Share Cells Year 7
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What are cells?
The basic units of all living organisms.
Why do we need a microscope to see cells?
Because cells are too small to be seen with the naked eye.
Which part of a plant cell provides strength and structure?
Cell wall
What material makes up the plant cell wall?
Cellulose
What is the function of the cell membrane?
It controls what goes in and out of the cell.
What happens in the cytoplasm of a plant cell?
Chemical reactions that keep the cell alive.
Which part of the plant cell controls what enters and leaves the cell, but is not responsible for giving the cell its shape—and how can you tell it apart from the structure that does give the cell its shape?
The cell membrane controls entry and exit. The cell wall gives shape. The membrane is thin and inside the wall; the wall is strong and outside.
Name five parts of a plant cell that start with the letter C.
Cell wall, Cell membrane, Cytoplasm, Chloroplast, Chlorophyll
What part of the cell controls its activities?
The Nucelus
All plant cells have chloroplasts.
False
What are dendrites for?
To collect signals from other nerve cells.
Which two of the following structures are found only in plant cells and not in animal cells?A) NucleusB) ChloroplastC) Cell wallD) Mitochondrion
Chloroplast amd Cell Wall
Two plant cell parts help maintain the cell's shape, but only one is made of cellulose. Name both parts, and state which one is made of cellulose.
Cell wall and sap vacuole. The cell wall is made of cellulose.
One specialised animal cell has no nucleus to make space for more of something else.Name the cell, and what replaces the nucleus.
Red blood cell; haemoglobin replaces the nucleus.
Which specialised animal cell uses long cytoplasm strands to send signals quickly, and what are these strands called?
Neurone; axon and dendrites.
Which specialised plant cell lacks chloroplasts, and why is that useful for its function?
Root hair cell; it doesn’t need chloroplasts because it grows underground, where there is no light for photosynthesis.
