Post on 25-Dec-2015
transcript
I want plants to grow faster
• Independent Variable –
– the thing I change • Water plants different amounts
• Control / constant – • Do not change- all plants in same location, get same
amount of dirt and sunlight. Etc…
• Dependent Variable – • Did the plants grow any faster with change in water
2 types of cells
• Prokaryote
– no nucleus
• Kingdoms:
Eubacteria and
Archaebacteria
• Eukaryote
- have nucleus
• Kingdoms: Plant,
Animal, Protista &
Fungi
Cell Structures and Functions
• Cell Membrane - barrier
• Nucleus – DNA
• Cytoplasm- “blood” of cell
• Ribosome- protein maker
• Mitochondria- energy maker
• Chloroplast- make sugar and O2
Deoxyribonucleic Acid (DNA)
Nitrogen bases (Thymine, Adenine, Guanine, Cytosine) determines the inherited traits.
A T
G C
Ribonucleic Acid (RNA) 11th• TranslationAmino acids are linked together to make a protein.
3 bases needed for 1 codon
Six Kingdoms of Life
• Archaebacteria – Extreme bacteria
• Eubacteria – Bacteria
• Protista – Amoebas, paramecium
• Fungi – Mushrooms, molds, yeast
• Plantae – Trees
• Animalia – Mammals—uhhhh people
Single cell vs. Multi-cell
• Bacteria
• Protista – little guys you look at under microscope
• Fungi – mushroom
• Plant
• Animal
Heterotroph vs. Autotroph -eat something -make own food
• Animalia
• Fungi
• Plantae
BOTHBacteriaProtista
Body Systems• Circulatory – heart / blood - Oxygen / food• Digestive – breaks down food• Nervous – electrical signals • Endocrine – hormones • Reproductive – sex• Integumentary – Skin• Skeletal – Bones - Structure • Respiratory – Lungs - Oxygen in, CO2 out• Muscular - Movement• Excretory – Eliminates wastes - Urine• Immune – Kills viruses
Viruses (not alive)• Viruses – cause disease
– ANTIBIOTICS DO NOT CURE THEM– ONLY IMMUNE SYSTEM
• AIDS, the common cold, small pox, influenza, and warts
Bacteria (alive)• Harmful - get antibiotics
– Strep Throat – Staph Infections
• Helpful – decomposers – septic tanks, rotting
meat– mutualism : intestines– cheese, yogurt
Evolution
• Mutations• Reproductions
Natural Selection- environment decides who lives… only tall trees- giraffes happy
• Commensalism – one species benefits, one is not affected
• Remora fish eat shark’s scraps; shark is not affected
Trophic levels
• Producer - green plant - photosynthesis
• Consumer – Must eat
• Decomposer
breaks down dead and waste
Chemical Change
• Change of temperature
• Production of light
• Production of a gas
• New thing formed
• Convection - heat carried from one place to another in a liquid or gas as molecules move in currents caused by density differences…liquids & gases
Waves• Transverse wave -
moves up and down as the energy travels right to left. Perpendicular
• example: light, ocean
• Longitudinal wave – moves back and forth as the energy travels right to left. Parallel
• Example: sound
Electricity- 10th• Series Circuit - a
circuit in which the current has only one path
• Parallel Circuit - a circuit in which the current can take more than one path