Biology 12

Unit 1 Review • MHR 101 (c)oxygen is present (d)glyceraldehyde-3-phosphate (PGAL) is phosphorylated (e)all the co-enzyme A is us ...

102 MHR • Unit 1 Metabolic Processes 39.How is the sodium-potassium pump important to cells? 40.Outline glycolysis in terms of p ...

Unit 1 Review • MHR 103 COMMUNICATING 55.Use structural formulas to draw one polar molecule and one non-polar molecule. Explain ...

UNIT 2 Homeostasis In 1775, Dr. Charles Blagden of the Royal Society of London tested the human body’s ability to withstand heat ...

105 ...

CHAPTER 4 Reflecting Questions Homeostatic Mechanisms 106 As shown in the photograph on the opposite page, some people live in e ...

107 Chapter Contents 4.1 Feedback Systems 108 4.2 The Kidney 112 MiniLab: The Effect of Salt Concentration 115 Design Your Own I ...

4.1 Feedback Systems 108 MHR • Unit 2 Homeostasis EXPECTATIONS Describe and explain homeostatic processes at work in the body an ...

Chapter 4 Homeostatic Mechanisms • MHR 109 Human body temperature is also an example of dynamic equilibrium. However, homeostasi ...

5 4 3 2 1 effectors (sweat; vasodilation) receptor (skin) integrator (hypothalamus of the brain) effectors (goose bumps; shiveri ...

Chapter 4 Homeostatic Mechanisms • MHR 111 stability. For cells, tissues, and organisms that require constant conditions to func ...

4.2 The Kidney 112 MHR • Unit 2 Homeostasis Humans have two fist-sized kidneys, which are found in the lower back on either side ...

Chapter 4 Homeostatic Mechanisms • MHR 113 Another waste product found in the blood is uric acid, which is usually produced by t ...

114 MHR • Unit 2 Homeostasis down the ureters. These sections are shown to the left of Figure 4.10. Within the cortex and medull ...

MINI LAB The Effect of Salt Concentration Common table salt (NaCl) is an important component of cells and the fluids that surrou ...

116 MHR • Unit 2 Homeostasis HO 2 H+ HO 2 solutes collecting duct capillary network drugs creatinine glucose amino acids Bowman’ ...

Chapter 4 Homeostatic Mechanisms • MHR 117 Urine Output The permeability of the distal tubule and collecting duct is controlled ...

SKILL FOCUS Hypothesizing Initiating and planning Performing and recording Analyzing and interpreting Communicating results Inve ...

Checking the Plan 1.What are your dependent and independent variables? What are your controlled variables? 2.What will be your c ...

120 MHR • Unit 2 Homeostasis SECTION REVIEW Draw the shape of a nephron found in human kidney tissue. Label the four major sect ...