EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which are functions of membrane proteins?
A
Hormone binding sites and DNA replication
B
Cell adhesion and translation
C
Cell to cell communication and protein pumps
D
Passive transport and glycolysis
Explanation: 

Detailed explanation-1: -Membrane proteins mediate processes that are fundamental for the flourishing of biological cells. Membrane-embedded transporters move ions and larger solutes across membranes, receptors mediate communication between the cell and its environment and membrane-embedded enzymes catalyze chemical reactions.

Detailed explanation-2: -Membrane proteins serve a range of important functions that helps cells to communicate, maintain their shape, carry out changes triggered by chemical messengers, and transport and share material.

Detailed explanation-3: -Membrane proteins can serve a variety of key functions: Junctions – Serve to connect and join two cells together. Enzymes – Fixing to membranes localises metabolic pathways. Transport – Responsible for facilitated diffusion and active transport.

Detailed explanation-4: -Receptors are generally transmembrane proteins, which bind to signaling molecules outside the cell and subsequently transmit the signal through a sequence of molecular switches to internal signaling pathways.

Detailed explanation-5: -They receive chemical messages from other cells called signaling molecules. When these molecules bind with the proteins in the cellular membrane they trigger a change in the protein, which then sends that message into the cell and activates a specific cellular response.

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