Unit 19 Blood Lab Report-1

4. Calcium Hydroxide Solution (Lime Water) and olive oil are used because an emulsifying agent is formed in situ when these 2 solutions are agitated together. What is the emulsifying agent that is formed? a. calcium succinate b. calcium oleate c. succinic hydroxide d. palmitic hydroxide

See picture. Any idea what these would look like?

A college student who has been feeling fatigue decides to take an energy-boosting supplement advertised on a television infomercial and endorsed by a professional athlete. She reports feeling more energetic after taking the supplement but later discovers the supplement is only made of salt. What did the student experience?     A. The effectiveness of the energy supplement working in her body   B. The placebo effect; the student believing the supplement was working to increase energy   C. An increase in nerve conduction caused by the salt tablet   D. An increase in blood pressure

What is the purpose of formaldehyde in embalming fluid? a. it acts as a surfactant b. it acts as a preservative c. it acts as a vehicle d. it acts as a buffer

2. The role of hormones in the body is to a. regulate body temperature. b. serve as a chemical messenger. c. store energy. d. catalyze chemical reactions. e. transport key molecules.

The balance of water in the body takes into account the intake of food, liquids and: a. the hydrogen bridges that makes water b. the temperature of the food c. metabolic reactions d. the degree of oxygen saturation in the body

17. When drugs are absorbed into the body and then eliminated, a graph of concentration in the body vs. time will have the general shape shown at right. Using a drug with a slower elimination rate will Absorption 0.9 0.8 Elimination 0.7 0.6 the area 0.5 under the curve. 0.4 A. decrease 03 B. increase 0.2 C. not change 0.1 20 30 40 50 60 70 Time Concentration

Which of the following statements is not true?   a. It is okay to taste a chemical   b. No food or drink, including water, is allowed in laboratory   c. Read and re-read labels on containers of chemicals before opening them   d. Dispose the chemical waste to appropriate waste container

1. Did the slime pick up water soluble or water insoluble inks in? From these results, what can you conclude about the polarity of slime molecules? Explain. 2. Explain how you determined your hypothesis about whether or not the slime would pick up water soluble inks. What scientific information did you incorporate to formulate the hypothesis? Was your hypothesis correct?

Why does scratching the side of the flask with a spatula help form crystals? a. The scratch provides a nucleation site for crystal growth to start.  b. The spatula is made of iron, which helps crystallization. c. Crystals can form on the spatula surface. d. The spatula cools the solution, aiding recrystallization.