Receptors and Messengers
Über den Vortrag
Der Vortrag „Receptors and Messengers“ von Kevin Ahern, PhD ist Bestandteil des Kurses „Physikum Komplettkurs“. Der Vortrag ist dabei in folgende Kapitel unterteilt:
- Receptors
- Receipt of Message
- Second Messengers
Quiz zum Vortrag
Which statement regarding hormone receptors is true?
- They change shape when binding occurs.
- They are always membrane bound.
- They change shape on binding to another receptor.
- They require co-factors to be stimulated.
- They are specific to a single type of substance.
Which statement regarding second messengers is true?
- They use covalent interactions to modify proteins.
- They use hydrogen interactions to modify proteins.
- They carry messages out of cells.
- They use van der Waals forces to modify proteins.
What acts as a second messenger inside the cell? Select all that apply.
- Inositol-1, 4, 5-triphosphate
- Deoxyribose nucleic acid
- cAMP
- cGMP
- Ca+2 ions
What kind of modification occurs during the communication of signals via the second messenger molecules in the case of non-steroid hormones?
- Covalent changes in protein molecules.
- Hydration of protein molecules.
- Dehydration of protein molecules.
- Conversion of triple bonds to double bonds between the 2 carbon atoms of a protein molecule.
- Conversion of triple bonds to single bonds between the 2 carbon atoms of a protein molecule.
Which statement regarding phospholipase C is true?
- An activated phospholipase C enzyme catalyzes the breakdown of the PIP2 molecule to IP3 and DAG.
- Phospholipase C protein acts as a second messenger that directly stimulates the gene expressions by binding with the DNA molecules.
- Phospholipase C protein acts as a second messenger molecule for the synthesis of PIP2 from DAG and IP3.
- Phospholipase C acts as an energy source for the transduction of extracellular response toward the Golgi apparatus.
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Dozent des Vortrages Receptors and Messengers
Kevin Ahern, PhD
Dr. Kevin Ahern is a Professor in the Department of Biochemistry and Biophysics at Oregon State University (OSU), USA.
He obtained his PhD in Biochemistry from Oregon State University. Currently, he teaches courses for health sciences students at OSU.
He is co-author of three Open Educational electronic textbooks on Biochemistry and a Guide to Getting Into Medical School.
Due to his achievements, he earned OSU’s highest teaching recognition, the Elizabeth P. Ritchie Distinguished Professor Award in 2017.
Within Lecturio, Dr. Ahern teaches courses on Biochemistry and on "How to Get into Medical School”.
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Thank you Dr. Kevin Ahern!!! Sometimes you speak so fast, but these time was perfect :)
