| A | B |
| cholesterol | This is the starting substance for making the hormones estrogen and testosterone. |
| lactose | It is an example of a disaccharide. |
| RNA | It has uracil as one of its nucleotides. |
| enzymes | The lock and key mechanism helps explain how this protein functions. |
| DNA | This nucleic acid has a double helix structure. |
| phospholipids | Cholesterol and this lipid can be found in the cell membrane. |
| collagen | It is an example of a structural protein. |
| phospholipid | It is a lipid with a water-attracting and water-repelling part of its molecule. |
| DNA | It has thyamine as one of its nucleotides. |
| glucose | It is an example of a monosaccharide. |
| triglycerides | Contains 3 fatty acids and a molecule of glycerol. |
| enzymes | This acts as a chemical catalyst. |
| glycogen | This is an example of a polysaccharide. |
| cholesterol | This is the steroid lipid. |
| Acid | Higher percentage of hydrogen ions; Low pH |
| Alkaline | Another word for basic. |
| Aqueous Solution | Solution of solutes dissolved in water. |
| Atom | The smalllest particle of a pure substance. |
| Atomic Mass | The sum of the protons and neutrons in an atom. |
| Atomic Number | The number of protons in an atom. |
| Base | Higher percentage of hydroxide ions; Higher pH. |
| Carbohydrate | Stored energy. |
| Compound | Substances made of more than one kind of element. |
| Covalent | Bond between atoms in which electrons are shared. |
| Dehydration Synthesis | Formation of large molecules by removing water from smaller molecules. |
| Dissociation | Separation of ions as they dissolve in water. |
| Double Helix | The double spiral shape of DNA. |
| Electrolyte | Substance that dissociates to form ions in water. |
| Electron | Negatively charged subatomic particle if an atom. |
| Element | Composed of one type of atom. |
| Energy Level | Electrons are found her, orbiting the nucleus of an atom. |
| Enzyme | Allows chemical reactions to take place without being used in the reaction. |
| Glycogen | Polysaccharide made up of monosaccharides; Starch. |
| Hydrolysis | Reaction breaking large molecules to smaller ones by removing water. |
| Inorganic Compound | Molecules without carbon-carbon or carbon-hydrogen bonds. |
| Ionic Bond | Occurs when electrons are lost or gained and the ions formed are attracted to one another. |
| Lipid | Organic molecule formed of glycerol and fatty acids. |
| Matter | Anything thea has mass and takes up space. |
| Molecule | Composed of atoms. |
| Neutron | Subatomic particle with no charge found in the nucleus of an atom. |
| Nucleic Acid | Used to build DNA and RNA. |
| Nucleus | Central core of an atom made of protons and neutrons. |
| Organic Compound | Molecules containing carbon-carbon and/or carbon-hydrogen bonds. |
| Peptide Bond | Bond that links amino acids to form proteins. |
| pH | Mathematical expression of relative concentrations of hydrogen and hydroxide ions. |
| Protein | Folded strands of amino acids. |
| Proton | Positively charged subatomic particle found in the nucleus of an atom. |
| Solute | Substance that dissolves in water. |
| Solvent | Substance in which solvent dissolve. |
| Lock and Key Model | Proein recptors bind with substances to initiate changes in the cell. |
| Ion | Atom that has lost or gained electrons and now holds a charge. |
| Organization | is an outstanding characteristic of body structure |
| THE BODY | IS A UNIT CONSTRUCTED OF THE FOLLOWING SMALLER UNITS |
| CELLS | THE SMALLEST STRUCTURAL UNITS, ORGANIZED OF VARIOUS CHEMICALS |
| TISSUES | ORGANIZATIONS OF SIMILIAR CELLS |
| ORGANS | ORGANIZATIONS OF DIFFERENT KINDS OF TISSUES |
| SYSTEMS | ORGANIZATIONS OF MANY KINDS OF ORGANS |
| ANATOMICAL POSITION | STANDING ERECT WITH THE ARMS AT THE SIDES AND PALMS TURNED FORWARD |
| ANATOMICAL DIRECTIONS | SUPERIOR, INFERIOR, ANTERIOR, POSTERIOR, MEDIAL, LATERAL, PROXIMAL, DISTAL, SUPERFICIAL, DEEP |
| SUPERIOR | TOWARD THE HEAD, UPPER, ABOVE |
| INFERIOR | TOWARD THE FEET, LOWER, BELOW |
| ANTERIOR | FRONT, IN FRONT OF, SAME AS VENTRAL IN HUMANS |
| POSTERIOR | BACK, IN BACK OF SAME AS DORSAL IN HUMANS |
| MEDIAL | TOWARD THE MIDLINE OF A STRUCTURE |
| LATERAL | AWAY FROM THE MIDLINE OR TOWARD THE SIDE OF THE STRUCTURE |
| PROXIMAL | TOWARD OR NEAREST THE TRUNK, OR NEAREST THE POINT OF ORIGIN OF A STRUCTURE |
| DISTAL | AWAY FROM OR FARTHEST FROM THE TRUNK, OR FARTHEST AWAY FROM A STRUCTURE'S POINT OF ORIGIN |
| SUPERFICIAL | NEARER THE BODY SURFACE |
| DEEP | FARTHER AWAY FROM THE BODY SURFACE |
| PLANES OR BODY SECTIONS | SAGITTAL, MIDSAGITTAL, FRONTAL, TRANSEVERSE |
| SAGITTAL PLANE | LENGTHWISE PLANE THAT DIVIDES A STRUCTURE INTO RIGHT AND LEFT SECTIONS |
| MIDSAGITTAL PLANE | SAGITTAL PLANE THAT DIVIDES THE BODY INTO TWO EQUAL HALVES |
| FRONTAL (CORONAL) PLANE | LENGTHWISE PLANE THAT DIVIDES A STRUCTURE INTO ANTERIOR AND POSTERIOR SECTIONS |
| TRANSVERSE PLANE | HORIZONTAL PLANE THAT DIVIDES A STRUCTURE INTO UPPER AND LOWER SECTIONS |
| BODY CAVITIES | VENTRAL, ABDOMINOPELVIC |
| VENTRAL CAVITY CONTAINS | THE THORACIC CAVITY AND THE ABDOMINALOPELVIC CAVITY |
| THE DORSAL CAVITY CONTAINS | CRANIAL AND THE SPINAL CAVITY |
| THORACIC CAVITY CONTAINS | THE MEDIASTINUM AND THE PLEURAL CAVITIES |
| MEDIASTINUM | MIDPORTION OF THORACIC CAVITY, HEART AND TRACHEA ARE LOCATED IN THE MEDIASTINUM |
| PLEURAL CAVITIES | RIGHT LUNG LOCATED IN RIGHT PLEURAL CAVITY, LEFT LUNG IS IN LEFT PLEURAL CAVITY |
| ABDOMINOPELVIC CAVITY | ABDOMINAL CAVITY, PELVIC CAVITY, ABDOMINOPELVIC REGIONS |
| ABDOMINAL CAVITY | CONTAINS STOMACH, INTESTINES, LIVER, GALLBLADDER, PANCREAS, AND SPLEEN |
| PELVIC CAVITY CONTAINS | REPRODUCTIVE ORGANS, URINARY BLADDER, AND THE LOWEST PART OF INTESTINE |
| DORSAL CAVITY | CONTAINS CRANIAL CAVITY AND THE SPINAL CAVITY |
| CRANIAL CAVITY | CONTAINS BRAIN |
| SPINAL CAVITY | CONTAINS SPINAL CORD |
| AXIAL REGION | CONTAINS HEAD, NECK AND TORSO OR TRUNK |
| APPENDICULAR REGION | CONTAINS UPPER AND LOWER EXTREMITIES |
| HOMEOSTASIS | RELATIVE CONSTANCY OF THE INTERAL ENVIRONMENT |
| THE BODY USES | NEGATIVE FEEDBACK LOOPS AND LESS OFTEN POSITIVE FEEDBACK LOOPS TO MAINTAIN OR RESTORE HOMEOSTASIS |
| ALL ORGANS FUNCTION | TO MAINTAIN HOMEOSTASIS |
| PHYSIOLOGY | MEANS THE STUDY OF THE FUNCTION OF LIVING ORGANISIMS AND THEIR PARTS |
| SUPINE AND PRONE | ARE TERMS USED TO DESCRIBE THE BODY POSITION WHEN IT IS NOT IN ANATOMICAL POSITION |
| THE STRUCTURE THAT DIVIDES THE THORACIC CAVITY FROM THE ABDOMINAL CAVITY IS THE | DIAPHRAGM |
| THE FOLLOWING IS AN EXAMPLE OF A POSITIVE FEEDBACK LOOP | CONTRACTIONS OF THE UTERUS DURING CHILDBIRTH |