8 Questions
What is the basic unit that can replicate independently?
Cell
Which organisms are made up of various types of cells?
Animals
What do plant cells have for photosynthesis?
Chloroplasts
Which type of cells have a single circular chromosome/nucleoid containing all genes?
Bacterial cells
What is an example of diffusion mentioned in the text?
Movement of perfume particles through a room
What acts as a barrier for substances to move in and out of a cell?
Cell membrane
In what condition is the carbon dioxide concentration lower in a photosynthesising leaf cell than in its environment?
On a bright day
When is the carbon dioxide concentration higher inside a leaf cell compared to the environment?
At night
Study Notes
- Cells are the basic building blocks of life, the smallest unit that can replicate independently.
- Animals and plants are multicellular organisms made up of various types of cells, while bacteria are unicellular organisms.
- Both animal and plant cells have a cell membrane that controls substance entry and exit, a nucleus with DNA, and cytoplasm filled with organelles.
- Animal and plant cells have mitochondria for energy production and ribosomes for protein synthesis.
- Plant cells have a cell wall made of cellulose for support, a permanent vacuole for storing nutrients, and chloroplasts for photosynthesis.
- Bacterial cells have a single circular chromosome/nucleoid containing all genes, no mitochondria or chloroplasts, and some may have flagella for movement and plasmids for extra genes.
- Plant and animal cells are eukaryotic, while bacterial cells are prokaryotic.
Test your knowledge of cell structure and function with this quiz. Learn about the differences between animal, plant, and bacterial cells, including their organelles, genetic material, and unique characteristics.
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