National 5 Biology - producing new cells

Name the cells, found in the early stages of an embryo’s development, which have the potential to develop into any type of specialised cell.

• Tissue stem cells

• Magic cells

• Embryonic stem cells

• Nerve cells

Complete the flowchart to show the levels of organisation found within a multicellular organism.

(a)  

State a reason, other than growth, why cells continue to be produced throughout life.

(a)  

Which of the following shows terms listed in order of increasing level of organisation in a multicellular organism?

• Organ -> Tissue -> System

• Organ --> System -> Tissue

• Tissue -> System -> Organ

• Tissue -> Organ -> System

Stem cells are

• specialised cells which can divide to produce new stem cells

• specialised cells which are unable to divide to produce new stem cells

• non-specialised cells which can divide to produce new stem cells

• non-specialised cells which are unable to divide to produce new stem cells.

Specialisation of cells in animals leads to the formation of

• tissues and organs

• meristems and organs

• stem cells and tissues

• stem cells and meristems.

Describe the feature of stem cells which gives them the potential to develop into many different types of cells, such as blood and nerve cells.

(a)  

Which of the following statements refer to processes involving stem cells? Tick all that apply.

• Growth of new skin

• Transmission of nerve impulses

• Muscle contraction

• Repair of broken bones

• Production of insulin

Identify the type of cell, present in bone marrow, which can divide and differentiate to produce red blood cells.

(a)  

A group of similar cells which carry out the same function is known as (a)   .