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Bio110 Chapter 2
Basic Chemistry
Question | Answer |
---|---|
The parts of an atom | Proton, Neutron, and Electron |
Neutrally charged particle of an atom | Neutron |
Positively charged particle of an atom | Proton |
Negatively charged particle of an atom | Electron |
The particles contained in the atom's nucleus | Protons and Neutrons |
The particles in the outer shell of an atom | Electrons |
First outer shell of an atom can contain ____ electrons | two |
The second outer shell of an atom can contain ____ electrons | eight |
The third outer shell of an atom can contain ____ electrons | eight |
Non-ion atoms are _________ charged | neutrally |
Atomic number is equal to the number of | protons |
Atomic weight is the average mass of | protons + neutrons |
Substances made up of one type of atom is called an | element |
Two or more atoms bonded together is called a | Molecule |
H stands for | Hydrogen |
C stands for | Carbon |
N stands for | Nitrogen |
O stands for | Oxygen |
Na stands for | Sodium |
Mg stands for | Magnesium |
K stands for | Potassium |
Ca stands for | Calcium |
Cu stands for | Copper |
Zn stands for | Zinc |
P stands for | Phosphorus |
S stands for | Sulfur |
Cl stands for | Chlorine |
Fe stands for | Iron |
I stands for | Iodine |
The connection of two or more atoms is called a | Bond |
A force or attraction between positive and negative electrical charges that keeps two or more atoms closely associated with each other to form a molecule | Chemical Bond |
A bond formed by sharing electrons | Covalent Bond |
A bond formed by the loss of one or more electrons by one atom and the gain of the electrons by another atom | Ionic Bond |
A charged atom is called- | an Ion |
Ions with a positive charge | Cations |
Ions with a negative charge | anions |
An aqueous solution is | Water |
The break up of molecules in an aqueous solution is called | Ionization |
Ionization is also called | Dissociation |
A covalent bond formed between two atoms of sulfur | Disulfide Bond |
When Hydrogen is covalently bonded to another atom it has a slightly positive charge allowing it to form __________bonds | Hydrogen Bonds |
The chemical reaction that requires energy and bonds molecules to one another to make a new compound | Synthesis |
The chemical reaction that breaks bonds and releases energy is called | Decomposition |
Water is considered a solvent because | Solutes dissociate in water |
A lubricant reduces | Friction |
Intracellular Fluid (ICF) | Water within cells |
Extracellular Fluid (ECF) | Water outside the cell |
Water found in blood vessels is called | Plasma |
Water found in Lymphatic vessels is called | Lymph |
Interstitial Fluid | Water found between cells |
Synovial Fluid, Cerebrospinal Fluid, Aqueous Humor are all examples of | Specialized Fluids |
The biological useful energy that is released by the reactions of cell respiration is called | ATP (Adenosine triphosphate) |
This element is important in cell respiration | Oxygen |
The waste product of cell respiration | Carbon Dioxide (CO2) |
Energy production within cells is called | Cell Respiration |
The necessary substances needed in very small amounts in the body are called | Trace Elements |
A substance that increases the concentration of H+ ions in water | Acid |
A substance that decreases the concentration of H+ ions in water | Base (Alkaline) |
Has the effect of increasing OH- ions in water | Base (Alkaline) |
pH stands for | Parts Hydrogen |
This number is neutral on the pH scale | Seven |
The numbers below seven on the pH scale are considered | Acids |
The numbers above seven on the pH scale are considered | Bases or Alkalines |
The range of pH for blood is | 7.35-7.45 |
The chemical or pair of chemicals that minimize changes in pH | Buffer System |
Must contain Carbon AND Hydrogen | Organic Compounds |
The four major organic compound groups are | Carbohydrates, Lipids, Proteins, and Nucleic Acids |
Carbohydrates are a main _________ _________ in the body | Energy source |
Carbohydrates are sugars classified as | Monosaccharides, disaccharides, oligosaccharides, and polysaccharides |
A monosaccharide are also called | Simple sugars such as Glucose, fructose, and galactose. Containing only one sugar carbohydrate |
A disaccharide is a _________-sugar carbohydrate | Double |
A Oligosaccharide contains ___-___ sugars linked by covalent bonds | 3-20 |
Antigens are | Markers on cell membranes |
A polysaccharide is ____________ sugar molecules | Many or Thousands |
Starches are glucose storage in | Plants |
The form of glucose storage in animals is called | Glycogen |
Fiber is another name for | Cellulose |
Lipids are also called | Fats |
The three types of lipids are | True fat, phospholipids, and steroids |
True fats contain 1, 2, or 3 fatty acids and a __________ molecule | Glycerol |
A monoglyceride is a glycerol with __ fatty acid | One |
A Diglyceride is a glycerol with ___ fatty acids | Two |
A Triglyceride is a glycerol with ___ fatty acids | Three |
A True fat with all carbons bonded to the maximum number of hydrogens is considered to be | A saturated fat |
A saturated fat is _______ at room temperature | Solid |
A saturated fat usually comes from _______ fats | Animal |
A true fat with one or more carbons double bonded is considered to be | Unsaturated |
Unsaturated fats are _______ at room temperature | Liquid |
An unsaturated fat usually comes from _______ fats | Plant |
An unsaturated fat that is converted to saturated is called | Hydrogenated or trans fats |
This kind of fat has been linked to atherosclerosis | Hydrogenated/trans fats |
Diglycerides with a phosphate group attached in the 3rd bonding site are called | Phospholipids |
Phospholipids are the structural component of the ________ and also in ________ around nerve cells | Cell membrane, myelin |
Estrogen, Progesterone, and Testosterone are examples of | Steroids |
Steroids are made from | Cholesterol |
Cholesterol is converted to ________ in the liver | Bile salt |
Cholesterol is required for your body to produce __________ in the skin with UV light | Vitamin D |
Amino Acids are what make up | Proteins |
There are __ amino acids | 20 |
Amino acids are bonded by | Peptide bonds |
A chain of amino acids is called a | polypeptide |
Amino acids your body cannot make and therefore must take in are called | Essential Amino Acids |
Enzymes, hormones, hemoglobin, and anitbodies are made of | Protein |
A protein that has lost its shape/function is said to be | Denatured |
Proteins are affected by ______ and pH (acidosis) | Heat |
A protein that is a catalyst is called an | Enzyme |
A __________ speeds up a reaction without the need for heat | Catalyst |
What are the 3 nucleic acids | DNA (deoxyribonucleic acid), RNA (ribonucleic acid), and ATP (adenotriphophate) |
DNA is a _______ helix strand | Double |
The bases for DNA are Adenine, Guanine, Cytosine, and __________ | Thymine |
Thymine always pairs with | Adenine |
Guanine always pairs with | Cytosine |
DNA makes up our chromosomes which is our | Genetic Code |
RNA bases are Adenine, Guanine, Cytosine, and ________ | Uracil |
In RNA Adenine bonds with | Uracil |
ATP contains Adenine, ribose and 3 __________ groups | Phosphate |
ATP is the basic form of ________ in the body | Energy |
ATP is made during | Cell respiration |
RNA is a _______ strand of nucleotides | Single |
Carbon always forms ________ bonds | Covalent |
Salts, acids, and bases are all formed by ______ bonds | Ionic |
Dissociation releases _____ for other reactions | Ions |
Covalent bonds are not weakened in | Aqueous Solutions |
The three-dimensional shape of proteins and nucleic acids is maintained by __________ bonds | Hydrogen |
Water is cohesive due to ______ bonds | Hydrogen |
A change brought about by the formation (synthesis) or breaking (dissociation) of chemical bonds is called a | Chemical Reaction |
60%-75% of our bodies is made up of | Water |
The energy producing process of cells is called | cell respiration |