Answer the following questions true (T) or false (F)
1. Isotype switching of antibodies is beneficial because some pathogens are able to alter their antigens.
2. A patient with a high antibody titer to a pathogen for which there is no vaccination indicates that this person is currently infected with the pathogen or was infected in the past.
3. Artificial immunity is characterized by short-lived protection immune protection because the patient is not making their own memory cells or antibodies.
1. FALSE
2. TRUE
3. FALSE
You might also like to view...
A ________ is the organelle that fuses with endosomes and supplies hydrolytic enzymes necessary for the digestion of the materials within the endosome.
Fill in the blank(s) with the appropriate word(s).
Where can you find ATP synthase in a plant cell?
a. in the thylakoid membrane only b. in the mitochondrial inner membrane only c. both the thylakoid and inner mitochondrial membranes d. only in the nucleus e. embedded in the plasma membrane
What type (or types) of reactions can a ribozyme catalyze?
a. protein synthesis, but only with other proteins to assist in the process (like in a ribosome) b. protein synthesis in the absence of other proteins c. RNA splicing d. protein synthesis, but only with other proteins to assist in the process (like in a ribosome) and RNA splicing e. protein synthesis in the absence of other proteins and RNA splicing
Which cellular structure specializes in making ATP?
a. Golgi body b. Lysosome c. Chloroplast d. Plastid e. Mitochondria