Describe how the Lac operon regulates expression of the lac genes when the bacteria is grown on media containing lactose and when the bacteria is grown on media containing glucose.

  Use the setup in the picture to answer the following questions: A. In this experiment phenol red was used as a pH indicator. What does the color of test tube A tell you about the pH of the solution present in this tube? B. If all three test tubes were exposed to light for 30 minutes, would you expect the color of the solution present in test tube D to change? Explain.

How many five card poker hands contain 3 spades and 2 diamonds?

A defense contractor in Huntsville posted a new job opening in the analytics division. There were 83 applicants for the position. The hiring manager collected the following information about the applicants’ experience in computer programming, accounting, and marketing: 42 have computer programming experience.30 have accounting experience.37 have marketing experience.12 have experience in both computer programming and accounting.13 have experience in both computer programming and marketing.17 have experience in both accounting and marketing.4 have experience in all three areas.

A. Which plant group is the most evolved?     B. Why have angiosperms become the most species rich plant group?

You and your friends are going to Waffle House at 2:00 in the morning. You have decided to order hashbrowns with 6 different toppings. How many different ways could you order your hashbrowns if they have 8 different toppings to choose from?

Which patient statement indicates that the nurse’s teaching about sublingual nitroglycerin (Nitrostat) has been effective?

  A. Is the plant in the picture a monocot or dicot? How can you tell?     B. Based on your answer, what kind of roots would you expect this plant to have?

A. What kind of leaf venation does the plant at your station have? B. Based on the venation (and anything else you can see), what kind of root system would this plant most likely have?

Dylan is presenting  an experiment  at the Youth fair. He wanted to find out which color of light causes the plant Brassica rapa to grow the tallest. A. State Dylan’s Null Hypothesis   B. Would he reject or fail to reject his null hypothesis according to the data on the graph above? Explain.