Chapter 1 Flashcards
Biology
Study of life/living things
six kingdoms of organisms
Archaea, bacteria, protista, fungi, plantea, and animalia
Archaea
Kingdom of prokaryotes includes this methanogen, which manufactures methane.
(simple cells that do not have nuclei)
Bacteria
This group is the second of the two prokaryotic kingdoms.
Two kingdoms that belong to prokaryotes groups
Archaea and bacteria
Protista
Include most of the unicellular eukaryotes as well as multicellular algea
Whose cells contain a nucleus
Fungi
Contains nonphotosynthetic organisms, mostly multicellular
**These kingdoms digest their food externally such as mushrooms
Plantea
Contains photosynthetic multicellular organisms that are primarily terrestrial, such as flowering plants
Animalia
nonphotosynthetic multicellular organisms that digest their food internally such as a mountain goat
different ways to study the diversity of life
Live with gorillas, collect fossils, listen to whales, etc…, isolate bacteria, grow mushrooms and examine the structure of fruit flies, read messages encoded in the long molecules of heredity
Note***
the living world is very diverse, but all organisms share key properties. However each kingdom is profoundly different
Note***
All living things posses cells that carry out metabolism, mantain stable internal conditions, reproduce, and use dna to transmit hereditary informationto offspring
Five basic properties that are shared by living things
Cellular orgainzations Metabolism homeostasis Growth and reproduction Heredity
Cellular organization
all living things are composed of one or more cells
Membrane
A tiny compartment with a thin covering
Note***
Some cells have simple interiors, while others are complexly organized, but ALL are able to grow and reproduce
Note***
A human body can contain 10-100 trillion cells
Metabolism
The transfer of energy from one form to another in cells. All living things use energy, captured from sunlight by plants, algae, and certain bacteria through photosynthesis. to get energy that powers our lives, we extract it from plants or from animals that eat plants or that eat plant-eating animals