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CyfarthfaB2Cells
Question | Answer |
---|---|
Which microscope magnifies 1000x and gives a 2D image? | Light |
What are the advantages of a light microscope? | Views live cells, portable |
Which microscope magnifies 1000000x? | Electron |
What is the biggest disadvantage of the electronic microscope? | Can only view dead cells |
Which microscope produces 3D images? | Laser |
Which 3 structures are found in animal cells? | Nucleus, cell membrane, cytoplasm |
With three structures are found in plant cells but not in animal cells? | Vacuous, chloroplast, cell wall |
Where chemical reactions take place | Cytoplasm |
Controls what enters and leaves the cell | Cell membrane |
Contains DNA | Nucleus |
Where photosynthesis takes place | Cloroplast |
Stores cell sap | Vacuole |
Made of cellulose, gives the cell shape and sipport | Cell wall |
Specialised cell that carries oxygen | Red blood cell |
Adaptation of red blood cells | Large surface area, no nucleus |
Specialised cell that absorbs water into the roots | Root hair cell |
Adaptation of root hair cells | Large surface area, no chloroplasts |
Specialised cell found lining the airways | Ciliated epithelial cells |
Adaptations of ciliated epithelial cells | Hair - like cilia to move mucus |
Specialised cell that is the male gamete | Sperm |
Adaptations of sperm cells | Tail to swim, special coating on its head to burrow into the egg |
Specialised cell that is found in the leaf | Palisade cell |
Adaptations of the palisade cell | Large number of chloroplasts, large vacuole to push chloroplasts close to cell membrane to absorb more light |
Structures found in bacterial cell | Cell wall, cytoplasm, cell membrane, no nucleus |
How bacteria reproduce | Splitting in half |
Structure of a virus | Protein coat and a strand of DNA |
How do viruses reproduce? | Inside a host cell |
Structure of unicellular algae | |
How do algae reproduce? | Either as asexualy by producing spores or sexually by fusion of gametes |
Structure of yeast | |
How yeast cells reproduce | Budding |
Definition of a stem cell | Undifferentiated cell that can develop into many different specialised cells |
Two places where we can get human stem cells from | Embryos or bone marrow |
Why is stem cell research controversial? | Human embryos ate destroyed |
Why are bone marrow stem cells a good choice | Less chance of rejection |
Location of stem cells in plants | Meristems |
Cell wall, cell membrane, cytoplasm, nucleus | |
Two types of cell division | Mitosis & meiosis |
Number of daughter cells produced by mitosis | 2 |
Number of daughter cells produced my meiosis | 4 |
Daughter cells produced by mitosis are genetically ..... | Identical |
Daughter cells produced by meiosis are genetically... | Different |
Function of mitosis | Growth and replace damaged cells |
Function of meiosis | Producing gametes |