Emergent properties
It's the property where living things become more and more complex as it goes from cellular level (exp humans are made of cells) to
... [Show More] organ system (exp humans are made of organ system composed of millions of cells).
Cell ---> Tissue ----> Organ ---> Organ System ---> Animal
Biology
Scientific study of life.
Molecule
is an electrically neutral group of two or more atoms held together by chemical bonds.
Organelle
is a specialized subunit within a cell that has a specific function, and it is usually separately enclosed within its own lipid bilayer.
Cell
the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic.
Tissue
any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.
Organ
is a collection of tissues joined in a structural unit to serve a common function.
Organism
is any contiguous living system (such as animal, fungus, micro-organism, or plant).
Population
is a summation of all the organisms of the same group or species, who live in the same geographical area, and have the capability of interbreeding.
Community
All of the groups of animals or plants living together in the same area or environment and usually interacting to some degree.
Ecosystem
is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system.
Biosphere
The entire population of Earth inhabited by life; the sum of all the planet's ecosystems.
Eukaryotic cell
A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles.
Prokaryotic cell
A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles.
Matter
Anything that takes up space and has mass.
Element
Any substance that cannot be broken down to any other substance by chemical reactions.
Compound
A substance consisting of two or more different elements combined in a fixed ratio.
Atom
The smallest unit of matter that retains the properties of an element.
Proton
A subatomic particle with a single positive electrical charge. It is found in the nucleus of an atom.
Electron
A subatomic particle with a single negative electrical charge. One or more electrons move around the nucleus of an atom.
Neutron
A subatomic particle having no electrical charge. It is found in the nucleus of an atom.
Atomic nucleus
An atom's dense central core, containing protons and neutrons.
Essential elements
A chemical element required for an organism to survive, grow, and reproduce.
Valence electrons
An electron in the outermost electron shell.
Valence shell
The outermost energy shell of an atom, containing the valence electrons involved in the chemical reactions of that atom.
Orbital
The three-dimensional space where an electron is found 90% of the time.
Chemical bond
An attraction between two atoms, resulting from sharing of outer-shell electrons or the presence of opposite charges on the atoms.
Covalent bond
A type of strong chemical bond in which two atoms share on or more pairs of valence electrons.
Nonpolar covalent bond
A type of covalent bond in which electrons are shared equally between two atoms of similar electronegativity.
Polar covalent bond
A covalent bond between atoms that differ in electronegativity.
Electronegativity
The attraction of a given atom for the electrons of a covalent bond.
Ionic bond
A chemical bond resulting from the attraction between oppositely charged ions.
Ionic compound
A compound resulting form the formation of an ionic bond; also called a salt.
Hydrogen bond
A type of weak chemical bond that is formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative
Chemical reaction
The making and breaking of chemical bonds, leading to changes in the composition of matter. [Show Less]