Scientific Method
Water Properties
Macromolecules
All Inclusive
Organic Molecules
100
This is the factor in an experiment that the scientist changes on purpose.
What is the independent variable
100
What two elements make up a water molecule? (no symbols)
Hydrogen (2) and oxygen
100
If carbon has an atomic number of 6. How many valance electrons will it have?
4 (four) valence electrons
100
On the pH scale 0-14 Water is considered to be Neutral, What number is water represented by.
7
100
A monosaccharide is which type of organic molecule?
Carbohydrate
200
The third step in the scientific method when the scientist makes an educated guess at the answer to their research question.
What is the hypothesis?
200
The oxygen molecule found in water has what kind of charge?
Slightly negative
200
What are the 2 (TWO) functions of this macromolecule?
Main source of energy and structural support
200
A phospholipid is a type of lipid that surround the membrane of a cell. What are the two main monomers that make up a lipid?
Glycerol and fatty acid
200
This image represents which type of organic molecule?
Nucleic Acid or Nucleotide
300
Identify the Dependent Variable:
Joe wants to see how tall his bean plants will grow with different amounts of fertilizers. He plants four bean plants. One with no fertilizer and the other three with different amounts of the fertilizer.
Height of the bean plants
300
Why does Ice float on top of water?
Because ice is less dense
300
Almost all enzymes are which type of macromolecule?
proteins
300
The energy needed for a reaction to start in side of your body is the?
Activation energy
300
What is the monomer for a nucleic acid?
Nucleotide
400
This would be the independent variable in the following research question. Does getting more sleep help to improve students grades in Mr. McDonald's class?
What is amount of sleep?
400
Water is considered to be a polar molecule. What does it mean to be a polar molecule?
A Polar Molecule (having a positive and negative charge)
400
Fatty Acids and glycerol are too lipids as amino acids are too what?
Proteins
400
Which two organic macromolecules provide ENERGY for an organism?
Carbohydrates and Lipids
400
Based on the graph at what temperature does the enzyme work best at?
40 degrees (give or take 5 degrees)
500
True or False: For an experiment to be considered valid, it should be tested multiple times, by multiple scientists and the same result should occur every time.
True
500
What property of water allows mammals to maintain a relatively constant internal temperature, even when the external temperature is over 100 degrees or below 0 degree?
High Specific Heat or Specific Heat
500
DNA is a nucleic acid, that is made up of millions of nucleotides and stores an organism's genetic information. What is the function of RNA, another form of a nucleic acid?
to make/ synthesis proteins
500
Capillary Action is when water goes against gravity due to 2 properties of water, it is what allows plants to bring water from the roots of the plant through the xylem and to the leaves. What are the 2 properties of water that cause this to happen?
Adhesion and Cohesion
500
What is the function of an enzyme?
To increase the speed of a reaction by lowering the energy needed (answer should be similar to this)