BIOD 101 Module 5 (EXAM) Test Questions and
Answers Rated A
Which of the following signaling types is used to List TWO specific examples of cellular ligands. -
transmit ligands to their target cells over long ANSWER -Hormones, peptides, sugars,
distances, using the circulatory system as a and other hydrophobic molecules.
transport medium?
1. Autocrine signaling So calcium and female sex hormones would
classify as ligands.
2. Endocrine signaling
3. Direct cell-to-cell signaling Fill in the Blank:
4. Paracrine signaling Transduction is the chain of ___________ and
intracellular ___________ that relay signals
5. Synaptic signaling - ANSWER - inside of a cell. - ANSWER -1. Molecules
Endocrine signaling. 2. Enzymes
Explain why a steroid hormone would require a Which of the following statements is true of
carrier protein to transport it through the GPCRs?
bloodstream. - ANSWER -Steroid
hormones are hydrophobic. They would require a 1. They thread through the plasma membrane
carrier protein to carry it through the blood forming loops.
because it is considered hydrophilic.
2. They are transmembrane hormone receptors.
Each of the following is true regarding cellular 3. A modified loop receives ligands on their
receptors except: intracellular side.
1. Receptors in each family are classified by their 4. All of the above. - ANSWER -They thread
location in the body. through the plasma membrane forming loops.
2. Most receptors are located on the outside of a
cell, anchored in the plasma membrane. Fill in the Blank:
3. Cell surface receptors contain an extracellular For most biological processes, a typical response
region, intracellular region, and a hydrophobic would be the release of ___________ of
region in the plasma membrane. molecules every ___________ that binds. -
ANSWER -1. Millions
2. Ligand
4. Intracellular receptors are located in the cell's
cytoplasm. - ANSWER -Receptors in each
family are classified by their location in the body. What role do the ligands involved in endocrine
signaling serve in the body. - ANSWER -
Hormones are the ligands involved in endocrine
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Answers Rated A
Which of the following signaling types is used to List TWO specific examples of cellular ligands. -
transmit ligands to their target cells over long ANSWER -Hormones, peptides, sugars,
distances, using the circulatory system as a and other hydrophobic molecules.
transport medium?
1. Autocrine signaling So calcium and female sex hormones would
classify as ligands.
2. Endocrine signaling
3. Direct cell-to-cell signaling Fill in the Blank:
4. Paracrine signaling Transduction is the chain of ___________ and
intracellular ___________ that relay signals
5. Synaptic signaling - ANSWER - inside of a cell. - ANSWER -1. Molecules
Endocrine signaling. 2. Enzymes
Explain why a steroid hormone would require a Which of the following statements is true of
carrier protein to transport it through the GPCRs?
bloodstream. - ANSWER -Steroid
hormones are hydrophobic. They would require a 1. They thread through the plasma membrane
carrier protein to carry it through the blood forming loops.
because it is considered hydrophilic.
2. They are transmembrane hormone receptors.
Each of the following is true regarding cellular 3. A modified loop receives ligands on their
receptors except: intracellular side.
1. Receptors in each family are classified by their 4. All of the above. - ANSWER -They thread
location in the body. through the plasma membrane forming loops.
2. Most receptors are located on the outside of a
cell, anchored in the plasma membrane. Fill in the Blank:
3. Cell surface receptors contain an extracellular For most biological processes, a typical response
region, intracellular region, and a hydrophobic would be the release of ___________ of
region in the plasma membrane. molecules every ___________ that binds. -
ANSWER -1. Millions
2. Ligand
4. Intracellular receptors are located in the cell's
cytoplasm. - ANSWER -Receptors in each
family are classified by their location in the body. What role do the ligands involved in endocrine
signaling serve in the body. - ANSWER -
Hormones are the ligands involved in endocrine
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