Blog

When you complete a Virtual Lab simulation on Connect, you can download a PDF of your lab report or print it to study for future lab exams (like this one).

Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 12.43 ounces and a standard deviation of 0.04 ounce. Find the probability that the bottle contains fewer than 12.33 ounces of beer.

Is the following statement true or false?  If it is false, what is wrong with it? RNA polymerase creates a complimentary copy of the coding strand of DNA.

The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will take between 2.0 and 4.5 minutes to find a parking spot in the library lot.

For a neuron or muscle cell, Na+ ions are more concentrated in this fluid compartment.

If you put blood into a test tube containing a 100 mOsM glucose solution, what would you expect to observe with a microscope in terms of the red blood cell appearance/structure? Type the best and most specific technical term into the blank below:

Solve the problem.The size of the bear population at a national park increases at the rate of per year. If the size of the current population is 108, find how many bears there should be in 5 years. Use and round to the nearest whole number.

Gregor Mendel found that the phenotypic ratio of a monohybrid cross was always 3:1.  How did this prove that genetic factors are inherited as particles and not as a blend of parental traits?

Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log3(x + 1) = 2

In 1999 the stock market took big swings up and down. A survey of 983 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio daily? Express your answer as a decimal rounded to three decimal places.