Download Fact sheet B2.1 Cells and tissues

Fact sheet B2.1 Cells and tissues
Cells and organelles
1. Name the type of cell below
2. Identify the parts of the cell (5)
3. Name the type of cell below
4. Identify the parts of the cell (8)
Animal cell
1. Cell membrane
2. Mitochondria
3. Cytoplasm
4. Nucleus
5. Ribosomes
Plant cell
6. Cell Wall
7. Cell membrane
8. Cytoplasm
9. Mitochondria
10. Chloroplast
11. Nucleus
12. Ribosomes
13. Vacuole
5. Give the function of the cell membrane
6. Give the function of the nucleus
Controls the passage of substances into and out of
cells
Controls the activities of the cell
7. Give the function of the cytoplasm
Where most chemical reactions take place
8. Give the function of the mitochondria
Where energy is released from aerobic respiration
9. Give the function of the ribosomes
Where protein synthesis occurs
10. Give the function of the chloroplast
Absorb light energy to make food
11. Give the function of the vacuole
Filled with cell sap
12. Give the function of the cell wall and say
what it’s made of (2)
13. Give the 2 different ways that cells can be
specialised (2)




Strengthens the cell
Made of cellulose
Have a structure that other cells don’t (e.g.
sperm cell has a tail)
They can have LOTS of a particular part (e.g.
muscle cells have LOTS of mitochondria)
Tissues, organs and organ systems
14. Define ‘tissue’
15. Define ‘organ’
A group of similar cells, eg muscle.
17. Describe the function of glandular tissue
A group of tissues that work together to perform a
specific function, eg the stomach.
A group of organs which work together to perform a
function, eg the digestive system or the
reproductive system.
Produce substances like hormones and enzymes
18. Describe the function of muscular tissue
Contracts for movement
16. Define ‘organ system’
19. Describe the function of the glandular tissue
in the stomach
20. Describe the function of the muscular tissue
in the stomach
21. Describe the function of the epithelial tissue
in the stomach
Stem cells
22. What happens when a cell differentiates?
23. Why do cells differentiate during the
development of multicellular organisms?
24. What are human stem cells?
25. Name the 2 places where human stem cells
are found
26. What could human stem cells potentially be
used for and why? (2)
27. When do most types of animal cells
differentiate?
28. When do most types of plant cells
differentiate?
29. What is cell division mostly restricted to in
mature animals? (2)
Bacteria and yeast
30. Name 2 types of single celled organisms
31. Name the type of cell below
32. Identify the parts of the cell (5)
Produces digestive juices to digest food
Contracts to churn food with digestive juices
Covers the outside and the inside of the stomach
It becomes specialised/ adapted to carry out a
specific function
To become specialised so that they can carry out
different functions
Cells which have the ability to develop into any kind
of human cell.
Embryos and adult bone marrow


To treat conditions such as paralysis
As they can be made to differentiate into
many different types of cells, eg nerve cells
At an early stage
They retain the ability to differentiate throughout
life
 Repair of tissues
 Replacement of lost/ dead cells
Bacteria and yeast
A bacterial cell
1.
2.
3.
4.
5.
Genes NOT in a distinct nucleus
Cell wall
Flagellum (not always present)
Cytoplasm
Membrane
33. Name the type of cell below
34. Identify the parts of the cell (4)
Diffusion
35. How do dissolved substances move into and
out of cells?
36. Define ‘diffusion’ (2)
37. What would happen if the difference in
concentration between 2 areas was
increased?
38. Which substance that is needed for
respiration passes through cell membranes
by diffusion?
Yeast cell
1. Nucleus
2. Cytoplasm
3. Membrane
4. Cell wall
Diffusion
1. The net movement of particles in a gas or
liquid
2. from an area of high concentration to an
area of low concentration.
The rate of diffusion would be faster
Oxygen