PBS Unit 3

Which component is needed for clotting?

• white blood cells
• red blood cells
• platelets
• plasma

Red blood cells are produced by the

• liver
• heart
• bone marrow
• pancreas

Tags

NGSS.HS-LS1-4

How many chromosomes do humans have?

• 23 chromosomes

• 23 pairs

• 46 pairs

• 48 chromosomes

How many cells are created at the end of meiosis?

• 2
• 4
• 6
• 8

How many copies of the sickle cell gene are needed for a person to have the disorder?

• 0
• 1
• 2
• 3

If two parents who do NOT have a disorder have a child with a disorder, the disorder is

• dominant
• recessive
• neutral

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A person with an infection would have a high ______ count.

• white blood cell
• red blood cell
• platelet
• plasma

What is the term for distinct segments of DNA that differ from person to person?

• genes
• traits
• chromosomes
• nucleotides

Sickle red blood cells have a decreased ability to carry 

• nutrients
• wastes
• oxygen
• proteins

Tags

NGSS.HS-LS1-7

If someone has a low hematocrit count, then they have a reduced amount of what?

• plasma
• red blood cells
• white blood cells
•  platelets