Bio 201 Exam 1 (NAU) (Williams) Questions and Answers well Explained Latest 2024/2025 Update 100% Correct.

Which of the following is an example of positive feedback control? - An increase in uterine contractions from oxytocin secretion in labor Which of these has the highest H+ concentration? - Stomach secretions, pH= 2.3 Which of the following molecules is a buffer in your extracellular fluid? - HCO3- Metabolism is the sum of _______ and ____________. - Anabolism; Catabolism We live in an ever changing environment outside of our body, yet our internal conditions remain relatively stable. This is called________________? - Homeostasis An educated speculation or a possible answer to a question that can be tested is called a(n) ______________. - Hypothesis What does the term hypernatremia mean? - High Sodium concentration A protein that is bound to a carbohydrate is called a ___________. - Glycoprotein The covering of body surfaces and the lining of body cavities is composed of ______________ tissue. - Epithelial Rapid diffusion of oxygen and carbon dioxide through the air sacs (alveoli) of the lungs takes place through ______________ epithelium. - Simple squamous Most kidney tubules are made of ____________ epithelial tissue, which is specialized for absorption and secretion. - Simple cuboidalA patient was severely dehydrated, losing a large amount of fluid. The patient was given intravenous fluids of normal saline. Normal saline is __________ to your blood cells and is about ___________NaCl. - Isotonic; 0.09% The plasma membrane of cells lining the small intestine has ____________, which are specialized for absorption of nutrients. - Microvilli Which of the following lists levels of human structure from the most complex to the simplest? - Organ system, organ, tissue, cell, organelle A red blood cell is placed in a hypertonic solution. This means the concentration of solutes in the solution is _________ than the concentration of solutes in the intracellular fluid, and will cause the cell to ________. - Greater, shrink Some simple columnar and psuedostratified columnar epithelia have ____________ cells, which produce a protective mucous coating over the mucous membranes. - Goblet Epinephrine is a hormone that stimulates cell response to stress, therefore is the first messenger. which of the following is the effect of its second messenger, cAMP? - Activates kinases