Biology Exam 1

scientific study of life

order

ability of organisms to reproduce their own kind

controlled by dna

use of chemical energy to power an organisms activitites and chemical reactions

ability to respond to environmental stimuli

abiltiy to control an organisms internal environment

adaption evolves over many generations as individuals with traits best suited to their environments have greater reproductive success and pass their traits to their offspring

all of the environments on earth that support life

all organisms living in a particular area as well as the non living components

entire array of organisms living in  a particular ecosystem

all individuals of a species living in a specific area

individual living thing

several organs that cooperate in a specific function

structure that is composed of tissues and that provide a specific function for the organism

group of similiar cells that perform a specific function

fundamental unit of life

membrane bound structure that performs a specific function in a cell

a cluster of small chemical units called atoms held togehter by chemical bonds

regulate internal environment, take in & use energy, respond to it's environment, develop & maintain it's complex organization & give rise to new cells

organelle

prokaryotic, eukaryotic

smaller, first to evlove,

contain organelles found in plants, animals and fungi

producers

eat plants and other animals

acts as recyclers

recycling of chemcial nutrients & movement of energy through the ecosystem

gene

differences

names species and classifies them into a system of broader groups

most diverse and widespred prokaryotes

are prokaryotes that often live in earth's extreme enviornments

have eukaryotic cells

• presented evidence to support the idea of evolution.
• natural selection

process in which organisms with certain traits re more likely to survive and reproduce, over time this results in evolution of new species

individual living thing

organisms reproduce more offspring than can survive

are the survivors

draw general conclusions from many observations

come up with ways to test a hypothesis

proposed explanation for a set of observations

supported by a large and usually growng body of evidence

testable, falsifiable

understand natural phenomena

apply scientific knowledge or some specific purpose

micropipette

• harvest stem cells
• help infertile couples
• produce desirable organisms for research & agriculture 
• to save endangered species

organisms reproduce more offspring than can survive

introduce allergens to the food supply

cluster of small chemical units called atoms held together by chemical bonds.

most basic unit.  regulates it's internal environement, takes in & uses energy

• hydrogen
• oxygen
• nitrogen
• carbon dioxide

A substance composed of atoms all with the same number, cannot be split chemically into smaller substances

tiny amount of chemical element present in small amounts in something such as a metal or ore

A substance consisting of atoms joined by chemical bonds into a molecule.

attraction between atoms that allows the formation of chemical substances that contain two or more atoms

chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion

2 or more atoms share one or more pairs of outer shell electrons

usually a liquid, capable of dissolving another substance

A substance dissolved in another substance

A clear, colorless, odorless, and tasteless

compounds associated with life processes, are the subject matter of organic chemistry

core theme of biology

electronegativity

equally

un equal