54. In humans, the follicular cells that remain behind in the ovary following ovulation become__________. (A) the ovarian endometrium that is shed at the time of the menses (B) a steroid-hormone synthesizing structure called the corpus luteum (C)the thickened portion of the uterine wall (D) the placenta, which secretes cervical mucus

2.Which is the description about an allosteric interaction between a ligand and a protein? (A) binding of a molecule to a binding site affects binding of additional molecules to the same site (B) binding of a molecule to a binding site affects binding properties of another site on the protein (C) binding of the ligand to the protein is covalent (D) multiple molecules of the same ligand can bind to the same binding site (E) two different ligands can bind to the same binding site

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