Cells Flashcards
______ are the basic units of life.
Cells
Groups of cells work together to form ______.
tissues
Groups of tissues work together to form ______.
organs
Groups of organs work together to form ______.
organ systems
Organ systems work together to form ______.
organisms
Are ears cells, tissues or organs?
organ
Is blood a cell, a tissue or an organ?
tissue
Are bones cells, tissues or organs?
tissue
Is pollen a cell, a tissue or an organ?
cell
Is the outer layer of skin a cell, a tissue or an organ?
tissue
Are muscles cells, tissues or organs?
tissue
Are nerves cells, tissues or organs?
cell
What is the tough outer covering of a plant cell called?
cell wall
Which part of a cell controls all its activities?
nucleus
Which part of a cell controls what enters and leaves a cell?
The cell membrane
What is the bag of liquid in the centre of a plant cell?
vacuole
What is the jelly-like substance in which chemical reactions take place?
Cytoplasm
Which part of the cell contains chromosomes and controls the activities of the cell?
Nucleus
What is the strong outer covering found around plant cells but not animal cells?
Cell wall
What is the thin flexible covering, found around all cells, that controls what enters and leaves the cell?
Cell membrane
What is the green covering found in some plant cells?
Chlorophyll
What is the main function of the white blood cell?
It fights infection around the body.
What is the main function of the red blood cell?
It transports oxygen around the body
What is the main function of the ciliated cell?
It traps mucus in the body.
What is the main function of the egg cell?
It carries the mother’s genetic information.
What is the main function of the sperm cell?
It carries the father’s genetic information and fertilises the egg cell.
Which structures are present in animal and plant cells?
Nucleus, cell membrane, cytoplasm
Which structures are present only in plant cells?
Chloroplast, cell wall, vacuole
What is the function of the chloroplast?
Makes glucose by photosynthesis
What is the function of the cell membrane?
Controls what enters and leaves the cell
What is the function of the cell wall?
Supports and protects the cell
What is the function of the cytoplasm?
Metabolic reactions occur here
What is the function of the vacuole?
Stores water and mineral ions
What is the function of the nucleus?
Controls the cell
How is a sperm cell specialised?
It is designed to fertilise eggs, small, has a long tail that provides movement so it can swim and find an egg cell and the head contains enzymes which allow it to digest into an egg cell and join with it.
How is the egg (ovum) cell specialised?
It is designed to be fertilised, large and bulky and contains yolk which provides a large food store for the new cell being formed.
How is the palisade cell specialised?
It is designed for photosynthesis, tall, has a large surface area to absorb water and minerals and is packed with chloroplasts to help make plant food.
How is the ciliated cell specialised?
It is designed to stop lung damage, they have tiny hairs called cilia that sweep mucus with trapped dust and bacteria back up the throat
How is the root hair cell specialised?
It is designed for absorbing water and minerals, has a large surface which helps it to absorb the water and minerals and it has a thin cell wall that makes it easy for minerals to pass through.
How are nerve cells (neurones) specialised?
They are long, have connections at each end and can carry electrical signals.
How is the red blood cell specialised?
It is designed to carry oxygen, has a large surface area, for oxygen to pass through, has no nucleus and contains haemoglobin, which joins with oxygen.
