What is a variable?

A. A statement that explains a phenomena and can be tested.

B. An educated guess used in an experiment.

C. Something that must be kept constant in an experiment.

D. A value or characteristic that can take different values.

How are slides held in place on a microscope?

Which algea is responsible for main oxygen supply for the atmosphere

Describe facilitated diffusion of ions through the channel proteins

What was the first ever human body cell to be discovered

Genes can be involved with controlling expression of other genes during developments. Some of which, like the hox genes, code for transcription factors that regulate when other genes are expressed.

What are some examples and non examples of chemical bonding?

Match the staining techniques with their purpose. A Negative stain such as India ink or Congo red. B The Gram stain C The Ziehl-Neelsen Acid-fast stain D Simple stain with a basic dye E The Schaeffer-Fulton Endospore stain Stain microbes a bright

Sandy puts a paper clip on the table and puts a magnet near the paper clip. The paper clip begins to move. What type of forces are acting on the paper clip?

Which statement is an example of absolute age? 1) Dinosaurs lived a long time ago 2) Trilobites lives before dinosaurs 3) Teachers are old 4) Dinosaurs went extinct 65.5 million years ago

Identify the structure in the cell that will produce atp from the starch building blocks