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Chap2 Study Guide
Questions from Chapter 2
Question | Answer |
---|---|
The subunits of elements are...... | Atoms |
The atomic number is the number of........... in an atom's nucleus | Protons |
A mixture of solute dissolved in a solvent is called a...... | Solution |
Blood has a pH of 7.35-7.45. Gastric juice has a pH of about 2.0. The more alkaline fluid is...... | Blood |
Proteins that catalyze metabolic reactions are called.... | Enzymes |
A simple carbohydrate such as glucose. | Monosaccharide |
A complex carbohydrate such as glycogen. | Polysaccharide |
An important component of cell membranes. | Phospholipids |
Examples include DNA, RNA, and ATP. | Nucleotide |
The basic building block of protein. | Amino Acid |
What type of mixture is red blood cells "floating" in plasma? | Suspension |
What is the most abundant compound in the body? | Water |
Which compound releases ions when in solution? | Electrolyte |
Which substance releases a hydrogen ion when dissolved in water? | Acid |
Which element is found in all organic compounds? | Carbon |
What are three types of particles found in atoms? | Protons, Neutrons, and Electrons |
Which type of chemical bond is formed by an exchange of electrons? | Ionic |
Which type of chemical bond is formed by a sharing of electrons? | Covalent |
What happens when a electrolyte goes into a solution? | It separates into charged particles called ions (cations and anions) |
What is a molecule? | Two or more atoms that make up chemical substances. |
What is a compound? | Substances that contain molecules formed by different elements. |
What is a buffer? | A substance that maintains a steady pH of a solution. |
What word is used to describe isotopes that give off radiation? | Raidoisotope |
What element is the basis of organic chemistry? | Carbon |
What are the three main categories of organic compounds? | Carbohydrates, Lipids, and Proteins |
What is an enzyme? | Proteins that are essential for metabolism. |
What is a nucleotide, and what compounds are made of nucleotides? | Contains a sugar, a phosphate group, and a nitrogenous base. DNA, RNA, and ATP. |
Created by:
Jessica Venyke