A small molecule that specifically binds to another molecules and transmits chem
ID: 98006 • Letter: A
Question
A small molecule that specifically binds to another molecules and transmits chemical information is called: A) A Signal Transducer B) A Polymer C) A Kinase D) A ligand E) None of the above Membrane bound receptors transmit chemical information to the inside of the cell by: A) Co-transport B) Anti-transport C) Enzyme activity D) Changing their shape E) All the above Signal transduction to turn on cellular functions is usually carried out by what type of enzymes cascade? A) Kinase B) Alkalase C) Protease D) lsomerase E) Oxidase cAMP has an important role as: A) An energy molecule B) As a second messenger in Signal Transduction C) As a molecule involved in making Glucose D) As an electron carrier in the Electron Transport System E) All the above Signal Transduction pathways often include all the following EXCEPT: A) A trans-membrane receptor protein B) A G-Protein C) A series of Kinase enzymes D) Production of a small molecule used as a second signalExplanation / Answer
Question 1
Answer : option D) ligand------- CORRECT ANSWER
signal transducer : In signal transduction, transmission of molecular signals from a cell's exterior to its interior
hence option A ---------IS NOT THE CORRECT ANSWER
A polymer CAN BE REFERRED AS macromolecule of many repeated subunits
hence option B ---------IS NOT THE CORRECT ANSWER
Kinase: IT IS A enzyme that adds phosphate groups (PO 43) to other molecules.
hence option C ---------IS NOT THE CORRECT ANSWER
Question2
Answer : option D) Changing their shape------- CORRECT ANSWER
Co-transport , --it tefers to two substances are simultaneously transported across a membrane
hence option A ---------IS NOT THE CORRECT ANSWER
antiporter ------------ called exchanger or counter-transporter) is a cotransporter.
hence option B ---------IS NOT THE CORRECT ANSWER
Enzyme activity
hence option C ---------IS NOT THE CORRECT ANSWER
Question 3
Answer : option A) Kinase: -------- CORRECT ANSWER
IT IS A enzyme that adds phosphate groups (PO 43) to other molecules.
The signal transduction systems are mediated by protein (serine/threonine) kinases and/or phosphatases.
Alkalase: liquid enzyme preparation containing a protease
hence option B ---------IS NOT THE CORRECT ANSWER
Protease: this enzyme that performs proteolysis;
hence option C ---------IS NOT THE CORRECT ANSWER
Isomerase; an enzyme which catalyses the conversion of a specified compound to an isomer
hence option D ---------IS NOT THE CORRECT ANSWER
Oxidase: this enzyme that catalyzes an oxidation-reduction reaction
hence option E ---------IS NOT THE CORRECT ANSWER
Question 1
Answer : option D) ligand------- CORRECT ANSWER
signal transducer : In signal transduction, transmission of molecular signals from a cell's exterior to its interior
hence option A ---------IS NOT THE CORRECT ANSWER
A polymer CAN BE REFERRED AS macromolecule of many repeated subunits
hence option B ---------IS NOT THE CORRECT ANSWER
Kinase: IT IS A enzyme that adds phosphate groups (PO 43) to other molecules.
hence option C ---------IS NOT THE CORRECT ANSWER
Question2
Answer : option D) Changing their shape------- CORRECT ANSWER
Co-transport , --it tefers to two substances are simultaneously transported across a membrane
hence option A ---------IS NOT THE CORRECT ANSWER
antiporter ------------ called exchanger or counter-transporter) is a cotransporter.
hence option B ---------IS NOT THE CORRECT ANSWER
Enzyme activity
hence option C ---------IS NOT THE CORRECT ANSWER
Question 3
Answer : option A) Kinase: -------- CORRECT ANSWER
IT IS A enzyme that adds phosphate groups (PO 43) to other molecules.
The signal transduction systems are mediated by protein (serine/threonine) kinases and/or phosphatases.
Alkalase: liquid enzyme preparation containing a protease
hence option B ---------IS NOT THE CORRECT ANSWER
Protease: this enzyme that performs proteolysis;
hence option C ---------IS NOT THE CORRECT ANSWER
Isomerase; an enzyme which catalyses the conversion of a specified compound to an isomer
hence option D ---------IS NOT THE CORRECT ANSWER
Oxidase: this enzyme that catalyzes an oxidation-reduction reaction
hence option E ---------IS NOT THE CORRECT ANSWER
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