The letter “F” from the above figure represents
a. complement.
b. MHC markers with antigen expressed to the
surface of a cell.
c. lysosome fusing with a phagosome.
d. plasma membranes fusing.
e. MHC recycling.
Answer: b
You might also like to view...
Which of the following statements is FALSE?
A. Chemical reactions proceed more quickly at higher temperatures. B. Chemical reactions progress at a faster rate when the reacting particles are present in higher numbers. C. Larger particles move faster than smaller ones and thus collide more frequently and more forcefully. D. Catalysts increase the rate of chemical reactions, sometimes while undergoing reversible changes in shape.
Which of the following organisms best describes a catalase-negative, gram-positive coccus that is hemolytic on sheep blood agar, and bacitracin positive?
a. Streptococcus pyogenes b. Streptococcus pneumoniae c. Staphylococcus epidermidis d. Micrococcaceae spp.
The recognition of a chemical signal by a receptor protein in the membrane is most similar to ____
a. mRNA specifying the sequence of amino acids in a polypeptide b. binding of a specific substrate to the active site of an enzyme c. turning on gene transcription d. allosteric regulation of proteins e. an enzyme requiring a specific optimum pH and temperature for activity
A molecule that stimulates an immune system reaction by B cells and T cells is termed a(n)
A. antibody. B. antigen. C. substrate. D. phagocyte. E. complement protein.