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A patient is considered to have AIDS at the point when the CD4+ count drops below what threshold?

What vessel is used for intravenous injections in mice?

In this class, students may turn in all work late with no penalty.

If the testing shows that antibodies to the HIV virus are present in the blood, this indicates?

You are sedating a 225g rat with acepromazine and midazolam.  The stock concentration of acepromazine is 10 mg/ml and the stock concentration of midazolam is 50 mg/ml.  You will use, however, diluted concentrations as follows: 0.1% acepromazine solution and 1% midazolam solution.  The doses for rats are: 0.5mg/kg acepromazine and 2mg/kg midazolam.  Round to the hundreths place for all equations. A. You first need to make up 5 ml of each diluted solution.  For both acepromazine and midazolam, determine how much stock solution is needed to make 5ml of the desired diluted solution.  How much sterile diluent will you need for each? answer example: X ml of stock acepromazine; X ml of sterile diluent                                        X ml of stock midazolam; X ml of sterile diluent   B.  Using the diluted solutions, now calculate the volume of each drug you will draw up in your syringe to dose the rat safely.  Remember to watch your units! answer example: X ml of diluted acepromazine solution                                        X ml of diluted midazolam solution

Bonus question (1pt possible): What is a dead zone?

When should you write predictions, within the scientific method?

I ran an experiment to test a new type of diet pill. I only gave the pills to one person and compared them to another person who got no pills. What important part of experimentation have I failed to do?

Removes waste anesthetic gas from the breathing circuit: ________________

Many people say that certain colors affect your mood. Some people even carefully plan the colors they paint on the walls in their home in an attempt to create an environment that puts them in a certain mood, such as calm (purple) or energized (orange). To test this idea, Sasha visited 15 doctor’s offices. She painted the waiting rooms in 5 of them blue, she painted 5 of them red, and she painted another 5 green. Afterwards, she had the doctor’s offices give surveys to every patient after they had been in the waiting room for 10 minutes. The surveys asked the patients to circle words that represent how they are feeling. The options included: calm, distressed, energized, joyful, frustrated, content, and bored. What is one controlled variable?