Answer the following statements true (T) or false (F)
1. The photoreceptor cells are sensitive to damage from light.
2. Both the cornea and the lens are vascular.
3. The optic disc is the location where the optic nerve leaves the eyeball.
4. Sour taste receptors are stimulated by hydrogen ions of acidic food substances.
5. The fluid contained within the membranous labyrinth is called perilymph.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE
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Cholesterol is a required component of cell membranes
Indicate whether this statement is true or false.
Porcine proliferative enteropathy causes which of the following?
A) respiratory disease B) diarrhea C) ileitis D) villous destruction
Which of the following is false concerning neutrophils?
A) less abundant than lymphocytes B) can make cytotoxic chemicals C) can exit capillaries D) can destroy bacteria E) produced in the bone marrow
What is "allosteric modulation"?
A. The fact that all binding sites on a protein must be occupied to have a biological effect B. The ability of a single ligand-binding site to bind to molecularly similar ligands C. Regulation of physiological functions by the sympathetic division of the autonomic nervous system D. The change in the shape and functional state of a protein that occurs when a ligand binds to a regulatory site E. Modification of the functional state of a protein by temperature or pH