The Roles of Blood

What is made in the bone marrow? 

• blood cells
• plasma
• nutrients

Red blood cells have a nucleus. 

• true
• false

Platelets are responsible for clotting blood and repairing damaged blood vessels. 

• true
• false

Which part of human blood carries hormones and nutrients?

• plasma

• platelets

• red blood cells

• white blood cells

Platelets are a part of blood that help in the:

• formation of hemoglobin

• formation of a clot

• release of anitbodies

• absorption of amino acids

What is a difference between red blood cells and white blood cells?

• Red blood cells contain hemoglobin, but white blood cells do not.

• Red blood cells can move on their own, but white blood cells cannot.

• Red blood cells contain a nucleus, but white blood cells do not.

• Red blood cells fight foreign bacteria, but white blood cells do not.

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An infection in the body might result in a sudden

• decrease in the activity of antigens produced by the mitochondria

• decrease in the amount of DNA present in the nuclei of cells

• increase in the activity of white blood cells

• increase in the number of red blood cells

Which human system is responsible for delivering blood to organs?

• respiratory

• circulatory

• skeletal

• muscular

What part of blood is responsible for fighting infections?

• Red Blood Cells
• White Blood Cells
• Platelets
• Plasma

The liquid part of blood

• plasma
• water
• cytoplasm
• collagen