In a normal curve, what percent of the data can be found within +/- 1 standard deviation of the mean?

The purpose of looking at the slide of the letter E is:
to practice focusing the microscope
to determine how the lenses change the appearance of specimens

The term array as used in Lab 5 refers to:
a group of measurements listed in a column from highest to lowest

In a normal curve, what percent of the data can be found within +/- 1 standard deviation of the mean?
68.3%

What is the median of the following array? {9, 7, 6, 4, 4, 2}
5

What is the median of the following array? {15, 4, 2, 2}
3

What is the deviation for the mode in this array? {78, 67, 55, 40, 40}, mean = 56
-16

The blank cuvette is just like a sample cuvette except
it contains no solutes

On the spectrophotometer, the “% Transmission” scale is a measure of
how much light passed through the sample

What must be done every time the spectrophotometer is set to a new wavelength?
slope the machine

On the spectrophotometer, the "% Transmission" scale is a measure of
how much light passed through the sample
how much of the light coming from the lamp hit the detector

If % transmission is high for a given sample, then
absorbance will be low

The generation time of bacteria
occurs during the exponential growth phase
is the time it takes for the population to double
occurs during the log phase

As the population of bacteria increases
absorbance increases
optical density increases

In the Evaluating Substrate Utilization exercise
iodine is an indicator for starch
amylase is an enzyme

In the chemical reaction where starch is broken down, catalyzed by the enzyme amylase,
the substrate is starch
the reactant is starch

What will happen if less than 3 ml of sample is used in the spectrophotometer?
some of the light beam will pass through the air above the sample
the absorbance readings will be too low

Osmotic pressure is
greater when the concentration gradient is greater
highest where the concentration is highest