Title: KEY%20CONCEPT%20Biology%20is%20the%20study%20of%20all%20forms%20of%20life.
1KEY CONCEPT Biology is the study of all forms of
life.
2- 1.1 Objectives
- Students will be able to define and give examples
of Earths biodiversity. - Students will be able to summarize the
characteristics that all living things share. - Students will be able to summarize and give
examples of the four major unifying themes of
biology.
3Earth is home to an incredible diversity of life.
- The biosphere includes all living things and all
the places they are found.
4Earth is home to an incredible diversity of life.
- Every part of the biosphere is connected with
every other part. - The biosphere includes many environments.
- land environments
5- The biosphere includes many environments.
- saltwater and freshwater environments
- portions of the atmosphere
6- Biodiversity is the variety of life.
- Biodiversity generally increases from the poles
to the equator. - Biodiversity is greater in areas with
consistently warm temperatures.
Biodiversity is greater closer to the equator.
7- A species is one particular type of living thing.
- Members of a species can interbreed to reproduce.
- There are about 2 million different living
species have been identified.
8All organisms share certain characteristics.
- Biology is the scientific study of all forms of
life.
9- An organism is any individual living thing.
- All are made of one or more cells.
10- An organism is any individual living thing.
- All are made of one or more cells.
- All need energy for metabolism.
- All respond to their environment.
- All have DNA that they pass on to offspring.
111.1 Review
- How are species related to the concept of
biodiversity? - How do the characteristics of living things
contribute to an organisms survival? - What is the relationship between cells and
organisms? - How does biodiversity depend on a species
ability to reproduce? - You respond automatically to many different
stimuli, such as loud noises. Why might a quick
response to a sound be important?
12How are species related to the concept of
biodiversity?
- Biodiversity is the variety and number of species
in a given area.
132. How do the characteristics of living things
contribute to an organisms survival?
- The cells that are the basic unit of life carry
out the functions needed to support and maintain
life, for which they require a continual supply
of energy. The ability to respond to the
environment helps an organism to avoid injury and
death, as well as meet material needs.
Reproduction and development enables species
survival.
143. What is the relationship between cells and
organisms?
- All organisms are made of one or more cells,
which are the functional units of life, carrying
out activities that support life.
154. How does biodiversity depend on a species
ability to reproduce?
- Without the ability to reproduce, a species would
become extinct, which would lead to a decrease in
biodiversity.
165. You respond automatically to many different
stimuli, such as loud noises. Why might a quick
response to a sound be important?
- A quick response could protect against hearing
damage or a physical threat.
172
KEY CONCEPTUnifying themes connect concepts from
many fields of biology.
18All levels of life have systems of related parts.
2
- A system is an organized group of interacting
parts. - A cell is a system of chemicals and processes.
- A body system includes organs that interact.
- An ecosystem includes living and nonliving things
that interact.
192
- Biologists study many different systems.
20Structure and function are related in biology.
2
- Structure determines function.
- Proteins with different structures perform
different functions. - Heart muscle cells have a different structure and
function than stomach muscle cells. - Different species have different anatomical
structures with different functions.
21Organisms must maintain homeostasis to survive in
diverse environments.
2
- Homeostasis is the maintenance of constant
internal conditions.
222
- Homeostasis is the maintenance of constant
internal conditions.
- Homeostasis is usually maintained through
negative feedback. - Negative feedback systems return a condition to
its normal (set) point.
232
- Behaviors and adaptations can help maintain
homeostasis.
24Evolution explains the unity and diversity of
life.
2
- Evolution is the change in living things over
time. - The genetic makeup of a population of a species
changes. - Evolution can occur through natural selection of
adaptations. - Adaptations are beneficial inherited traits that
are passed to future generations.
252
- Evolution accounts for both the diversity and the
unity of life.
261.2 Review
2
- Describe a biological system.
- Give an example of how structure is related to
function in living things. - Why is homeostasis essential for living things?
- What is the relationship between adaption and
natural selection? - How are structure and function related to
adaption? - How is the process of natural selection involved
in evolution?