Questions 11-13 refer to possible functions of membrane proteins (depicted below
ID: 260692 • Letter: Q
Question
Questions 11-13 refer to possible functions of membrane proteins (depicted below) EXTRACELLULAR SPACE CYTOSOL 1 2 4 11. Depicted above are the four major functional classes of membrane proteins. Each class is marked with a number between 1 and 4. Which of the following choices lists the correct order of functional classes of membrane proteins: a. enzyme (marked with 1), receptor (marked with 2), anchor protein (marked with 3), transporter (marked with 4) b. anchor protein (marked with 1), receptor (marked with 2), enzyme (marked with 3), transporter (marked with 4) c. transporter (marked with 1), enzyme (marked with 2), anchor protein (marked with 3), receptor (marked with 4) d. transporter (marked with 1), anchor protein (marked with 2), receptor (marked with 3), enzyme (marked with 4) 12. The protein marked with #2 is able to bind long fibril-like molecule both on the inside and outside of the cellular membrane. The molecules that are bound on the inside of the cell are most likely part of the: a. Nuclear membrane b. cellular cortex c. centrosone d. signaling cascade 13.What type of transport structure does #1 depict? a. a channel b. a carrier c. receptor d. none of the aboveExplanation / Answer
Introduction:
The proteins or the part of proteins which work together with the biological membranes are known as Membrane proteins. They consist of the integral proteins molecules which are eternally a part of the membrane or anchored to the membrane and the peripheral proteins which are usually found attached to the membrane lipid bilayer or to some of the integral proteins molecules.
Explanation:
These carry out a range of functions essential to the continued existence of organisms.
1. Membrane transporter ( marked with 1) proteins shift the ions and molecules through the membrane. Therefore, these are usually classified according to the Transporter categorization catalog.
2. Cell adhesion or the anchor (marked with 2) molecules permit the cells to categorize one another and interrelate. Such as the proteins takes part in the immune response.
3. Receptor (marked with 3) type of membrane proteins transmit signals among the internal and external surroundings of the cell.
4. Membrane enzymes (marked with 4) include most of the activities like hydrolase, transferase, or oxidoreductase. These proteins play vital roles as the enzymes, receptors or transporter.
Therefore, according to the given image of membrane proteins Choice d is showing the correct sequence or order of functional classes of membrane proteins.
Ans: Choice d
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