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Term 2 Core Science - Coggle Diagram
Term 2 Core Science
Chapter 2: Cell Structure and Function
Introducing Cells and Biomolecules
Cell Theory
All living things are made of one or more cells.
The cell is the smallest unit of life.
All new cells come from pre-existing cells.
Main ingredient
Water makes up more than 70 % of a cell’s volume
and is essential for life.
Macromolecules
It is also essential for life.
Macromolecules are large molecules (polymers) that form when
smaller molecules (monomers) join together.
Biomolecules
Nucleic Acids
Control cell and contain genetic information
Protein
necessary
for nearly everything cells do
Proteins are long chains of amino
acid molecules.
Cells contain many different proteins each with a unique function.
Lipid
Lipids are used to store energy (fat) and for cell communication.
Carbohydrates
Carbohydrates store energy and provide structural support.
Cells
Cell wall
A cell wall helps maintain the cell’s shape
and gives structural support.
It protected a cell
Cell membrane
Every cell is surrounded by membrane
Cell membranes are mostly made of two different macromolecules—
proteins and phospholipids.
A cell membrane protects the cell from the outside environment.
Cytoplasm and the Cytoskeleton
Cytoplasm is most fluid in cell.
The cytoskeleton is a network of proteins that
are joined together.
Cell Appendages
It help the cell with movement
Cell type
Prokaryotic
The genetic material are not surrounded by membrane
Eukaryotic cell
The genetic material is surrounded by a membrane
Cell Organelles - Part 1
Nucleus
directs cell activities
and contains genetic information stored in DNA.
DNA are organised into group called chromosome. It contained in nucleus
It also have nucleolus. It makes ribosomes, structures that are involved in the
production of proteins.
Nuclear envelope surrounded the nucleus and let certain molecules move into and out of the nucleus
Rough ER
Protein production
Smooth ER
Make lipid
Help remove harmful substances from a cell
Golgi apparatus
It prepare protein for their function and then packed them in vesicle
Transport substance
Lysosome is vesicle that help break down and recycle cellular component.
Vacuole
It store food, water and waste material
Cell Organelles - Part 2
Cellular respiration
occur in mitochondria
Use glucose to produce ATP
Photosynthesis
Occur in chloroplast
Use light energy to make glucose
Cell Membrane and Movement
Membrane control the movement of substances in an out of a cell.
Semi-permeable
Phospholipids
Lipid bilayer
Also includes proteins
Channel and carrier proteins
Fluid mosaic model
passive Transport
Diffusion
Osmosis
High to low concentration
Active Transport
Low to high concentration
Exocytosis, Endocytosis
Cells and Energy
Cell respiration
ATP
Photosynthesis
Chapter 1: Classifying and Exploring Life
Kingdoms
Animalia
Fungi
Plantae
Protista
Monera
Binomial nomenclature
Scientific name
Ursus maritimus
The first word (ursus) for example is the genus name and should be capitalised. The second word (maritimus) in this case is the species Identifier and should be in lowercase. Both terms should be in Italics when typed and underlined when written.
Kingdom
Phylum
Class
Family
Genus
Species
Carolus Linnaeus first classified animals.
Domains
Bacteria
Archaea
Eukarya
Classifying Tools
Dichotomous Key
Cladogram
Chapter 3: Cell to Organism
Unicellular and Multicellular
Multi has nucleus, Uni doesn't.
Multi has membrane-bound organelles, Uni doesn't
Uni is always Prokaryote while Multi can be both Prokaryote and Eukaryote
Uni in groups is called a colony
Unicellular Eukaryotes are all protists.
Cell differentiation
Animal = Stem cell
Plant = Meristem
In tips of roots and shoots.
Tissues
Groups of similar cells working together.
Types
Connective tissue
Provides structure and support, connects other types of tissues together.
Epithelial tissue
Acts as a protective outer layer of the skin and lining of major organs and internal body cavities.
Muscle tissue
Causes movement
Nervous tissue
Carries messages to and from the brain.
Plant tissues
Dermal tissue
Provides protection and reduces water loss.
Ground tissue
Provides storage and support and is where photosynthesis takes place.
Vascular tissue
Transports water and nutrients from one part of a plant to the other.
Organ systems
Digestive system
Circulatory system
Skeletal System
Nervous system
Muscular system
Respiratory system
Reproductive system
Excretory system
Integumentary system (skin)
Immune system
Lymphatic system
Plant organ systems
Shoot system
Root system
Specialised cell
Tissue
Organ
Organ system
Organism