Catalyst Questions…Let’s review some things

How should our notes be set up?

What is on even pages?

What are the different sections of our binders?

What are ways to be successful in this class?

Quick Quiz #2

Characteristics of Life

What separates us from non-living things?

Objective:

SWBAT to differentiate between the eight characteristics of life.

Today I’ll provide the notes…

What is the goal of all organs?

To maintain life!!

1. Maintaining Boundaries

Separates the outside from the inside

What do our cells have? Cell membrane!

What do our bodies have? Have skin! AKA integumentary system

2. Movement Promoted by the muscular system.

Aided by the…. Skeletal system!

How?? The muscles pull on the bones to create movement!

Also, when blood, foodstuff, urine, and lymph are propelled through internal organs in the cardiovascular, digestive, and urinary systems

3. Responsiveness

Ability to sense changes (called stimuli) in the environment and then react to them.

The BRAIN STEM generally controls the NERVOUS system which bears most of responsibility for responsiveness.

4. Digestion

Is the process of breaking down ingested FOOD into simple MOLECULES that can be absorbed into the BLOOD for delivery to all body cells by the CARDIOVASCULAR system.

5. Metabolism

Is a broad term that refers to all CHEMICAL REACTIONS that occur within the body cells.

Who can think of an example? Proteins from amino acids !

What does it produce? ATP molecules

Depends on DIGESTIVE and RESPIRATORY systems, and CARDIOVASCULAR distributes throughout the body

It is regulated by HORMONES and secreted by the glands of our ENDOCRINE system

6. Excretion

Removing WASTES from the body.

Our URNIARY and DIGESTIVE systems participate in excretion and so does our INTEGUMENTARY system (through sweat!)

7. Reproduction

Is the production of OFFSPRING

The difference between mitosis and meiosis?

Mitosis produces more cells for use in functions the body = somatic cells

Meiosis begins organismal reproduction = gametes (the egg and sperm)

The REPRODUCTIVE system is perfectly regulated by the ENDOCRINE system which produces hormones

8. GROWTH!!

An increase in SIZE

Cell-constructing activities have to be occurring at a FASTER rate then cell-destroying ones.

Practice by answering the questions…