QCAA Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about QCAA? On this page you'll find 24 study documents about QCAA.
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QCAA ATAR Biology Questions and answers, rated A+/ 2024/25 exam prediction paper, RATED A+
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QCAA ATAR Biology Questions and 
answers, rated A+ 
10% - -Only ______ of the energy is transferred from one level to another. Energy is lost through: 
-heat 
-metabolic processes 
-waste (faeces) 
Abiotic factors - -Nonliving components of environment: 
-climate 
-temp 
-O2/CO2 conc 
-soli pH 
Abundance - -The number of individuals in each species 
acceleration phase - -When growth rate is faster because there are: 
-greater numbers of individuals to produce increasingly more offspring 
ac...
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QCAA Biology Unit 3&4 Questions and answers, graded A+/ 2024/25 exam prediction paper, RATED A+
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QCAA Biology Unit 3&4 Questions and 
answers, graded A+ 
Carrying Capacity definition - -the size of the population that can be supported undefinedly on the 
available resources and services of that ecosystem. 
Polygenetic Inheritance definition - -when one characteristics is controlled by 2 or more genes 
Keystone species definition - -a plant or animal that plays a unique and crucial role in the way an 
ecosystem functions 
gene definition - -region/s of DNA that are made up of nucleotides;...
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QCAA ATAR BIOLOGY UNIT 3 Questions and answers, VERIFIED// 2024/25 exam prediction paper, RATED A+
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QCAA ATAR BIOLOGY UNIT 3 Questions 
and answers, VERIFIED/ 
Ecosystems - -a biological community of interacting organisms and their physical environments 
Limiting factor - -any biotic or abiotic factor that restricts the existence of organisms in a specific 
environment. examples include: the amount of water, amount of food, temperature, amount of space 
and availability of mates 
Hierarchical classification - -Arranging things into groups according to their similarities from larger 
genera...
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UNIT 3 - QCAA Exam questions and answers, rated A+/ 2024/25 exam prediction paper, RATED A+
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UNIT 3 - QCAA Exam questions and 
answers, rated A+ 
3.1.1.a - recognise that biodiversity includes - -the diversity of species, habitats and ecosystems. 
3.1.1.b - determine diversity of species using measures such as species evenness (relative species 
abundance) which is a measure of - -the population size of a particular species relative to the 
population size of other species within the community 
3.1.1.b - determine diversity of species using measures such as species percentage cover w...
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QCAA Biology EXAM BUNDLE | VERIFIED|
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QCAA Biology Unit 1 Questions and answers, rated A+/ 2024/25 exam prediction paper, RATED A+
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QCAA Cognitive Verbs Exam Studyguide
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QCAA Cognitive Verbs Exam Studyguide ...
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QCAA Biology Unit 1 and 2 Exam Questions and answers, rated A+/ 2024/25 exam prediction paper, RATED A+
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QCAA Biology Unit 1 and 2 Exam 
Questions and answers, rated A+ 
explain, using an example, how the arrangement of internal membranes can control biochemical 
processes - -- the inner membrane folds and creases itself to expand then amount of surface area it 
has 
- this is called the cristae 
- this means there is a greater area for enzymes to work and cause reactions 
explain how biochemical processes are controlled and regulated - -- enzymes are catalysts 
- enzymes are proteins folded and ...
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QCAA Biology Unit 3 Exam Questions and answers, rated A+/ 2024/25 exam prediction paper, RATED A+
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QCAA Biology Unit 3 Exam Questions 
and answers, rated A+ 
What is biodiversity? - -The variety of living organisms in a particular habitat. Built from species, 
genetic diversity and an ecosystem. 
How do you determine diversity using species richness? - -Count the number of organisms that 
belong to the species. 
What is species evenness/species abundance? - -Amount of species within a particular area 
What is percentage cover? - -Area covered by a species. 
What is percentage frequency? - ...
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QCAA Biology Unit 1 Questions and answers, rated A+/ 2024/25 exam prediction paper, RATED A+
- Exam (elaborations) • 3 pages • 2024
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QCAA Biology Unit 1 Questions and 
answers, rated A+ 
Macromolecules - -A very large organic molecule composed of many smaller molecules 
Four main types of macromolecules - -proteins, carbohydrates, lipids, nucleic acids 
Chemical composition of a carbohydrate - -C-H-O 
[Think C₆H₁₂O₆] 
Polymer - -A long molecule consisting of many similar or identical monomers linked together. 
Autotroph - -An organism that makes its own food 
Heterotroph - -An organism that obtains energy from the fo...
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QCAA chemistry Unit 4 Topic 1: Properties and structure of organic mater/ 2024/25 exam prediction paper, RATED A+ials, Questions and answers/
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QCAA chemistry Unit 4 Topic 1: 
Properties and structure of organic 
materials, Questions and answers/ 
What are the two types of structural isomers? 
Positional isomer: Where a functional group is bonded at different locations on an organic molecule. 
Chain isomer: Where an organic molecule contains branching. 
A geometric isomer is a type of ______isomer 
Stereoisomer 
What is a geometric isomer? 
A molecule with the same structural formula but with different arrangement of atoms in space as...
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