Biology Midterm intro ch.1 ch.2

Science

The study of natural events in the physical world

Five Characteristics of Science

Observable, Measurable, Testable, Falsifiable, Reproducable

Five limitations of Science

Tangible Data, Absolutes not permitted, cannot judge morality or ethic issues, Man’s senses and thoughts are finite, Logic does not always arrive at truth

Steps of the Scientific Method

Observation, Questioning, Exploration, Hypothesis, Experimentation, Conclusion, Peer Review

ex nihilo

out of nothing

Genesis 1:28

Man’s role as a biologist

Genesis 2:15

Man’s role in Botany

Genesis 2:19-20

Man classifies animals, Taxonomy

Worldview

A set of presuppositions we hold about the basic makeup of the world

Cell

Smallest most basic unit of life

tissues

made up of similar cells

Organ

made up of tissues

Organ Systems

Organs working together

Organism

all the organ systems

population

the members of similar organisms within a particular area

species

all the population of similar organism that are capable of breeding

community

population of species that interact with the physical environment

ecosystem

communities interact with the physical environment

biosphere

the zone on the earth surface where life exists

energy

capacity to do work

Metabolism

All chemical reactions occurring in a cell

Sun

the ultimate source of energy for life on earth

Homeostasis

an internal sustainability

evolution

the process which populations accumulate adaptions over time

3 main classifications of life

Archaea, Bacteria, Eukarya

Binomial Name

Genus and Epithet

Biology

scientific study of life

Hypothesis

a possible explanation for an event

Scientific Theory

an accepted explanation for how the world works

Cell Theory

all living things are made up of cells

Gene theory

Units of heredity passed down

Technology

application of science for a practical purpose

biodiversity

total number and relative abundance of species

Matter

anything that takes up space and has mass

Three states of matter

Solid, Liquid, Gas

element

a substance that cannot be broken down by ordinary means

Atomic theory

elements consist of atoms

Atomic number

total number of protons

Isotopes

same number of protons but different number of neutrons

Molecule

Group of atoms bonded together

Compound

molecule containing atoms

Ionic Bond

Attraction between opposite charges

Covalent Bond

sharing electrons to complete outer shell

Reactant

molecules that participate in reactions

products

molecules formed by reactions

Cohesion

water clings to each other through hydrogen bonding

adhesion

water cling to other polar bonds

buffers

effect ph