lab report 1

The initial pH of distilled water is close to 1 (highly acidic).

False

A substance with a pH of 7 would be considered

Neutral

A substance with a pH of 2 would be considered

acidic

Changes in pH can damage or destroy cellular processes

True

The regulation of pH by cells is accomplished primarily through ___

Buffers

In the function of buffer simulation as you added acid to the distilled water

The pH decreased

Cytoplasm acts as a buffer, keeping the intracellular environment at a neutral pH.

True

buffers always act to lower the pH of solutions

False

In order to come to reliable conclusions about pill bug preferences, you needed to use the __

Scientific method

When utilizing the scientific method, there are two types of variables they are

Dependent and independent

When graphing your data, it is important that you

Place the independent variable on the X axis

In the pillbug experiment, your hypothesis

Was related to the environment Pill bugs prefer

In the pill bug experiment, the substance used as the control was

SAND

In the pill bug experiment, an important part of the experimental strategy was to

Make observations at regular intervals

According to the results of the pill bug experiment

Pill bugs tend to prefer cornstarch over sand

In the pill bug experiment, it is important that measurements be taken twice once I’m beginning of the experiment and once at the end of the experiment

FALSE

When preparing your experiment for a laboratory exercise how many substance or conditions should you test at a time?

One

When pill bugs are placed in a choice chamber, which of the following behaviors indicates a preference for the test substance?

Pill bug spend more time in chamber with test substance

How is the control group treated in a scientific experiment?

The control group receives all the same treatments except the experimental variable

What is the purpose of a control group in a scientific experiments?

The control group undergoes standard or no treatment, and serves as a baseline for a group receiving an experimental treatment.