1. Cell Activity Flashcards
What is different about genetic material in bacterial cells?
Isn’t in nucleus
Has extra genes called plasmids separate from main genetic material
Circular strands of DNA in long strands
What are flagella’s?
Long strands of proteins
Used to move about
Five usual uses of bacteria to people
Makes a healthy gut Food production Sewage treatment Making medicines Decomposers in natural cycles
Four useful uses of fungus to people
Producing antibiotics
Alcohol production
Food production
Decomposers in food chains
Harms of bacteria
Diseases and decay
Produces anti toxins
Harms of Fungi
Diseases and decay or food stuffs
Turgor
The state of a plant Cell, when the pressure of the Cell wall on the cytoplasm cancels out the tendency for water, for water to move in via osmosis
Plasmolysis
The state of a plant Cell when large amounts of water have moved out via osmosis and the protoplasm shrinks and pulls away from the Cell wall. Usually seen in a lab, after flaccid state
Which type of cell division is used to make gametes?
Meiosis
Which type of cell division is used for growth, repair of tissues and replacement of cells?
Mitosis
What does diploid mean?
A pair of chromosomes
What does haploid mean?
Only one set of chromosomes
Before cells divide what must happen to the chromosomes?
They must be replicated
Why do gametes have one set of chromosomes?
To keep the number of chromosomes in the generations
They fuse to make the correct diploid number
What are stem cells?
Cells that can differentiate to form different types of cells
