28. When a cell makes a cell membrane bound growth factor that binds to receptors on neighboring cells causing them to proliferate, this is an example of A) contact-dependent signaling. B) autocrine signaling. C) endocrine signaling. D) paracrine signaling. E) direct intercellular signaling.

12. Which of the following are the final by-products of glucose oxidation during aerobic cell respiration? A) carbon dioxide only B) heat only C) both ATP and heat only D) ATP, heat, and carbon dioxide E) ATP only

A four current-carrying conductor in a raceway needs to be adjusted. What is the percent of value as adjusted for ambient temperature?

Find the resistance of a piece of 6 AWG tungsten wire that is 450 ft long. Assume a temperature of 20°C.

     The double arrow in this reaction indicates that it is   in equilibrium. Polar hydrogen bonded. hydrophobic 

Which structural class of neuron is found in the retina of the eye? 

27. The addition of a strong acid like HCl to an aqueous solution would result in A) an increase in pH. B) the release of H+ into the solution. C) both the release of H+and a decrease in pH. D) both the release of H+ and an increase in pH. E) a decrease in pH.

14. Which of the following are produced during the citric acid cycle? A) a proton gradient B) ATP and NAD+ C) pyruvate, ATP and NADH D) ATP, NADH, and FADH2 E) oxygen

Metformin is a member of the biguanide group and is used to treat type 2 diabetes.

10. Select all the macromolecules that make up and maintain living organisms. A) carbohydrates B) proteins C) amino acids D) lipids E) nucleic acids F) vitamins G) nucleic acids, proteins, lipids carbohydrates