Scientific Method
Identify the part of the scientific method below:
It has been hypothesized the there will be more plastic in the ocean than fish by the year 2050.
hypothesis
What are the two types of reproduction?
sexual (egg and sperm) and asexual (cloning)
What is the chemical formula for water?
H2O
List the four classes of macromolecules.
carbohydrates, lipids, proteins, and nucleic acids
Enzymes typically end in the suffix
-ase
Identify the dependent variable:
150 gallons of water can pump through a fire hose each minute.
amount of water that is pumped
All living things are made of
cells
What is the difference between an element and a compound?
An element is a pure substance that cannot be broken down. A compound is a substance made of different atoms bonded together.
All macromolecules are composed of the same three elements. List all three.
CHO: Carbon, hydrogen, oxygen
What is the function of a carbohydrate?
short term energy
A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
experiment
Gradual change in a population over a long period of time
evolution
Protons have what type of charge?
positive
Enzymes are a type of which macromolecule?
proteins
What is the function of a lipid?
Long term energy
Identify the step in the scientific method:
Does Pantene (which is a commercial hair product) affect the speed of hair growth?
ask a question
Explain the difference between biotic and abiotic
biotic - living (or was once living)
abiotic - nonliving
What is the difference between adhesion and cohesion?
Cohesion makes water molecules stick to each other, whereas adhesion allows water to stick to other substances.
The monomer of a protein.
amino acids
What is the monomer of a nucleic acid?
nucleotide
Mrs. Buckridge wants to know if her students are more productive in her class with the lights on or off. How should she test for this?
Answers may vary.
Provide an example of how the human body maintains homeostasis.
blood pressure, body temperature, pH, oxygen levels, etc.
What is capillary action?
Allowing water to travel upwards against gravity like in plant stems.
What are the two types of nucleic acids?
DNA and RNA
Enzymes act as biological catalysts to _____ a chemical reaction.
a. speed up
b. slow down
c. make more product
SPEED UP!