levels of biological organisation 3
TRANSCRIPT
shepp high sciencelevels of Biological Organisation
Remember these cells?
What are these cells? Write down 3 structures you can see in these cells.
What are these cells? Write down 2 ways these
cells differ from those in the previous slide.
Cells: Are the structural and functional units of all living organisms.
humans have some 75-100 trillion multicellular (more than one cell) unicellular (single celled)
cell membrane
mitochondriavacuole
nucleus
cytoplasm
CHLOROPLAST NUCLEUS VACUOLE CELL WALL CELL MEMBRANE MITOCHONDRIA CYTOPLASM (OOPS ONE IS REPEATED!)
There are many different types of cells in the human body.
blood cells
blood cells
sperm cells
blood cells
sperm cells
egg cell
blood cells
sperm cells
egg cell
neuron (nerve cell)
blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cell
blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cell
fat cell
blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cells
fat cells
pancreatic cell
blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cells
fat cells
pancreatic cells
stomach cell
blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cells
fat cells
pancreatic cells
stomach cell
gland cell
Tissue: Many cells make a tissue. A tissue is a group of cells that perform the same function. There are 5 main tissue types:
muscle; epithelium; connective; nervous; and secretory.
EPITHELIAL TISSUE
EPITHELIAL TISSUE
EPITHELIAL TISSUEsmall intestine
EPITHELIAL TISSUE
EPITHELIAL TISSUE
CONNECTIVE TISSUE
CONNECTIVE TISSUE
CONNECTIVE TISSUE
CONNECTIVE TISSUE
CONNECTIVE TISSUE
MUSCLE TISSUE
MUSCLE TISSUE
MUSCLE TISSUE
MUSCLE TISSUE
MUSCLE TISSUE
stomach
NERVOUS TISSUE
NERVOUS TISSUE
NERVOUS TISSUE
NERVOUS TISSUE
NERVOUS TISSUE
cow’s eye
SECRETORY TISSUE
SECRETORY TISSUE
SECRETORY TISSUEpancreas
SECRETORY TISSUE
horse sweat gland
SECRETORY TISSUE
Organ: A group of different tissues with a specific job.
bladder
bladder
eye
bladder
eye
brain
bladder
eye
brain
stomach
bladder
eye
brain
stomach kidney
bladder
eye
brain
stomach kidneyheart
bladder
eye
brain
stomach kidneyheart
intestines
bladder
eye
brain
stomach kidneyheart
intestinesbone
Organ System: A group of organs that work together to perform a specific job. Many systems come together to allow an organism to survive and reproduce.
digestive
digestive circulatory
digestive circulatory
endocrine
digestive circulatory
endocrine
excretory
digestive circulatory
endocrine
excretory
muscular
digestive circulatory
endocrine
excretory
muscularskeletal
digestive circulatory
endocrine
excretory
muscularskeletal
nervous