Do Now!!

List 5 things that are living and 5 things that are not living

What do the living things you listed have in common that separate them from the non-living things?

Objectives

Identify the 4 unifying themes of Biology.

Explain what characteristics an organism must have to be considered alive.

Unifying themes of Biology

1. All living things share common characteristics

2. All living things share common needs3. Living Things meet their needs through

interactions with the environment4. The types and numbers of living things

change over time

1) All Living Things Share Common Characteristics

a) Made of 1 or more cells.

Unicellular• Small, hard to see• directly exchange nutrients and waste with environment

Multicellular• Work together• cells have specialized jobs and work together to keep organism alive

Common Characteristics (cont.)

b) Organized

All parts work together to take in nutrients and remove waste

Body plan allows it to survive in its environment

Common Characteristics (cont.)

c) Growth and Development

*Cell division and cell differentiation*

Common Characteristics (cont.)

http://www.youtube.com/watch?v=WFDHWk_bjsU

d) Responds to stimuli

2) All Living things share common needs.

a) We need energy!!Energy is the ability to do work.The sun is the ultimate source of

energy!

Energy (cont.) Can come from food and is

converted into usable form, think calories

Energy moves along food web, only 10% of energy transferred to each level

How do we get our energy?Autotroph (Producers)Heterotroph (Consumers)

Common needs (cont.)

B) Homeostasis:Regulation of an

organism’s internal conditions to maintain life

Blood PressureBlood sugar levelsTemperature

Common needs (cont.)

C) living spacei. Serves as protectionii.Sources of nutrientsiii.Area to grow and develop

All organisms need to Adapt

D) Adaptations: characteristic of an organisms that allows it to

better survive in its environment *Organisms within a species must adapt to changing

environments or they will become extinct!!*Ex: A cheetah’s speed, camouflage, etc.

Common needs (cont.)

Can you spot the adaptation in each picture?

3) Living Things meet their needs through interactions with the environment A) Environment: everything that surrounds an

organism.i. Living factors (biotic factors)ii. Non-living factors (abiotic factors)

Ex: sunlight, temperature, climate, rocks, etc.

Look at the following picture and list 3 abiotic factors & 3 biotic factors

Interactions with the Environment (cont.)

B) Species Interactions- 2 or more things affecting each other.

Think-Pair-Share

Name at least 5 DIFFERENT interactions occurring in the following picture.

Do Now

List 2 characteristics that all living things share. List 2 needs that all living things share. What is the scientific term for a living thing? Non-living?

Imaginary Creature Project

Read the handout for instructions Assignment will be due the next class. You must make an ORIGINAL CREATURE!!

Quiz

You will have a “quest” on MONDAY 9/26 Review the study guide, your notes, the powerpoint on the

website, and the jeopardy game to help you study. We will do a quick lab tomorrow and then play jeopardy to

review.