year"?
What is the enzyme responsible for synthesizing nitric oxide from arginine amino acid?
What is the enzyme responsible for synthesizing nitric oxide from arginine amino acid?
