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41 Cards in this Set

  • Front
  • Back
Biology
science of life (12)
Life (Propeties of)
Cellular organization, Metabolism, Homeostasis, reproduction, heredity
Energy
capacity for doing work, often described as the ability to make things move or change (75)
Reproduction
The ability to reproduce from one generation to the next is the property of all living things. Bacteria divide daugter cells every 15 minutes for example. Since no organism lives forever, reproduction is essential to life.
Metabolism
Sum of all chemical processes occuring in an organism (13, 85)
Micro Evolution
change that occurs within a species time (251)
Macro evolution
change that occurs among species over time as new species evolve and old species become extinct (251)
Cellular Organization
All living things are composed of one or more cells, tiny chambers with thin covering called membranes. smallest unit capable of life
Homeostasis
Maintaining relatively stable internal conditions, often quite different than their surroundings.
Cell
Smallest unit capable of life functions
Multicellular
Organisms with more than one cell. ex) human beings
Heredity
Set of instructions to offspring, which results in family resemblance
Acid
Compound that is a proton doner
Acid Rain
Precipetation with below normal pH often the result of industrial pollution
Active site
sit on which an enzyme attaches to its substrate
Active transport
the movement of a particle through a membrane acgainst a concentration gradient with the use of energy from ATP (62)
Adaption
the process of becoming adapted to an environment, an anatomical structure, physiological process, or behavioral trait that improves an organisms likelihood of survival and reproduction
adedine
a purine base; component of nucleo tides
thymene
a purine base; component of nucleo tides
Guanine
the other base; component of nucleo tides
Cytosine
a base; component of nucleo tides
allosteric enzyme
an enzyme whose shape can be altered by the binding of a signal molecule to its surface
activation energy
amount of energy required to start a chemical reaction
amino acid
organic molecule that is the build block of a protein (36)
amylase
enzyme that breaks down startches into sugars
antibiotic
substance used as a drug to kill bacteria
Species
A group of organisms that look alike and are capable of producing fertile offspring in nature (251)
Species diversity
the number of species in an ecosystem
Gene
section of chromosome that codes for a protein or RNA molecule (119)
Mutation
change in the DNA of a gene or chromosome (124, 154)
Cellulose
Carbohydrate that is the main structural component of cell walls (34)
Diatom
photsynthetic unicellular protist of the phylum Bacillariophyta (486)
Cell membranes
bilipid layer that encloses the cytoplasm, essential to the cell's cytoplasm; also called the plasma membrane (26)
Coevolution
reciprocal evolutionary adjustments between interacting members of an ecosystem (361)
Evolution
change in the genetic makeup of a population or specis over time (48)
Atoms
smalles unit of matter that cannot be broken down by chemical means (29)
Electron
elementary particle with negative electric charge, that rotate around the nucleus (29)
Proton
particles in the nucleus clustered with neutrons with a positive charge (29)
Neutron
particles with no charge that are clustered in the nucleus of an atom with protons (29)
Molecule
Smallest particle of a substance that retains all the properties of the substance and is composed of two or more atoms bonded by the sharing of electrons (30)
Chemical Formula
chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. It identifies each type of chemical element by its element symbol and identifies the number of atoms of such element to be found in each discrete molecule of that compound