Characteristics of Life Stations (Notes)

advertisement

CELLS

All living things are composed of cells.

A cell is the smallest unit of an organism that can be considered alive.

Form all the structures of your body

Regulate your body’s processes

Work in unison to make the organism live and breathe as one combined unit

The cell is the basic structural and functional unit of all known living organisms . It is the smallest unit of life that is classified as a living thing, and is often called the building block of life. Organisms can be classified as unicellular (consisting of a single cell; including most bacteria ) or multicellular (including plants and animals ).

Humans contain about 10 trillion (10 13 ) cells. Most plant and animal cells are between 1 and 100 µm and therefore are visible only under the microscope.

The cell was discovered by Robert Hooke in 1665. The cell theory , first developed in 1839 by Matthias Jakob

Schleiden and Theodor Schwann , states that all organisms are composed of one or more cells, that all cells come from preexisting cells, that vital functions of an organism occur within cells, and that all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.

The word cell comes from the Latin cella, meaning "small room". The descriptive term for the smallest living biological structure was coined by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in

CELL TASK: DRAW AND LABEL ONE OF THE CELLS PICTURED AT THIS STATION

UNIVERSAL GENETIC CODE:

DNA

Organisms store the information they need to live, grow, and reproduce in a genetic code in a molecule called DNA.

DNA/RNA is composed of Nucleic Acids

Each Nucleic Acid has three parts -> Phosphate, Ribose (sugar), Nitrogenous Base

There are two different types of Nitrogenous Bases o Pyrimidines

- These are single ringed Nitrogenous Bases.

 Cytosine (C)

 Thymine (T)

 Uracil (U) o Purines

- These bases have two connected rings.

 Adenine (A)

 Guanine (G) o Phosphates and Sugars in the nucleic acids interlock alternating to make the BACKBONE of the DNA/RNA molecule o The Nitrogenous Bases bind specifically to bring the two strands together.

 The Bonding Pattern in DNA is as Follows:

A – T and G – C

 The bonding pattern in RNA is the same except that A bonds to U (Thymine bases can not be used to create RNA)

When all the bonds are made, the resulting shape is the memorable double helix.

This is a nature shape due to molecular forces like polarity.

GENETIC CODE TASK: Write the code that would correctly pair with the following strand of DNA

T A G C C G A T T A G A C G G C A A G A

ORGANIZATION

All living things show some level of organization (compartmentalization) of the body.

Multicellular organisms have organs.

Single Cellular organisms have organelles.

ORGANIZATION TASK: Put Together the puzzle and ANSWER THE QUESTION at the bottom of the puzzle.

ENERGY USE

Living things use energy.

This is either through obtaining/eating energetic stores or through means that allow the organism to create its own energy.

ENERGY USE TASK:

Hold the book at this station with one arm out to the side of you (like the picture below). Record how long you can hold the book without dropping your arm. Record the times of 2 other people at the station.

RESPOND TO ENVIRONMENT

A stimulus is a signal to which an organism responds.

Stimuli can be:

- Stress

- Emotions

- Tragic events

- Normal life events

- Physical

- Many More

RESPOND TO STIMULUS TASK:

Describe how you would react in the following situations:

- Earthquake during class

- Actual Fire on campus

- Your crush notices your existence and seems to be interested.

HOMEOSTASIS

All living things must maintain stable internal conditions that best allow them to live. BALANCE

YOUNG GRASSHOPPER.

humans, homeostasis happens when the body regulates body temperature in an effort to maintain an internal temperature around 98.6 degrees Fahrenheit. For example, we sweat to cool off during the hot summer days, and we shiver to produce heat during the cold winter season.

Word origin : from the Greek: homeo , meaning unchanging + stasis , meaning standing

.

HOMEOSTASIS TASK 1: Balance on 1 foot for 30 seconds

HOMEOSTASIS TASK 2: Balance the Broom Provided

HOMEOSTATIS TASK 3: Why is internal balance important? What happens when that internal balance is thrown off? How is balance important in your life?

GROWTH

GROWTH TASK: Draw a comic strip showing a flower growing from a seed to blooming

REPRODUCTION

All living things must be able to make “copies” or have offspring to help replenish those that are dying off.

- Can be Sexual or Asexual

Sexual -> Takes two to tango and produce an offspring (not identical but rather a combo of the traits of the parents)

Asexual -> 1 is not the loneliest number in this case. One is all that is required -> Offspring are clones of the parents

REPRODUCTION TASK: DRAW A SELF PORTRAIT

-> Which 2 celebrities would produce the cutest baby?

Download
Study collections