Organisation of the organism
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What are cells?
The small building blocks that make up all living organisms
What is the function of a NUCLEUS
Controls all activities in the cell
What is the function of a CYTOPLASM
where chemical reactions happen
What is a function of a CELL MEMBRANE
Forms a barrier Keeps contents of cell inside Allows simple substances to enter and leave Partially PERMEABLE
What is a function of a MITOCHONDRIA
Release energy during aerobic respiration
What is a function of a RIBOSOME
Protein Synthesis
What is a function of a CHLOROPLAST (only in plant cells)
Photosynthesis Stores starch
What is a function of a CELL WALL (only in plant cells)
Stops cells from bursting Gives shapes to cells Allows water and dissolved substances to pass
What is a function of a SAP VACUOLE (only in plant cells)
Stores ions & sugars Full of water to maintain shape
How do you calculate Magnification?
Image size/Actual size
What are the 8 specialized cells?
Ciliated cells Root hair cells Xylem vessels Neurons Red blood cells Palisade mesophyll cells Sperm cells Egg cells
What is the shape and function of the RED BLOOD CELL?
Flat Discs Transport Oxygen
What is the shape and function of the CILIATED CELL?
Have a cilia that moves Keep the air passage free from dust
What is the shape and function of the ROOT HAIR CELLS?
Long & Thin Absorb water from the soil
What is the shape and function of the NERVE CELLS?
Hollow tube Transmit electrical impulses
What is the shape and function of the XYLEM VESSELS?
Like Wires Transport water and ions
Define TISSUE
A group of similar cells
Define ORGAN
Groups of tissues working together
Define SYSTEM
A group of organs working together
Which structure is only found in plant cells? A. Cell membrane B. Chloroplast C. Cytoplasm D. Nucleus
B
Which structure is only found in plant cells? A. Cell membrane B. Chloroplast C. Cytoplasm D. Nucleus
B
Which structure is only found in plant cells? A. Cell membrane B. Chloroplast C. Cytoplasm D. Nucleus
B
What is the function of root hair cells? A. Absorption of water B. Growth of roots C. Protection D. Transport of sugars
A
The substances that move in and out of mitochondria are: A. CO2 in, O2 out, nutrients in B. CO2 out, O2 in, nutrients in C. CO2 in, O2 in, nutrients out D. CO2 out, O2 out, nutrients out
B