cell types
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Cell Types. Try these. Balance book on head Hop on one leg. Specialisation increases the ability of an organism to carry out complex tasks Some tasks can be completed better by some cells than others. Cell specialisation. - PowerPoint PPT PresentationTRANSCRIPT
Cell Types
Try these
• Balance book on head
• Hop on one leg
Specialisation increases the ability of an organism to carry out complex tasks
Some tasks can be completed better by some cells than others.
Cell specialisation
Generalised cells can divide and specialise (eg meristem cells in plants & stem cells in animals)
Specialised cells have specific structure and function, eg epithelial cells, muscle cells
Active cells have more mitochondria, eg animal cells have more than plant cells
Connective tissue
Red blood cellsNo organelles (“dead”)
Adipose tissueFat-storage cells
Epithelia – linings & covers
Goblet cells – secrete mucous
Muscles cells
Need lots of energy so have lots of mitochondria
Liver cellsLi
ver ce
llwith
lots
of
mitoc
hond
ria
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Key Words
Quick Quiz
Key words• Animal cell• Plant cell• Active cells• Mitochondria• Epithelium• Muscle • Nervous tissue• Connective tissue
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Quick quizTrue / False?
1. Animal cells usually have more mitochondria than plant
2. Centrioles are only found in plant cells
3. Plant cells have a large vacuole
4. Chloroplasts are found in all photosynthesising plant cells
5. Plant cell walls prevent cells bursting
6. Animal cells lose water when placed in pure water
7. Plant cells undergo plasmolysis when placed in pure water
8. Active cells (eg muscle & liver) contain many mitochondria
9. Red blood cells are animal cells so they have a nucleus
10. Goblet cells produce mucous
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Answers
Quick quizTrue / False?
1. Animal cells usually have more mitochondria than plant T
2. Centrioles are only found in plant cells F
3. Plant cells have a large vacuole T
4. Chloroplasts are found in all photosynthesising plant cells T
5. Plant cell walls prevent cells bursting T
6. Animal cells lose water when placed in pure water F
7. Plant cells undergo plasmolysis when placed in pure water F
8. Active cells (eg muscle & liver) contain many mitochondria T
9. Red blood cells are animal cells so they have a nucleus F
10. Goblet cells produce mucous T
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