6.3 IB Defence Against Disease

Bacteria that are harmful to people are called _____.

• Pathogen
• Lymph Nodes
• Macrophages
• T Cells 

Which of the following is the body’s first line of defense against disease?

• vaccines
• white blood cells
• antibodies
• skin

How do antigens protect the body from diseases?

• They make white blood cells.
• They produce mucus, which washes away germs.
• They help destroy T cells.
• They alert the immune system when pathogens enter the body.

What is the name of the body's defence system against diseases?

• The immune system
• The control system
• The vascular system
• The endocrine system

What is the name of the white blood cell that ingests micoorganisms?

• Antitoxins
• Antigens
• Phagocytes
• Platelets

What is the name of the part of the blood that aids clotting?

• Antitoxins
• Antigens
• Phagocytes
• Platelets

What type of cell is a bacteria cell?

• Protist
• Vector
• Karyoke
• Prokaryotic

What is an antigen?

• A protein produced by white blood cell
• A type of white blood cell
• A Vaccine
• A foreign molecule

Tissue of the body that come into direct contact with the outside...

• respiratory tract

• urogenital tract

• gastrointestinal tract

• all

Phagocytosis is when:

• Allows some things to pass through but not others
• Movement of water from high concentration to low concentration
• Movement of substances from area of high concentration to area of low concentration
• Cell membrane surrounds & engulfs large particles