Atoms and Interactions
Water
Diffusion
Life Molecules
Review
100
The center of an atom.
What is the nucleus?
100
Does water have a high or low boiling point?
What is high?
100
The net movement of particles from an area of higher concentration to an area of lower concentration.
What is diffusion?
100
The smaller subunits that make up nucleic acids.
What are nucleotides?
100
Atoms of the same element with different numbers of neutrons.
What are isotopes?
200
All of the chemical reactions that occur within an organism.
What is metabolism?
200
A molecule with an unequal distribution of charge.
What is a polar molecule?
200
An increase in ______will cause more rapid movement of particles and increase the rate of diffusion.
What is temperature?
200
A protein that changes the rate of a chemical reaction.
What is an enzyme?
200
A very strong base might have this pH.
What is 12-14?
300
An atom of fluorine has 9 electrons. It's second energy level has this many electrons.
What is 7?
300
Water dissolves many ionic and molecular compounds because of this.
What is polarity?
300
When there is no difference in concentration of a substance from one area to another this has been reached.
What is dynamic equilibrium?
300
Unlike carbohydrates and lipids, proteins contain this element.
What is nitrogen?
300
A mixture in which one or more substances are distributed evenly in another substance.
What is a solution?
400
This type of bond is formed when two atoms share electrons, such as hydrogen and oxygen in water.
What is a covalent bond?
400
Water __________ when it freezes.
What is expands?
400
Name one thing that will speed up diffusion?
What is increased temperature or increased pressure?
400
The total number of atoms in a molecule of sucrose, C12 H22 O11 is this.
What is 45?
400
Glucose and fructose, both with the formula C6 H12 O6 differ in this.
What is the arrangement of atoms?
500
A substance that forms hydrogen ions in water is this.
What is an acid?
500
The attraction of opposite charges between hydrogen and oxygen forms a weak bond called this.
What is a hydrogen bond?
500
What is moving WITH the concentration gradient?
What is moving from areas of high to low concentration?
500
Name the three things that make up a nucleic acid.
What is a phosphate group, sugar, and nitrogenous base?
500
Which of these is NOT made up of proteins? Hair, enzymes, fingernails, cellulose
What is cellulose?
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