Getting Your Act Together: Cell Theory
Science Study Notes
Getting Your Act Together
Cell Theory
Cells are the basic structural and functional units of life. In multicellular organisms different cells perform different functions.
Different types of cells work together so that the organism functions as a co-ordinated whole
Unicellular and Multicellular Organisms
A multicellular organism is made up of many cells
A unicellular organism only has one cell
Plant Cell
Animal Cell
Basic Requirements Needed By Cells
Cells have 3 basic requirements: water, oxygen, nutrients (e.g. vitamins, minerals, amino acids)
Multicellular Animals “Systems” of Organs to Work Together
Levels of organisation – cells -> tissues -> organs -> systems -> organism …show more content…
Travels through space at very high speed, 30 000 km/s. Wave, sometimes stream of particles.
Wavelength- the distance between adjacent crests of the wave
Frequency- of a wave is the number of waves passing a fixed point per second. Measured in hertz
Amplitude – of a wave is the distance from the middle of the wave to the top
Each type of EM has a different wavelength and carries a different amount of energy
Short wavelength carry more energy than longer wavelengths
EM waves can travel through a vacuum, they are transverse waves. The electric and magnetic forces are at right angles the direction of motion of the wave
Cosmic rays – high speed charged particles. Originate from outer space. Form part of the natural radiation that surrounds us most of the …show more content…
Likewise ’cool’ rock drops, heat from deep within the earth causes the molten rock of the mantle to move upwards. When this hot mantle rock comes into with the relatively cold crust it cools and sinks. Convection currents in the mantle are the result
Interactions at Plate Boundaries
Spreading boundaries – plates move apart, aka constructive boundaries, rock being formed
Collision boundaries – one plate collides with another, aka destructive boundaries, rock melted and returned to the mantle for recycling
Transform or scraping boundaries – plates scrape along each other, aka conservative boundaries, conserve rock (does not create/break)
The rock oceanic plates are denser than the plates that the continents sit on. When they hit, the heavier the oceanic plate is forced under the continental plate at an angle of 20o to 60o to the surface. This angle dive is called a subduction zone
When two continental plates collide, the crumple and fold – mountain formed
Plates that scrape along each other along a transform boundary – earthquake
Getting Your Act Together
Cell Theory
Cells are the basic structural and functional units of life. In multicellular organisms different cells perform different functions.
Different types of cells work together so that the organism functions as a co-ordinated whole
Unicellular and Multicellular Organisms
A multicellular organism is made up of many cells
A unicellular organism only has one cell
Plant Cell
Animal Cell
Basic Requirements Needed By Cells
Cells have 3 basic requirements: water, oxygen, nutrients (e.g. vitamins, minerals, amino acids)
Multicellular Animals “Systems” of Organs to Work Together
Levels of organisation – cells -> tissues -> organs -> systems -> organism …show more content…
Travels through space at very high speed, 30 000 km/s. Wave, sometimes stream of particles.
Wavelength- the distance between adjacent crests of the wave
Frequency- of a wave is the number of waves passing a fixed point per second. Measured in hertz
Amplitude – of a wave is the distance from the middle of the wave to the top
Each type of EM has a different wavelength and carries a different amount of energy
Short wavelength carry more energy than longer wavelengths
EM waves can travel through a vacuum, they are transverse waves. The electric and magnetic forces are at right angles the direction of motion of the wave
Cosmic rays – high speed charged particles. Originate from outer space. Form part of the natural radiation that surrounds us most of the …show more content…
Likewise ’cool’ rock drops, heat from deep within the earth causes the molten rock of the mantle to move upwards. When this hot mantle rock comes into with the relatively cold crust it cools and sinks. Convection currents in the mantle are the result
Interactions at Plate Boundaries
Spreading boundaries – plates move apart, aka constructive boundaries, rock being formed
Collision boundaries – one plate collides with another, aka destructive boundaries, rock melted and returned to the mantle for recycling
Transform or scraping boundaries – plates scrape along each other, aka conservative boundaries, conserve rock (does not create/break)
The rock oceanic plates are denser than the plates that the continents sit on. When they hit, the heavier the oceanic plate is forced under the continental plate at an angle of 20o to 60o to the surface. This angle dive is called a subduction zone
When two continental plates collide, the crumple and fold – mountain formed
Plates that scrape along each other along a transform boundary – earthquake