biology chapter 1

biology

the study of life and living things

Science

can only answer questions about things that can be measured with an instrument

Observation, Hypothesis, Predictions, Experiment or new observations, Theory

How many the scientific method?

Movement

growth and development

reproduction

use of energy

cellular structure

what are the characteristics of life

can store and transmit information

does not have a plasma membrane

not capable of all of the six characteristic of living things

viruses considered living organisms

Earth’s crust

consists mainly of oxygen and silicon

Human body

living organisms are made up mostly of oxygen, carbon and hydrogen

First law of thermodynamics

energy in the form of sunlight or food is taken up by organisms

Taxonomy

is the discipline of biology that identifies, names, and classes organisms according to certain rules.

The Central Dogma

DNA, RNA, Protein

Systematics

is the study of evolutionary relationships between organisms

Bacteria, Eukaryota, Archaea

Three- Domains

Contains unicellular prokaryotes that live in extreme environment

Prokaryotes lack of a membrane-bound nucleus

Domain Archaea

Contains unicellular prokaryotes that live in all environment( in our skin, mouths and intestines.

Domain Bacteria

Contains unicellular and multicellular eukaryotes

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Eukaryotes contain membrane- bound nucleus

Domain Eukarya

Prokaryotic cells of various shapes

Adaptation to extreme environment

Absorb or chemosynthesize food

Domains Archaea

Prokaryotic cells various shapes

Adaptation to all environments

absorb, photosynthesize

Domain Bacteria

Atom

Smallest unit of an element composed of electrons, protons, and neutrons

Molecule

Union of two or more atoms of the same or different elements

Cell

The structural and functional unit of all living things

Tissue

A group of cells with a common structure and function