This is an MCQ-based quiz for GRE on the topic of Proteins and Receptors.
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.
An amino acid monomer at neutral pH will be found in what form?
What is the name of the bond that links amino acids together in protein primary structure?
What level of protein structure is determined only by hydrogen bonds?
Toll-like receptors (TLRs) are known for their role in innate immunity in humans and in many other organisms. How do these receptors induce downstream signaling to induce an innate immune response?
Once a G-protein coupled receptor (GPCR) has bound to its ligand, which of the following steps allows the subunit to dissociate from the receptor and trigger downstream cascades?
Paracrine signaling refers to which type of cell signaling?
Which of the following is an example of the secondary structure of a protein?
The linear sequence of amino acids in a protein determines its __________ structure.
Ionic bonds, disulfide bridges, hydrogen bonds and hydrophobic interactions are all examples of protein __________ structure.
None of these
Hemoglobin is a protein that consists of four subunits: two copies of the and two copies of the subunit. How many individual polypeptide chains are present in a fully folded molecule of hemoglobin?