Types of Membrane Proteins quiz Flashcards

Membrane proteins mark a cell for identification, helping cells distinguish one cell from another.

Membrane proteins anchor the cell cytoskeleton to the extracellular matrix (ECM).

Membrane proteins serve as receptors for signaling molecules, allowing for bio signaling to take place.

Membrane proteins help with the transport of molecules across the cell membrane.

Membrane proteins can connect cells via protein linkages, forming cell junctions.

Membrane proteins can serve as enzymes to speed up chemical reactions.

The mnemonic 'RATTLE' can help remember the functions: Recognition, Anchorage, Transduction, Transport, Linkage, Enzymes.

A concentration gradient is a difference in the concentration of a substance between two areas.

It means the molecule is moving from an area of high concentration to an area of low concentration, requiring no energy.

It means the molecule is moving from an area of low concentration to an area of high concentration, requiring energy.

Active transport involves membrane proteins moving molecules against their concentration gradient, requiring energy.

Membrane proteins that function as enzymes lower the activation energy needed for chemical reactions.

ATP provides the energy required for membrane proteins to move molecules against their concentration gradient.

Passive transport does not require energy and moves molecules down their concentration gradient, while active transport requires energy to move molecules against their concentration gradient.

Facilitated diffusion is a type of passive transport where membrane proteins help move molecules across the cell membrane without energy.

The two main types of membrane proteins are integral membrane proteins and peripheral membrane proteins.

Integral membrane proteins are embedded within the cell membrane and usually span the entire phospholipid bilayer.

Peripheral membrane proteins are found on the periphery of the biological membrane and do not span the membrane like integral membrane proteins.

Peripheral membrane proteins can be located on either the extracellular side or the intracellular side of the biological membrane.

Membrane proteins are used for transducing signals from the environment into the cell.

The ribosome is responsible for synthesizing proteins.

Membrane proteins are utilized for anchoring the cell cytoskeleton and the extracellular matrix.

Membrane proteins are utilized for marking cells for recognition, allowing cells to identify each other.

Integral membrane proteins span the entire phospholipid bilayer, integrating into the cell membrane.

Yes, peripheral membrane proteins can be found on the intracellular side of the biological membrane.

Integral membrane proteins are embedded within the membrane, while peripheral membrane proteins are located on the membrane's surface.

Membrane proteins facilitate active transport by moving substances across the cell membrane against their concentration gradient.

Membrane proteins help maintain homeostasis by regulating the movement of substances in and out of the cell.

Membrane proteins function in cell signaling by acting as receptors that transmit signals from the external environment to the cell's interior.

In the fluid mosaic model, membrane proteins are interspersed within the phospholipid bilayer, contributing to the dynamic nature of the cell membrane.