What is Life?
What characteristics do all living things share?
They all have a cellular organism, contain similar chemicals, use energy, grow and develop, respond to their surroundings, and reproduce.
What were the major gases found on Earth 3.6 billion years ago?
Nitrogen, water vapor, carbon dioxide and methane
Why do scientists organize living things into groups.
True or False. Organisms are placed into kingdoms based on their type of cells, their ability to make food, and the number of cells in their bodies.
True.
Organisms that make their own food are...
autotrophs
Living things must satisfy their basic needs for energy, water, living space, and stable internal conditions.
fossils
Which part of a scientific name is like your first name?
the genus.
True or False. The bacteria that produces yogurt is very similar to the bacteria that produces strep throat.
The process of change that occurs during an organisms life to produce a more complex organism
development
These organisms cannot make their own food.
heterotrophs
When do scientists think life forms appeared on Earth?
3.6 billions of years ago
a group of similar organisms that can mate and produce fertile offsprings in nature.
species
The dense area in a cell.
nucleus
The process of grouping things based on their similarities...
classification
The maintenance of stable internal conditions despite changes in the surroundings is called...
homeostasis
Scientists succeeded in producing chemical units, what did they hypothesized from these results?
True or False. Species with similar evolutionary history are classified farther apart.
False
Ancient Bacteria is another name for what kingdom.
Archaebacteria
The scientific study of how living things are classified.
taxonomy
The ability to produce offsprings is called...
reproduce
True or false. The first cells could not have needed oxygen to survive.
True
A series of paired statements that describe the physical characteristics of different organisms.
Taxonomy Key
What are the six kingdoms into which all organism are grouped?
Archaebacteria, Eubacteria, Protist, Fungi, Plants, Animals.
The process which species gradually change over time.
evolution