BIO 231 EXAM 1 COPY FOR FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS

____ is anatomy and _____ is physiology CORRECT ANSWER Structure; function Which of the following lists examples of body structures from the simplest to the most complex? CORRECT ANSWER Keratin, mitochondrion, keratinocyte cell, epithelial layer, integumentary system Negative feedback loops are _____ CORRECT ANSWER homeostatic mechanisms During childbirth, the pressure against the cervix stimulates the release of a hormone which strengthens contractions, further increasing pressure against the cervix. This is an example of what type of feedback system? CORRECT ANSWER Positive What two organ systems function in extrinsic regulation of homeostasis? CORRECT ANSWER Nervous and endocrine The most superficial wall of the pleural cavity (closest to the ribcage) is lined by the _____, whereas the outer surface of the lungs is covered by the _____. CORRECT ANSWER parietal pleura; visceral pleura The thymus, spleen, and tonsils are principal organs of the _____ system. CORRECT ANSWER Lymphatic Which of the following conditions would require energy? CORRECT ANSWER Blood flowing from an area of low pressure to high pressure Membrane proteins that bind to signals by which cells communicate are called CORRECT ANSWER receptors Most transmembrane proteins have _____ regions facing the intra- and extracellular fluid, and _____ regions embedded in the phospholipid bilayer. CORRECT ANSWER hydrophilic; hydrophobic The plasma membrane of cells lining the small intestine has ____, which are specialized for absorption of nutrients. CORRECT ANSWER microvilli The gonads produce steroids, which