Bio B
Terms
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- Biology
- the science of life
- cell
- smallest unit that can perform all the life's processes
- metabolism
- sum of all chemical processes occurring in an organism
- homeostatis
- the maintenance of stable internal conditions in the spite of changes in the external environment
- gene
- sections of chromosomes
- heredity
- tramission of genetics from parents to offspring
- mutations
- change in DNA or gene
- observations
- the act of noting or percieving objects
- hypothesis
- a testable answer to a scientific question
- pH
- a scale that determines an acid or base
- experiment
- a test that is conducted to prove or disprove a hypothesis
- control group
- a substance that is tested against the control to observe changes
- Independant Varible
- A variable that is not affected by any other variables with which it is compared.
- dependant varible
- A variable affected by another variable or by a certain event.
- constants
- when a substance is unchanging
- control
- To verify or regulate
- nucleic acid
- Any of a group of complex compounds found in all living cells and viruses, composed of purines, pyrimidines, carbohydrates, and phosphoric acid.
- nucleotide
- Any of various compounds consisting of a nucleoside combined with a phosphate group and forming the basic constituent of DNA and RNA.
- DNA
- A nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA.
- RNA
- A polymeric constituent of all living cells and many viruses, consisting of a long, usually single-stranded chain of alternating phosphate and ribose units with the bases adenine, guanine, cytosine, and uracil bonded to the ribose.
- ATP
- contains high-energy phosphate bonds and is used to transport energy to cells for biochemicl processes, including muscle contraction and enzymatic metabolism,
- energy
- A source of usable power
- activation energy
- the energy that an atomic system must acquire before a process
- enzyme
- Any of numerous proteins or conjugated proteins produced by living organisms and functioning as biochemical catalysts.
- Substate
- A surface on which an organism grows or is attached.
- active site
- The part of an enzyme at which catalysis of the substrate occurs.
- endergonic reaction
- a nuclear reaction occurring with absorption of energy
- exergonic reaction
- a nuclear reaction accompanied by the evolution of energy
- passive transport
- when cells are transported w/o energy
- active transport
- when cells are transported w/energy
- concentration gradient
- The graduated difference in concentration of a solute per unit distance through a solution.
- equilibrium
- Having equal solute in and outside the cell
- diffusion
- when a solution spreads out
- osmosis
- Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane.
- Hypertonic solution
- When a cell has more solute than its surroundings
- Hypotonic soution
- When a cell has less solute than its surroundings
- isotonic solution
- when a cell and its surroundings have an equalibrium solute
- facilitated diffusion
- a process by which substances are transported across cell membranes
- carrier protein
- ...
- receptor protein
- ...
- marker protein
- ...
- sodium potassium pump
- A mechanism of active transport that moves potassium ions into and sodium ions out of a cell.
- endocytosis
- When solute goes into a cell
- exocytosis
- when water is secreted from a cell
- atom
- A unit of matter, the smallest unit of an element
- protons
- a postivily charged atom
- electrons
- a negativily charged atom
- atomic number
- The number of protons in an atomic nucleus.
- atomic mass
- The mass of an atom, usually expressed in atomic mass units.
- element
- A substance composed of atoms
- compound
- A combination of two or more elements or parts.
- ion
- An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons.
- covalant bond
- A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms.
- polar covalant bond
- ....
- ionic bond
- A chemical bond between two ions with opposite charges
- hydrogen bond
- a hydrogen bond is a type of attractive intermolecular force that exists between two partial electric charges of opposite polarity.
- cohesion
- When molecules stick to one another
- adhesion
- the attraction between two molecules
- capillary action
- a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries
- polarity
- ....
- solution
- A homogeneous mixture of two or more substances
- acid
-
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Having a pH of less than, Having a relatively high concentration of hydrogen ions. - base
- Having a ph greater than 7
- pH scale
- a scale that determines if a solution is an acid or base. It ranges 1-14
- organic molecule
- most carbon molecules are organic molecules
- carbohydrate
- Any of a group of organic compounds that includes sugars, starches, celluloses, and gums and serves as a major energy source in the diet of animals.
- monosaccharide
- Any of several carbohydrates, such as tetroses, pentoses, and hexoses, that cannot be broken down to simpler sugars by hydrolysis.
- disaccharide
- Two or more monosaccharides
- saturated fat
- A fat, most often of animal origin, that is solid at room temperature and whose fatty acid chains cannot incorporate additional hydrogen atoms.
- unsaturated fat
- A fat derived from plant and some animal sources, especially fish, that is liquid at room temperature.
- peptide bond
- The chemical bond formed between the carboxyl groups and amino groups of neighboring amino acids
- polypeptide
- A peptide, such as a small protein, containing many molecules of amino acids
- lipid
- Any of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in nonpolar organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells.
- protein
- Any of a group of complex organic macromolecules that contain carbon, hydrogen, oxygen, nitrogen, and usually sulfur and are composed of one or more chains of amino acids.
- amino acids
- monomer consists of a central carbon atom bonded to four partners.
- Compound Light Microscope
- ....
- Magnification
- The ratio of the size of an image to the size of an object.
- Resolution
- The fineness of detail that can be distinguished in an image
- cell theory
- 1. All cell come from existing cells. 2.All cells are living 3.Basic cell structure
- cell membrane
- The semipermeable membrane that encloses the cytoplasm of a cell
- cytoplasm
- the region of the cell between the plasma membrane and the nucleus is the cytoplasm
- cytoskeleton
- The internal framework of a cell
- prokaryotic
- ..
- eukarotic
- ...
- cell wall
- he rigid outermost cell layer found in plants and certain algae, bacteria, and fungi
- flagella
- A long, threadlike appendage, especially a whiplike extension of certain cells or unicellular organisms that functions as an organ of locomotion.
- cilia
- it acts in unison with other such structures to bring about the movement of the cel
- nucleus
- A large, membrane-bound, usually spherical protoplasmic structure within a living cell
- phospholipid bilayer
- the phosphlipid form two layer surrounding an organelle or cell.
- organelle
- Organs of a cell
- mitochondria
- the sites where cellular repiration occurs
- choroplast
- the organelle found in plants or algee
- nucleolus
- a section of the nucleus
- ribosomes
- proteins contructed from the cell
- lysosomes
- membrane bound sacks
- microtubules
- hollow tubes
- microfilaments
- Any of the minute fibers located throughout the cytoplasm of cells
- rough er
- produce protein that package them
- smooth er
- same as rough the lack ribosomes
- golgi aparatus
- an organelle that modifies stores and routes protein and other chemical proteins
- central vacole
- a membrane bound sack