Who conducted the famous "imprinting" experiment on geese?
A. Raven
B. Mendel
C. Russel
D. Darwin
E. Lorenz
Answer: E
You might also like to view...
Researchers discovered an enzyme in HIV called protease. Once the enzyme's structure was known, researchers began looking for drugs that would fit into the active site and block it
HIV is the virus that causes AIDS. In the mid-1990s, A) vaccination B) denaturation C) allosteric regulation D) competitive inhibition
All of the following events occur during T-dependent activation of a B cell EXCEPT
A. an antigenic fragment held within an MCH Class II molecule of a dendritic cell binds to a specific T cell receptor on a naïve T-helper cell. B. specific cytokines from the T helper cells stimulate maturation and complete activation of the antigen-stimulated B cell. C. antigen within MCH class II molecule is presented by B cell to an activated T helper cell. D. antigen binds to specific B cell receptor molecules. E. antigen bound to the B cell receptor is internalized and transferred to an MHC class II molecule which then moves to the plasma membrane. F. There are no exceptions. All of these events occur during T-depedent activation of B cells.
Gastrulation is the process by which an embryo becomes three-layered. Indicate whether the statement is true or false
A substance that increases the concentration of H+ is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).