This variable is the one that is often manipulated, or chosen by the scientist
What is the independent variable?
100
This stain is used to highlight starch in plant cells
What is iodine
100
Enzymes are biological molecules that belong to this class of macromolecules
What is protein?
100
Our study of bacteria involved the preparation of these a few days before any staining was done.
What are infusions?
100
Chemists use this substance to test whether something is an acid or a base
What is an indicator?
200
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle. Identify the dependent variable
What is the time it took to finish the puzzle?
200
Observation of a typical animal cell would reveal this organelle as it's outermost layer.
What is cell membrane?
200
The environmental condition that we manipulated in our investigation using liver
What is temperature?
200
This technique colors the entire cell and is generally used to make the shape and structure of cells visible
What is simple staining?
200
The strength of the pH scale is measured by the concentration of this positively charged ion.
What is hydrogen (H+)?
300
This variable usually responds to any changes made by the scientist and is often the one being measured
What is the dependent variable?
300
Animal cells are best stained with this stain to highlight the nucleus
What is methylene blue?
300
This enzyme has a role in breaking down hydrogen peroxide into water and oxygen and is found in all cells.
What is catalase?
300
_____________ stains are used to classify and identify bacteria as either Gram positive or Gram negative
What is differential stain?
300
Using a pH probe (tool to measure something, in this case pH) you find that tap water has a pH of 7.06. With this reading, you can determine that tap water would be classified as this on the pH scale
What is neutral?
400
An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of nails were used. The number of paper clips the electromagnet could pick up was measured. Identify the independent variable
What is the different size nails
400
A _______________ is made by placing water on a specimen before placing a cover slip.
What is wet mount?
400
Enzymes work to lower this, and as a result help metabolic processes to happen faster.
What is activation energy?
400
This step was critical to ensure our specimens weren't rinsed off during any of the rinse steps
What is heat fixing or passing through an open flame?
400
Understanding acids and bases is important because it helps to maintain this delicate balance in all living systems
What is homeostasis?
500
You are interested in testing if the height that a ball is dropped will impact the height that it bounces. Design a way to test this.
What is answers may vary........be prepared to share yours!
500
You look through two different microscopes and observe different cell types. In both examples, the cells are surrounded by a membrane, have a distinct nucleus, and other membrane bound organelles. These are characteristics of this cell type.
What is eukaryotic
500
A graph that shows the effect of temperature on enzymatic activity would look like this:
Be sure to label each axes
What is answers may vary.......be prepared to share yours!
500
You look through a microscope and you notice a number of rod-shaped, purple specimens. How would you classify these cells?
What are prokaryotic, gram positive bacilli or bacillus?
500
This substance is very important in helping to resist a shift in pH when an acid or base is added to a solution