Scientific Method & Lab Safety
The step of the scientific method where you make an educated guess about the outcome of an experiment.
What is a hypothesis?
The macromolecule which provides quick energy.
What are carbohydrates?
The smallest unit of life.
What is a cell?
The type of feedback loop that maintains homeostasis by reversing a change.
What is negative feedback?
If you were to get a chemical in your eye you would use this safety equipment.
What is the eyewash station?
This acronym stands for the six main elements that make up macromolecules in living things.
What is CHONPS (Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur)?
A group of similar cells that work together to perform a function.
What is a tissue?
The type of feedback loop that increases the original stimulus.
What is positive feedback?
The variable that is measured in an experiment.
What is the dependent variable?
The macromolecule that stores genetic information.
What are nucleic acids (DNA/RNA)?
Put these in order from smallest to largest: organ, organism, tissue, organ system, cell.
Cell → Tissue → Organ → Organ system → Organism
When you get too hot, you sweat. This is an example of this kind of feedback.
What is negative feedback?
The factor in an experiment that is changed.
What is the independent variable?
The monomers of proteins.
What are amino acids?
This process allows cells with the same DNA to develop into different types with specialized functions, like muscle cells or nerve cells.
What is cell specialization (or differentiation)?
Blood clotting is an example of this kind of feedback.
What is positive feedback?
The safety equipment you should use if a small fire starts at your lab station.
The type of lipid that makes up most of the cell membrane.
What are phospholipids?
These unspecialized cells can divide and develop into many different types of specialized cells. They are used in growth, repair, and development.
What are stem cells?
Explain how insulin and glucagon work together to regulate blood sugar (feedback loop).
When blood sugar is high, insulin lowers it by moving glucose into cells; when blood sugar is low, glucagon raises it by releasing glucose from storage.