Characteristics of Living Things
Properties of Water
Solutions & Suspensions
Macromolecules
Miscellaneous
100

What is the study of life called?  

Biology 

100

Water molecules are _____________ because there is an uneven distribution of charges. 

Polar

100

What are mixtures of water and undissolved materials called? 

Suspensions 

100

How many valence electrons does Carbon have? 

Four 

100

When do we use "if, then" statements in science? 

When creating a hypothesis 

200

All living things are made of ___________

Cells 

200

What kind of charge does an oxygen atom have in a water molecule? 

Negative 

200

The pH scale ranges from ___________________, with ________ being neutral.

0-14, 7 is neutral 

200

What kind of bonds does carbon form with elements such as oxygen, phosphorus, and sulfur? 

Covalent 

200

In DNA, cytosine pairs with guanine, and thymine pairs with ____________. 

Adenine 

300

Cells are in ____________________ if they maintain a relatively stable internal environment. 

Homeostasis 

300

The attraction between a hydrogen atom of one water molecule and the oxygen atom of another molecule is called a _____________.

Hydrogen bond 

300

What is a solution that has more OH- ions called?

Base 

300

What are the monomers for carbohydrates, nucleic acids, and proteins? 

Monosaccharides, nucleotides, and amino acids 

300

What is the indicator for starch called?  

Iodine

400

All living things respond to changes in their environment, what are these changes called? 

Stimuli 

400

What causes water molecules to come together and produce surface tension? 

Cohesion 

400

A weak acid or base called a ________________ interacts with strong acids or bases to prevent a sudden change in pH. 

Buffer

400

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. 

400

What is another word for basic?  

Alkaline 

500

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 

500

What property does adhesion create that causes water to rise against the force of gravity in very small spaces?  

Capillary action

500

Which will have a lower concentration of H+ ions, bleach or orange juice? 

Bleach 

500

A nucleotide has three parts: a 5-carbon sugar, a nitrogenous base, and __________________.

A phosphate group

500

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)