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Sunken Lesson. It’s Alive!!! Betty Jo Leonard 7 th grade. CHARACTERISTICS OF LIVING THINGS. The six characteristics of living things are: Living things must have cells Living things must sense and respond to change Living things must be able to reproduce. Living things must have DNA

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sunken lesson

Sunken Lesson

It’s Alive!!!

Betty Jo Leonard

7th grade

characteristics of living things
CHARACTERISTICS OF LIVING THINGS
  • The six characteristics of living things are:
  • Living things must have cells
  • Living things must sense and respond to change
  • Living things must be able to reproduce
slide3
Living things must have DNA
  • Living things must use energy
  • Living things must grow and develop
living things must have cells
Living things must have cells
  • Every living organism is composed of cells.
  • A cell is a membrane-covered structure

that contains al of the materials

necessary for life

  • There are two types of cells:
    • Unicellular
    • Multicellular
characteristics of unicelluar organisms
Characteristics of Unicelluar organisms

Unicellular organism are composed of

only one cell

Examples:

Amoeba

Hydra

slide6
Unicellular organisms reproduce asexually
  • Unicellular organisms do not perform specialized functions
characteristics of multicellular organisms
Characteristics of Multicellular organisms
  • Multicellular organisms are composed of

two or more cells and the

numbers can be in the trillions.

Examples:

Monkeys

Trees

Humans

slide8
Multicellular organisms reproduce sexually
  • Multicellular organisms has cells that perform specific functions.

Examples:

Muscle cells are specialized for

movement

Nerve cells transport signals

living things must sense and respond to change
Living things must sense and respond to change

All organisms have the ability to sense change in their environment and respond to that change.

Stimulus (plural stimuli) is any

change in an organism’s

environment that affects

the activity of the organism

slide10
Response is the reaction to what

happens when you reacted

to the stimulus

slide11
Homeostasis is the ability to maintain a

stable internal environment

regardless of the external

environment

Example:

- The body sweats when it is hot

outside in the summer

- The body shivers with cold

chills when the body is cold

living must be able to reproduce
Living must be able to reproduce
  • There are two types of reproduction:
    • Asexual
    • Sexual
slide13
Asexual reproduction is where a

single parent produces

offspring that is identical to

the parent

Example:

Earthworm

Amoeba

slide14
Sexual reproduction is where two parents

from opposites sexes each

contributes sex cells to produce

offspring that will share

characteristics of both parents

Examples:

Animals

Flowers

living things must have dna
Living things must have DNA
  • DNA is an acronym for deoxyribonucleic

acid

Deoxyribonucleic acid is heredity material

that controls all the activities of

a cell, contains the information

to make new cells

and provides for

making proteins

slide16
DNA provides instructions for making molecules called proteins
  • Proteins are responsible for almost all of the

activities of an organism’s

characteristics

slide17
During reproduction DNA is copied and passed on its offspring
  • DNA carries the characteristics of the

organism

  • Heredity is the transmission of

characteristics from one

generation to the next

generation

living things must use energy
Living things must use Energy
  • Organisms use energy to carry out the activities of life
  • Metabolism is the sum total of all the

chemical activities that a

cell performs

four stages of metabolism
Four stages of Metabolism
  • Ingestion
  • Digestion
  • Respiration
  • Excretion
slide21
Digestion is the breaking down and

absorption of nutrients (food)

slide23
Excretion is the removal of bodily waste
  • There are four ways in which bodily

waste are excreted from the body

-Urine

-Feces (Bowel Movements-BM’s)

-Perspiration (sweat)

-Carbon Dioxide (Exhaling)

living things must have the ability to grow and develop
Living things must have the ability to Grow and Develop
  • All organisms regardless whether they are unicellular (single-cell) or

multicellular (two or more cells) grow and develop during periods of their lives

developmental stages
Developmental Stages
  • Embryo
  • Infancy
  • Toddler
  • Adolescent
  • Adulthood