TEAS 7 Science Practice Questions: Immune System

Which of the following is the primary function of the immune system?

A. Produce hormones

B. Protect the body from pathogens and disease

C. Regulate body temperature

D. Digest food

B. Protect the body from pathogens and disease

Memory Tick: IMMUNE = I'M IN defense

Think: Immune System = Body's Army

Which cells are responsible for attacking pathogens such as bacteria and viruses?

A. Red blood cells

B. Platelets

C. White blood cells

D. Bone cells

C. White blood cells

TEAS Memory Tick: White = Fight White blood cells fight infections.

Where are many immune cells produced?

A. Liver

B. Bone marrow

C. Pancreas

D. Gallbladder

B. Bone marrow

Memory Tick: Bone Marrow = Blood Factory

Remember: ➡️ Bone marrow makes blood cells, including immune cells.

Which structure filters lymph and helps fight infection?

A. Kidneys

B. Stomach

C. Lymph nodes

D. Heart

C. Lymph nodes

Memory Tick: Nodes = Checkpoints

Think of lymph nodes as security checkpoints looking for germs.

What is a pathogen?

A. A type of antibody

B. A disease-causing microorganism

C. A white blood cell

D. A vitamin

B. A disease-causing microorganism

TEAS Memory Tick: Pathogen = "Path to disease"

Examples:Bacteria, Viruses, Fungi, Parasites

Which immune response is the body's first line of defense?

A. Adaptive immunity

B. Innate immunity

C. Antibody immunity

D. Memory immunity

B. Innate immunity

Memory Tick: INNATE = IMMEDIATE

Innate immunity responds quickly and nonspecifically.

Which of the following is an example of innate immunity?

A. Antibody production after vaccination

B. Memory B cells

C. Skin acting as a barrier

D. Plasma cells

C. Skin acting as a barrier

Memory Tick: Skin Stops Stuff

Skin = First barrier against pathogens.

What is the role of phagocytes?

A. Produce hormones

B. Destroy pathogens by engulfing them

C. Carry oxygen

D. Produce bile

B. Destroy pathogens by engulfing them

TEAS Memory Tick: PHAGO = EAT, Phagocytes literally "eat" germs.

Adaptive immunity differs from innate immunity because adaptive immunity:

A. Is nonspecific

B. Has memory

C. Is always immediate

D. Includes skin barriers

B. Has memory

TEAS Memory Tick: A for Adaptive = A for Remember After, Adaptive immunity remembers previous infections.

Which cells are primarily involved in adaptive immunity?

A. Red blood cells

B. Bone cells

C. B cells and T cells

D. Platelets

C. B cells and T cells

Memory Tick: B = Build antibodies T = Target infected cells

Which immune cells produce antibodies?

A. T cells

B. Neutrophils

C. B cells

D. Macrophages

C. B cells

Memory Tick: B = Builds antibodies

What is the main advantage of adaptive immunity?

A. It responds first.

B. It forms memory for future protection.

C. It produces red blood cells.

D. It digests pathogens.

B. It forms memory for future protection.

TEAS Memory Tick: Vaccines Work Because of Memory

If you see: Vaccine, Long-term protection, Memory cells ➡ Think Adaptive Immunity

A patient recovers from chickenpox and is unlikely to get it again. Which immune feature explains this?

A. Skin barrier

B. Inflammation

C. Immune memory

D. Platelet formation

C. Immune memory

TEAS Memory Tick: Once Learned, Never Forgotten, Adaptive immunity remembers pathogens.

Neutrophils and macrophages are examples of:

A. Hormones

B. White blood cells

C. Antibodies

D. Organs

B. White blood cells

Memory Tick: N&M = Germ Killers

Neutrophils and macrophages are immune defenders.

A person receives a flu vaccine. Which immune system response is expected?

A. Immediate skin barrier formation

B. Production of memory B and T cells

C. Increased red blood cell production

D. Bone growth

B. Production of memory B and T cells

Memory Tick: Vaccine = Practice Test for Your Immune System

Just like taking TEAS practice questions helps you remember answers, vaccines help your immune system remember pathogens.

TEAS Quick-Memorization Chart

Topic —> Memory Trick

White Blood Cells —> White = Fight

Bone Marrow —> Blood Factory

Pathogen —> Path to Disease

Innate Immunity —> Immediate & Nonspecific

Adaptive Immunity —> Memory & Specific

B Cells. —> Build Antibodies

T Cells —> Target Infected Cells

Phagocytes —> Phago = Eat

Skin —> First Line of Defense

Vaccine —> Creates Immune Memory

TEAS Exam Must-Know Shortcut

When you see a question mentioning:

Skin, mucus, inflammation, phagocytes → Innate Immunity

B cells, T cells, antibodies, memory, vaccines → Adaptive Immunity

Memory Formula: 🦠 Pathogen → Immune Response → Memory → Protection ✅