Biopotentials Quiz 1

What is an action potential?

• potential due to movement of electron

• A rapid change in the membrane potential of an excitable cell

• A type of protein found in muscle cells

• A type of renewable energy source

Explain the concept of membrane potential.

• The difference in electric potential between the interior and exterior of a cell membrane.

• Membrane potential is the process of breaking down nutrients within a cell membrane.

• Membrane potential refers to the number of organelles within a cell membrane.

• The membrane potential is the movement of water across a cell membrane.

What is the Nernst potential and how is it related to biopotentials?

• The Nernst potential is the amount of neurotransmitters released at a synapse and has no connection to biopotentials

• The Nernst potential is the equilibrium potential for a particular ion across a membrane. It is related to biopotentials as it contributes to the generation of action potentials in excitable cells.

• The Nernst potential is the energy stored in a battery and has no relation to biopotentials

• The Nernst potential is the speed at which nerve impulses travel and is not related to biopotentials

Describe the concept of diffusion potential in the context of biopotentials.

• The electrical potential difference created across a membrane due to the unequal distribution of ions.

• The generation of electrical potential due to the presence of a magnetic field

• The movement of electrical potential from an area of high concentration to an area of low concentration

• The transfer of electrical potential through direct physical contact

Explain the significance of the electrode-skin interface in biopotential measurements.

• It is where the skin color is analyzed

• It is where the electrical signals from the body are picked up by the electrodes.

• It is where the electrodes are attached to the skin

• It is where the body temperature is measured

How does the resting membrane potential differ from the action potential?

• They are exactly the same

• They differ in their function and characteristics.

• They both occur in the same type of cells

• They are both involved in muscle contraction

Discuss the role of ion channels in generating and propagating action potentials.

• Ion channels have no role in changing membrane potential

• Ion channels are only involved in the production of hormones

• Ion channels allow the flow of specific ions across the cell membrane, leading to changes in membrane potential.

• Ion channels are only found in non-excitable cells

How do biopotentials play a role in medical diagnostics and research?

• Biopotentials are not reliable for providing information about the body's electrical activity

• Biopotentials are only used for entertainment purposes

• Biopotentials play a role in medical diagnostics and research by providing valuable information about the body's electrical activity.

• Biopotentials have no role in medical diagnostics and research

in 1791 what experiment of Luigi Galvani brought the understanding of Biopotential

• Gold foil experiment

• Dead frog experiment

• dead cockroach experiment

• Silver foil experiment

What is the difference between Atom and ION?

• No difference they are same

• they differ in Mass

• they differ in atomic number

• Atom are neural and Ions are charged particle