Scientific Method
DOUBLE JEOPARDY:What is the first step of scientific investigation?
Observation/Asking a Question
Which variable is intentionally changed?
Independent Variable
All living things are made of ______.
Cells
What is the smallest unit of matter?
Atom
Which macromolecule provides quick energy?
Carbohydrates
Enzymes are biological ______.
Catalysts
What is a testable explanation for an observation?
Hypothesis
Which variable is measured?
Dependent Variable
Living things use ______ to carry genetic information.
DNA
DOUBLE JEOPARDY: What type of bond forms when electrons are shared?
Covalent Bond
Which macromolecule stores long-term energy?
Lipids
What molecule does an enzyme act upon?
Substrate
What type of data uses numbers?
Quantitative
DOUBLE JEOPARDY: Why do scientists include constants?
To ensure a fair test
DOUBLE JEOPARDY: What is homeostasis?
Maintaining stable internal conditions
Why is water considered polar?
Unequal sharing of electrons
Which macromolecule is made of amino acids?
Proteins
What happens when an enzyme denatures?
Its shape changes and it no longer functions properly.
What is the difference between an observation and an inference?
Observation = what you see; Inference = explanation
What is the purpose of a control group?
Provides a comparison
Why do populations evolve instead of individuals?
Evolution occurs across generations
What pH is considered neutral?
7
DNA belongs to which macromolecule?
Nucleic Acids
DOUBLE JEOPARDY: What does catalase break down?
Hydrogen Peroxide
Why can scientific theories change over time?
New evidence can improve explanations.
A student tests fertilizer by changing sunlight and water at the same time. Why is this a poor experiment?
More than one independent variable.
Name four characteristics shared by all living things.
Any four: cells, DNA, growth, reproduction, metabolism, response, homeostasis, evolution.
How do buffers help organisms?
Maintain stable pH.
DOUBLE JEOPARDY: Match the monomer: Protein, Carbohydrate, Nucleic Acid.
Amino Acid, Monosaccharide, Nucleotide
Explain why increasing temperature eventually decreases enzyme activity.
The enzyme denatures and the active site changes shape.