Working Scientifically
An aim must mention which two variables?
What is the function of the mitochondria?
Site of production & release of energy via cellular respiration.
What are the two types of vascular tissue in plants?
Xylem and Phloem
Who are TWO scientists associated with evolutionary theories?
Lamarck, Darwin, Wallace
Provide FOUR examples of abiotic factors?
Temperature, light intensity, water availability, soil pH, soil composition, wind etc etc etc
When would you expect to see a curved line of best fit on a graph?
If data is non linear OR exponential shaped
What are THREE factors that influence enzyme activity?
Surface area
Concentration
Temperature
pH
What is the correct order of hierarchal organisation in a living organism?
(WITH AN EXAMPLE) Structures of similar appearance but different function are said to be..
Homologous --> Bat wings and whale fins
Two different species competing for the exact same limited resources or occupying the same ecological niche cannot coexist in the long term.
What are ALL the required features of a line graph?
Title
Axis Headings + units
Even increments
Data plotted correctly
Correctly drawn line of best fit
What are the two types of electron microscopes, and what can you see with each?
Scanning electron microscope - Produces a 3d image of the sample
Transmission electron microscope - Produces an image of internal structures such as organelles
In which layer of a leaf does photosynthesis occur?
Palisade mesophyll
What are the FIVE criteria for natural selection to occur?
* Variation
* Selection Pressure
* Selective Advantage / increased survival+repro
* Selective disadvantage / decreased survival+repro
* Increase in frequency of favourable traits / allele
What is the formula for capture-mark-recapture?
What is the purpose of an experimental control?
"I am the movement of large molecules or ions through the cell membrane via protein channels.." What am I?
Facilitated diffusion.
What is the difference (with an example of each) between open and closed transport systems?
Open transport systems, seen in insects, does not have an enclosed vascular network, but transports nutrients and oxygen through free-moving fluid (haemolymph).
Closed transport systems, seen in humans, uses an enclosed vascular network of arteries veins and capillaries to transport nutrients and oxygen.
Identify the 3 types of adaptations, and give an example of each for an animal?
Structural - Thick blubber for insulation
Behavioural - Kangaroos licking paws for evaporative cooling
Physiological - Vasodilation in humans in warm environments.
What is the name of the rainforest plant we discussed in our case study which dominated prior to climate change and sclerophyll plants?
Nothofagus
What is the last part you should complete when writing a scientific journal? (NOT reference list)
Abstract
Where does light dependent and light independent photosynthesis occur, and what happens in each?
Light dependent photosynthesis occurs in the thylakoid membrane. H2O is split through light energy into hydrogen and oxygen. O2 is released out of the organelle / cell.
Light independent photosynthesis occurs in the stroma. hydrogen is fixed with CO2 to produce glucose.
Summarise the Source-to-Sink theory?
*
Describe how TWO examples of Biochemical analysis provide evidence for evolution
Can yap about
* DNA sequencing
* Amino acid sequencing
* Hybridisation
What are the 3 major stages of restoration of damaged land post-mining?
Stage 1 - Removal of wastes and contaminants from soil
Stage 2 - Return of essential nutrients, pH conditions, ground water in the soil.
Stage 3 - Reintroduction of native flora then fauna.