|The number of times greater an image is than the object.
|The ability to distinguish two separate points that are distinct from each other.
|Ultra-structure (or Fine Structure)
|Detailed structure of the internal components of cells as revealed by the electron microscope, rather than the light microscope.
|Nuclear division that results in the formation of two cells that are genetically identical to the parent cell.
|Nuclear division that results in the formation of four cells that each contain half the number of chromosomes as the parent cell (haploid).
|A linear DNA molecule wrapped around histone proteins, found in the nucleus.
|A short sequence of DNA that carries the code for the synthesis of one specific polypeptide (protein).
|Deoxyribonucleic Acid- a polymer of nucleotide molecules that form the instructions for the synthesis of proteins found within organisms.
|A membrane bound organelle responsible for the generation of ATP molecules by aerobic respiration.
|Rough Endoplasmic Reticulum
|A membrane bound organelle covered with ribosomes- the site of protein synthesis.
|Protein based structure that extends from the membrane and is involved in moving the cell itself through a medium.
|A single celled organism that does not contain a true nucleus.
|An organism consisting of cells that contain a true nucleus and membrane bound organelles.
|Associates with water molecules easily.
|Water repelling molecule.
|A protein pore that spans the membrane, through which very small ions and water soluble molecules may pass.
|The net movement of molecules or ions in a gas or liquid from an area of high concentration to an area of lower concentration.
|The movement of water molecules from a region of high water potential to a region of lower water potential across a partially permeable membrane.
|The movement of substances across membranes against a concentration gradient that requires the use of energy in the form of ATP via transport proteins.
|The passive movement of molecules down a concentration gradient, aided by transport proteins.
|A globular protein molecule with 3D structure that acts as a biological catalyst.
|The particular shape of a molecule.
|When two molecules have (matching) shapes which allow them to bind together (Lock and Key).
|A cell with specific receptors on the cell surface membrane which can receive a signal molecule (like a hormone).
|The process of taking materials into the cell by surrounding them with part of the plasma membrane, which then pinches off to form a vesicle inside the cell. This is an active process requiring ATP.
|The process of removing materials from a cell by fusing vesicles with the plasma membrane. This is an active process requiring ATP.
|Endocytosis of large solid materials such as microorganisms or cell fragments.
|Diploid cell made from the fusion of male and female gametes.
|The development and changes seen in cells as they mature to form a specialised cells.
|A similar group of cells that perform a particular function.
|A collection of tissues that work together to perform a specific function or a set of functions.
|All the chemical reactions that take place in the cells of an organism.
|Plasma/Cell Surface Membrane
|The outside surface of a organism or cell.
|A chemical that can reduce the surface tension of a film of water.
|A type of muscle (involuntary muscle) found mostly in certain internal organs and involved in involuntary movements such as peristalsis.
|Ability to stretch and recoil.
|Muscles between the ribs responsible for moving the ribcage during breathing.
|Double Circulatory System
|Transport system in which blood travels twice through the heart for each complete circulation of the body.
|The process in which energy is released from complex molecules (such as glucose) within a cell and transferred to molecules of ATP.
|One of the upper chambers of the heart.
|The lower chambers in the heart.
|Arteries that carry blood to the heart muscle.
|The pressure created by a fluid pushing against the sides of a container.
|The period when the heart muscles in the ventricles are relaxing and blood pressure is at its lowest.
|The stage in the heart cycle when heart muscles contract to pump blood.
|Sinoatrial Node (SAN)
|A region in the right atrium from which the wave of excitation is initiated.
|The use of chemical or computer imaging to provide contrast between different parts of a cell for identification.