Blood Cells & Platelets
Blood Cells & Platelets

Blood Cells & Platelets

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A question pack on blood cells and platelets from the Open Learning Initiative.

This content is licensed under the Creative Commons Attribution 3.0 Unported License.

Blood Cells & Platelets Q1

Hemoglobin is made of globin proteins, a planar heme molecule and an iron ion. Which is the correct order of size from largest to smallest?

A

iron, heme, globin

B

heme, iron, globin

C

globin, heme, iron

D

heme, globin, iron

Blood Cells & Platelets Q2

The structure shown is a(n) ______________.

question description
A

beta globin

B

complete hemoglobin molecule

C

heme group

D

alpha globin

Blood Cells & Platelets Q3

Decide whether or not the following statement represents a way to transport oxygen.

Oxygen binds to the iron in the hemoglobin

A

yes

B

no

Blood Cells & Platelets Q4

Decide whether or not the following statement represents a way to transport oxygen.

Four oxygens binds to one hemoglobin

A

yes

B

no

Blood Cells & Platelets Q5

Decide whether or not the following statement represents a way to transport oxygen.

Hb → HbO2

A

yes

B

no

Blood Cells & Platelets Q6

Decide whether or not the following statement represents a way to transport oxygen.

Oxygen is converted to bicarbonate

A

yes

B

no

Blood Cells & Platelets Q7

Decide whether or not the following statement represents a way to transport oxygen.

Oxygen is stored in the mitochondria of red blood cells

A

yes

B

no

Blood Cells & Platelets Q8

How do red blood cells transport carbon dioxide?

A

Carbon dioxide is transformed into carbonic anhydrase in the presence of bicarbonate.

B

Carbonic anhydrase transforms most carbon dioxide into bicarbonate.

C

Carbon dioxide is not transported through the cardiovascular system.

D

Most carbon dioxide binds to hemoglobin.

Blood Cells & Platelets Q9

Which of the following is not a function of red blood cells?

A

Transport gas required for aerobic cellular respiration to the cells.

B

Transport waste products produced by cellular respiration to the lungs.

C

Transports the majority of carbon dioxide to the lungs.

D

Transport oxygen to the cells of the body.

Blood Cells & Platelets Q10

Which of the following proteins allows red blood cells to transport oxygen?

A

Myoglobin

B

Hemoglobin

C

Gama globulin

D

Alpha globulin

Blood Cells & Platelets Q11

How many days do red blood cells exist before they are destroyed?

A

1.2 days

B

12 days

C

120 days

D

1200 days

Blood Cells & Platelets Q12

Which protein molecule is attached to iron molecules so it can be recycled and moved in the bloodstream?

A

ferritin

B

Transferrin

C

hemosiderin

D

hemoglobin

Blood Cells & Platelets Q13

When RBCs are broken down at the end of their lifespan, most of the hemoglobin components are recycled. Which component is not recycled?

A

alpha globin

B

beta globin

C

heme group

D

iron

Blood Cells & Platelets Q14

Red blood cells have a limited lifespan because ______________.

A

they cannot “fix” damage that accumulates over time

B

they express self proteins that degrade, causing immune cells to attack them

C

they experience apoptosis

D

their high mitotic rate causes mutations that accumulate over time

Blood Cells & Platelets Q15

In the hours and days after donating blood, what would you expect to happen to both your erythropoietin levels and your reticulocyte count?

A

Erythropoeitin will decrease and reticulocyte count will increase.

B

Erythropoeitin will increase and reticulocyte count will decrease.

C

They will both increase.

D

They will both decrease.

Blood Cells & Platelets Q16

Which of the following is not matched correctly with its description?

A

Erythropoiesis occurs in the bone marrow.

B

Red blood cells have a life span of 30 days.

C

Transferrin can carry iron through the blood stream.

D

Macrophages of the spleen or liver remove damaged RBC.

Blood Cells & Platelets Q17

Which blood type can be safely transfused into anyone?

A

AB+^+

B

O+^+

C

AB^-

D

O^-

Blood Cells & Platelets Q18

Which type of anemia is not properly matched with its origin?

A

Iron deficiency anemia: Poor dietary intake of iron

B

Pernicious anemia: Blood loss

C

Hemolytic anemia: Toxins or drugs

D

Sickle cell anemia: Inherited disease most common among African Americans

Blood Cells & Platelets Q19

Leukocytes play major roles in immunity, with some cells having a larger role in nonspecific immunity (can attack a large range of invaders), while others function in specific immunity (only attack specific invaders). Identify whether the following is specific or non-specific.

Neutrophil

A

specific

B

non-specific

Blood Cells & Platelets Q20

Leukocytes play major roles in immunity, with some cells having a larger role in nonspecific immunity (can attack a large range of invaders), while others function in specific immunity (only attack specific invaders). Identify whether the following is specific or non-specific.

B-lymphocyte

A

specific

B

non-specific

Blood Cells & Platelets Q21

Leukocytes play major roles in immunity, with some cells having a larger role in nonspecific immunity (can attack a large range of invaders), while others function in specific immunity (only attack specific invaders). Identify whether the following is specific or non-specific.

Basophil

A

specific

B

non-specific

Blood Cells & Platelets Q22

Leukocytes play major roles in immunity, with some cells having a larger role in nonspecific immunity (can attack a large range of invaders), while others function in specific immunity (only attack specific invaders). Identify whether the following is specific or non-specific.

T-lymphocyte

A

specific

B

non-specific

Blood Cells & Platelets Q23

Leukocytes play major roles in immunity, with some cells having a larger role in nonspecific immunity (can attack a large range of invaders), while others function in specific immunity (only attack specific invaders). Identify whether the following is specific or non-specific.

Monocytes

A

specific

B

non-specific

Blood Cells & Platelets Q24

Which of the following is not matched correctly with its description?

A

Neutrophils are the first to respond to a bacterial infection.

B

Basophils release histamine during the inflammatory response.

C

Monocytes phagocytize microbes and tissue debris.

D

Eosinophils release antibodies to prevent microbial growth.

Blood Cells & Platelets Q25

A condition characterized by an abnormally high number of mature WBCs is ______________

A

leukocytosis

B

leukopenia

C

neutropenia

D

leukemia

Blood Cells & Platelets Q26

Neutropenia can be caused by ______________.

A

bone marrow dysfunction

B

leukemia

C

certain infections

D

All of the above

Blood Cells & Platelets Q27

Which of the following formed elements of the blood lack a nucleus?

A

platelets

B

WBCs

C

RBCs

D

platelets and RBCs

Blood Cells & Platelets Q28

What prevents platelets from forming a platelet plug when an injury is not present?

A

low prostacyclin levels

B

exposed collagen fibers

C

vasodilation

D

high prostacyclin levels

Blood Cells & Platelets Q29

What makes up the largest fraction of blood?

A

platelets

B

erythrocytes

C

leukocytes

D

plasma

Blood Cells & Platelets Q30

Why do erythrocytes appear on the bottom of the tube after it has been centrifuged?

A

they contain heme

B

they carry oxygen

C

they are less dense than water

D

they are the biggest cells

Blood Cells & Platelets Q31

What is the function(s) of the smallest portion of the blood?

A

carry oxygen and defend against infection

B

carry oxygen and regulate temperature

C

defend against infection and contribute to hemostasis

D

defended against infection and regulate water homeostasis

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