Science/Scientific Method
A possible answer to a scientific question that can be proven false.
What is a hypothesis?
What is the advantage of studying living things in their natural setting?
A natural setting shows what actually occurs in nature; not disrupted by the lab setting.
This is anything that has mass and takes up space
What is mass?
Glycogen, starch, and cellulose are all examples of what macromolecule?
Carbohydrates
What are the substances that start a chemical reaction?
The reactants
A broad explanation that is widely accepted as true because it is supported by a great deal of evidence
What is a scientific theory?
This characteristic of living things involves maintaining a steady state in their internal environment.
What is homeostasis?
This is pure substance that can't be broken down into other substances.
What is an element?
Proteins contain which four elements?
carbon
hydrogen
oxygen
nitrogen
What is the definition of an enzyme?
An enzyme is a protein that speeds up a chemical reaction.
The variable in a study that is manipulated by the researcher to investigate its effect on the dependent variable.
What is an independent variable?
These are the basic units of structure of all living things.
What are cells?
The difference in charge between the different parts of the same molecule
polarity
What two components make up the building blocks of lipids?
glycerol and fatty acids
All chemical reactions need this type of energy to get started.
What is activation energy?
Name two assumptions about science
scientific ideas are open to revision
sound scientific ideas withstand a test of time
science cannot prove answers to all questions
List three characteristics of all living things
responds to the environment
grows and develops
produces offspring
maintains homeostasis
complex chemistry
consists of cells
What type of substance has a pH less than 7?
An acid
Which level of structure of a protein gives it a 3 dimensional shape?
The tertiary structure
List two unique properties of water.
Relatively high boiling point
water molecules stick together
water has a low density
it is a polar molecule
List three steps of the scientific method
Make an observation
Ask a question
form a hypothesis
test the hypothesis
draw a conclusion
communicate results
What is the levels of organization of (inside) an individual?
cells, tissue, organs, organ systems, organism
A substance with a pH of 9 is ten times more ______ than a substance with a pH of 8
Basic/Alkaline
A pair of nucleotides that bond together is called:
What type of reaction result in the release of energy?
An exothermic reaction.