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