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Chap 7 + 8 / Unit 2
Cell Structure and Diversity (Leaving Cert Exam Questions)
Question | Answer |
---|---|
What are phospholipids made of? | Phosphate head and lipid tail |
How can molecules pass through the cell membrane? | Diffusion or osmosis or active transport |
Why can aerobic respiration can be different in some cells? | May need different amounts of energy |
What type of cells have nucleus and membrane-enclosed organelles ? | Eukaryotic |
What type of cells does not have a nuclei and membrane-enclosed organelles? | Prokaryotic (also includes bacterial cells) |
What else beside a nucleus contains genetic material? | Chloroplast or mitochondria |
Where is the cell membrane in plant cell? | Immediately inside the cell wall |
What is selectively permeable (Cell Membrane)? | Only some substances are allowed through |
What is passive transport? | No (or little) energy needed |
What's osmosis? | Diffusion that requires the movement of water |
What's the function of the ribosome? | Protein synthesis (Makes protein) |
What tissues do plants have? | Dermal and Vascular |
Dermal tissue function? | Is designed to protect the plant |
Vascular tissue function? | Transports material |
What tissues do animals have? | Connective and Nervous |
Connective tissue function? | Join and supports other body structures |
Nervous tissue function? | To carry electrical impulses from the brain to the spinal cord |
What's the difference between a tissue and an organ? | Organ is a group of tissues (working together) |
Tissue culture | Growth of cells on a (nutrient) medium outside the organism |
Requirements for tissue culture | Sterile conditions / suitable pH / necessary nutrients |
Tissue | A group of similar cell with the same function |