- Cellular Structure and Function- all living things are made of one or more cells, which are tiny organized structures capable of all life functions
- Reproduction- all living things can reproduce or make more of their own kind from one generation to the next; reproduction is an essential part of living
- Metabolism- the sum of all chemical reactions carried out in an organism.
- Homeostasis- the maintenance of stable internal conditions in spite of changes in external environment; an organism unable to maintain its homeostasis could and most likely will become ill and die
- Heredity- the passing of traits from parent to offspring (the reason children tend to resemble their parents)- a gene is the basic unit of heredity, which are coded in a molecule called deoxyribonucleic acid (DNA)
- Evolution- change in the inherited characteristics of species (or a group of genetically similar organisms that can produce fertile offspring) over generations
- Interdependence- when organisms interact and depend on each other to survive, they are part of an interdependence community
The difference between hypothesis and theory is a hypothesis is an educated guess while a theory is a set of related hypotheses that have been tested and confirmed many times by many scientists. A theory unites a broad range of observations.
An atom is the smallest unit of matter that cannot be broken down by chemical means. Protons and neutrons make up the nucleus or the core of an atom, while an electron cloud surrounds it.
An element is a pure substance made of only one kind of atom.
A compound is a substance made of the joined atoms of two or more different elements.
A molecule is a group of atoms held together by covalent bonds, which means atoms share electrons.
Hydrogen bond is a weak chemical attraction between polar molecules. The negative end of one molecule is attracted to the positive end and the positive end to the negative end.
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