The two elements that make up water.
What is hydrogen and oxygen?
The bond that joins two elements together.
What is a chemical bond?
Name the four macromolecules.
What are carbohydrates, lipids, proteins, and nucleic acids?
______ cells don't have a nucleus.
What is prokaryotic?
Having a constant internal environment.
What is homeostasis?
Polar molecules are called hydro____.
What is philic?
The second shell of an atom holds this amount of electrons.
What is 8?
Glucose is an example of a ________.
What is a monosaccharide?
Name one example of a prokaryotic cell.
What are bacteria or archaea?
(1 of the 2)
A molecule that has regions that are different charges.
What is polar?
The weakest bond.
What is a hydrogen bond?
The strongest type of bond.
What is a covalent bond?
Phospholipids have this many fatty acid tails.
What is 2?
Name one example of a eukaryotic cell.
What are green algae, brown algae, plants, amoeba, fungi, or animals?
(1 of the 6)
A branch of chemistry that has to do with carbon-containing molecules.
What is organic chemistry?
Name 4 properties of water.
What is polarity, cohesion, adhesion, capillary action, hydrogen bonding, high specific heat, universal solvent, density, facilitates chemical reactions.
(4 of the 9)
Carbon has an ability to bond with as many as __ other elements.
What is 4?
_____ bonds hold amino acids together.
What is peptide?
True or False
Prokaryotic cells are larger than Eukaryotic cells.
What is false?
False science.
What is pseudoscience?
True or False
Cohesion is stronger in water than in any other liquid.
What is true?
True or False
Electrons on the first electron shell have the lowest energy.
What is true?
Nucleotides make up this.
What is DNA?
All living things are made up of cells that share a common _________
What is ancestor?
Small changes in the features of population over time.
What is natural selection?