What is the study of life called?
Biology
Water molecules are _____________ because there is an uneven distribution of charges.
Polar
What are mixtures of water and undissolved materials called?
Suspensions
How many valence electrons does Carbon have?
Four
When do we use "if, then" statements in science?
When creating a hypothesis
All living things are made of ___________
Cells
What kind of charge does an oxygen atom have in a water molecule?
Negative
The pH scale ranges from ___________________, with ________ being neutral.
0-14, 7 is neutral
What kind of bonds does carbon form with elements such as oxygen, phosphorus, and sulfur?
Covalent
In DNA, cytosine pairs with guanine, and thymine pairs with ____________.
Adenine
Cells are in ____________________ if they maintain a relatively stable internal environment.
Homeostasis
The attraction between a hydrogen atom of one water molecule and the oxygen atom of another molecule is called a _____________.
Hydrogen bond
What is a solution that has more OH- ions called?
Base
What are the monomers for carbohydrates, nucleic acids, and proteins?
Monosaccharides, nucleotides, and amino acids
What is the indicator for starch called?
Iodine
All living things respond to changes in their environment, what are these changes called?
Stimuli
What causes water molecules to come together and produce surface tension?
Cohesion
A weak acid or base called a ________________ interacts with strong acids or bases to prevent a sudden change in pH.
Buffer
Which two macromolecules store energy, and which one is the main energy source?
Carbohydrates and lipids. Carbohydrates are used as the main energy source for living things.
What is another word for basic?
Alkaline
Proteins can have different levels of structure, and at each level they can do something different. What characteristic of life is this an example of?
Structure and function
What property does adhesion create that causes water to rise against the force of gravity in very small spaces?
Capillary action
Which will have a lower concentration of H+ ions, bleach or orange juice?
Bleach
A nucleotide has three parts: a 5-carbon sugar, a nitrogenous base, and __________________.
A phosphate group
Mr. Greenawalt decided to do a pH test on his black coffee this morning. Approximately where on the pH scale would it be?
5, (4-6 okay)