Characteristics of Living Things

Honors Biology

Take out scientific method worksheets.

HW: Mythbusters due by 9/19

Unit test 9/12

Body systems quiz 9/10

All Living things are made up of cells.

What is a Cell? Basic building blocks of all living things. Perform all of the functions of life

What are two types of cells? Prokaryotic – Simple cell, no nucleus or

membrane bound organelles. Ex. Bacteria

Eukaryotic- Complex cells, has a nucleus and membrane bound organelles. Ex. Animals, Plants, Fungus, Protist

Two types of cells

Prokaryotic Eukaryotic

Unicellular vs. Multicellular Unicellular-one cell

Multicellular- many cells, specialization

Levels of Organization Atom Cell Tissue Organ Organ system Organism

11 main body systems Nervous system Endocrine system Integumentary system Muscular system Skeletal system

Urinary system Respiratory system Reproductive system Circulatory system Digestive system Lymphatic system

Homework Determine the function of each of the 11

human body systems. Identify at least two organs that are

involved with each system.

All Living Things Reproduce.

Two Types of Reproduction Sexual Reproduction

Two Parents Genetically diverse (different genes than

parents) Asexual Reproduction

One Parent Genetically identical (same genes as parent)

All Living Things Adjust to Their Surroundings. Homeostasis

Maintain internal control

Example: body temperature, glucose, water and pH levels in the blood are maintained at a constant rate.

Homeostatic mechanisms The process by which an organism

monitors and maintains a constant state.

Negative feedback loop Any change to a system causes the system

to return to its original state. Osmoregulation Thermoregulation Blood pH and Blood glucose levels

Positive feedback loop Amplifies a change in the system, causing

it to move farther and farther from its original state. Examples: childbirth and ripening fruit

Video explanation

Positive Feedback Loop Example

Negative Feedback Loop

All Living Things Grow and Develop. Growth

Increase in size

Development changes that happen as you grow To become more complex

All living things have complex chemistry Consists of complex molecules that go

through chemical changes to stay alive.

All Living Things Can convert energy to food. Or convert food to

energy. Main source of

energy for all living organisms is the SUNSUN

Producer: Producer: make their own food. Ex plants

Consumer: Must take in food to survive

All living things….. Respond to their environment Adaptation:

any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment.

Four unifying principles Cell theory

Cells are the basic unit of life All living things are made up of cells Cells come from other cells.

Four unifying principles Gene Theory

Genes determine the characteristics of living things.

They are located on chromosomes that are found in every cell.

Genes are passed on from parents to offspring.

Four Unifying principles Homeostasis

Keeping internal conditions constant even though the external environments change

Four Unifying Principles Evolution

Occurs by the process of natural selection. Organisms become more suited to their

environments through evolution because they develop adaptations.

Create a Keystone Card Use pages 90-93 in the Keystone books to

complete drawings for. Thermoregulation Osmoregulation Gas exchange Regulation of blood glucose