LIFE FUNCTIONS

You will learn the 10 life functions and their definitions. MR STRANGER Meet Mr. Stranger! You will learn the 10 life functions and their definitions.

Life Functions Life functions are needed to keep a stable or constant environment with in a living thing.

Metabolism All of the chemical activities happening in your body.

Obtaining raw materials for…. Nutrition Obtaining raw materials for….

Nutrition * Nutrition: Activities by which an organism obtains materials from its environment and prepares them for use.

energy growth

To get energy Food Digestion growth

Heterotrophic Autotrophic 2 Types Heterotrophic Autotrophic Photosynthesis SUN  FOOD Ingestion =eat Digestion =break down Egestion =GET RID OF Feces(POOP)

Heterotroph or Autotroph?

DIGESTION

Heterotroph or Autotroph?

Heterotroph or Autotroph?

Heterotroph or Autotroph?

Heterotroph or Autotroph?

Respiration Turning food into energy

Respiration: releases the chemical energy stored in nutrients.

Growth To get larger (using raw materials to make a larger body).

Synthesis Simple substances are combined To form complex substance Turning the raw materials from your food into needed materials. Simple substances are combined To form complex substance

This is Synthesis

End of Synthesis Before digestion

Absorption Incorporating the materials from your food into your body parts (in order to grow or heal).

Transport Moving and distributing materials throughout the body.

TRANSPORT Simple organisms: direct exchange with environment.

Transport (multicellular) Complex organisms: all cells are not in contact with the environment. The circulatory system allows blood to carry nutrients , oxygen and wastes.

TRANSPORT Plants: have specialized structures called xylem and phloem to transport substances from the roots to the stems and leaves. Xylem for water Phloem for food

Reproduction Making more of your own species.

Reproduction: 2 Types: Sexual Reproduction: 2 parents make a unique individual. *1/2 genes from mom *½ genes from dad Asexual Reproduction: 1 parent copies itself.

Asexual reproduction requires one parent cell and offspring are identical to the original.

Urea Excretion Carbon Dioxide Expelling toxic wastes from the body. CO2, URINE, SWEAT Urea Carbon Dioxide

Paramecium Excretion Urea

Regulation Maintaining Homeostasis An Internal Balance . 37 Temperature Body Time

9. Regulation Homeostasis Staying out of danger (reflexes) Constant body temperature (Nervous system) Constant water level (Excretory system) Constant blood sugar level (Endocrine System) Constant blood pressure (Nervous System) Homeostasis Blood Sugar Time

Danger Zone Homeostasis TEMPERATURE Danger Zone Time

MR STRANGER rowth ransport ynthesis utrition xcretion etabolism egulation bsorption eproduction espiration

Which Life Function Is It? Excretion Nutrition Transport Regulation Excretion Reproduction Nutrition Synthesis Assimilation

The body temperature of a runner increases The body temperature of a runner increases. The runner responds by perspiring, which lowers body temperature. This process is an example of…. maintenance of homeostasis transport locomotion reproduction

If a human system fails to function properly, what is the most likely result? a stable rate of metabolism a disturbance in homeostasis a change in the method of respiration a change in the DNA

Which life process is classified as autotrophic in some organisms and heterotrophic in other organisms? hormonal regulation nutrition anaerobic respiration transport

When an individual goes without eating for a day, his or her blood sugar level remains about the same throughout the day. This relatively constant condition is maintained by…… regulation egestion reproduction growth of cells

Why is this organism considered a heterotroph rather than an autotroph? It manufactures its own food. It does asexual reproduction. It performs photosynthesis. It absorbs nutrients.

Describe the difference: Sexual and Asexual Autotrophic and Heterotrophic

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