Exam 1 ,2&3 COMBINED: NU 110 / NU110
(Latest ) Integrated Human
Sciences | Review Questions with Answers |
100 % Correct | Grade A - Galen
NU 110 EXAM 1 Review
Which component is essential for blood clotting?
A. Hemoglobin
B. Fibrinogen
C. Albumin
D. Platelets
Answer: B. Fibrinogen
Rationale: Fibrinogen is a plasma protein converted into fibrin during coagulation, forming
the structural mesh of a blood clot.
Which region lies inferior to the lumbar region?
A. Thoracic
B. Cervical
C. Gluteal
D. Scapular
Answer: C. Gluteal
Rationale: The gluteal region (buttocks) is anatomically located below the lumbar (lower
back) region.
What does the sagittal plane divide the body into?
A. Upper and lower halves
B. Front and back halves
C. Right and left halves
D. Diagonal sections
,Answer: C. Right and left halves
Rationale: The sagittal plane runs vertically and separates the body into right and left
portions.
Which statement about a solution with a pH of 7 is correct?
A. It is more acidic than blood
B. It is neutral
C. It is strongly basic
D. It is incompatible with life
Answer: B. It is neutral
Rationale: A pH of 7 is neutral; blood is slightly alkaline (~7.35–7.45), so pH 7 is actually
more acidic than blood but still neutral overall.
What characterizes a covalent bond?
A. Transfer of electrons
B. Sharing of electrons
C. Loss of protons
D. Attraction of ions
Answer: B. Sharing of electrons
Rationale: Covalent bonds form when atoms share electrons in their outer shells to achieve
stability.
Which example best represents naturally acquired active immunity?
A. Vaccination
B. Receiving antibodies
C. Developing measles and gaining immunity
D. Antibiotic treatment
Answer: C. Developing measles and gaining immunity
Rationale: Naturally acquired active immunity occurs when the body produces its own
antibodies after infection.
What is a key feature of lymph vessels?
A. They carry oxygen
B. They contain one-way valves
C. They pump blood
D. They lack structure
Answer: B. They contain one-way valves
,Rationale: Valves ensure lymph flows in one direction toward drainage sites, preventing
backflow.
Which is an example of a colloidal suspension?
A. Water
B. Blood
C. Air
D. Saline
Answer: B. Blood
Rationale: Blood contains suspended plasma proteins, making it a colloidal system.
Which structure is most associated with protein synthesis?
A. Lysosome
B. Ribosome
C. Nucleus
D. Golgi apparatus
Answer: B. Ribosome
Rationale: Ribosomes are the primary sites where proteins are synthesized from mRNA
instructions.
How does oxygen move from the lungs into the blood?
A. Active transport
B. Osmosis
C. Diffusion
D. Filtration
Answer: C. Diffusion
Rationale: Oxygen moves down its concentration gradient from alveoli into blood via
diffusion.
What is the process by which a cell releases substances via vesicles?
A. Endocytosis
B. Diffusion
C. Exocytosis
D. Filtration
Answer: C. Exocytosis
Rationale: Vesicles fuse with the cell membrane to expel contents outside the cell.
, Which transport mechanism relies on pressure differences?
A. Diffusion
B. Active transport
C. Filtration
D. Osmosis
Answer: C. Filtration
Rationale: Filtration moves substances across membranes due to hydrostatic pressure
differences.
What happens when H⁺ ions are removed from blood?
A. pH decreases
B. pH increases
C. Oxygen decreases
D. CO₂ increases
Answer: B. pH increases
Rationale: Removing hydrogen ions reduces acidity, raising pH.
What is a consequence of spleen removal?
A. Improved immunity
B. Increased infection risk
C. Better oxygen transport
D. Reduced inflammation
Answer: B. Increased infection risk
Rationale: The spleen plays a major role in immune defense and filtering blood.
Where are the lungs located?
A. Dorsal cavity
B. Ventral cavity
C. Abdominal cavity
D. Pelvic cavity
Answer: B. Ventral cavity
Rationale: The lungs lie in the thoracic portion of the ventral cavity.
What is lymph?
A. Blood plasma
B. Interstitial fluid absorbed into lymphatic vessels
C. Digestive enzyme
(Latest ) Integrated Human
Sciences | Review Questions with Answers |
100 % Correct | Grade A - Galen
NU 110 EXAM 1 Review
Which component is essential for blood clotting?
A. Hemoglobin
B. Fibrinogen
C. Albumin
D. Platelets
Answer: B. Fibrinogen
Rationale: Fibrinogen is a plasma protein converted into fibrin during coagulation, forming
the structural mesh of a blood clot.
Which region lies inferior to the lumbar region?
A. Thoracic
B. Cervical
C. Gluteal
D. Scapular
Answer: C. Gluteal
Rationale: The gluteal region (buttocks) is anatomically located below the lumbar (lower
back) region.
What does the sagittal plane divide the body into?
A. Upper and lower halves
B. Front and back halves
C. Right and left halves
D. Diagonal sections
,Answer: C. Right and left halves
Rationale: The sagittal plane runs vertically and separates the body into right and left
portions.
Which statement about a solution with a pH of 7 is correct?
A. It is more acidic than blood
B. It is neutral
C. It is strongly basic
D. It is incompatible with life
Answer: B. It is neutral
Rationale: A pH of 7 is neutral; blood is slightly alkaline (~7.35–7.45), so pH 7 is actually
more acidic than blood but still neutral overall.
What characterizes a covalent bond?
A. Transfer of electrons
B. Sharing of electrons
C. Loss of protons
D. Attraction of ions
Answer: B. Sharing of electrons
Rationale: Covalent bonds form when atoms share electrons in their outer shells to achieve
stability.
Which example best represents naturally acquired active immunity?
A. Vaccination
B. Receiving antibodies
C. Developing measles and gaining immunity
D. Antibiotic treatment
Answer: C. Developing measles and gaining immunity
Rationale: Naturally acquired active immunity occurs when the body produces its own
antibodies after infection.
What is a key feature of lymph vessels?
A. They carry oxygen
B. They contain one-way valves
C. They pump blood
D. They lack structure
Answer: B. They contain one-way valves
,Rationale: Valves ensure lymph flows in one direction toward drainage sites, preventing
backflow.
Which is an example of a colloidal suspension?
A. Water
B. Blood
C. Air
D. Saline
Answer: B. Blood
Rationale: Blood contains suspended plasma proteins, making it a colloidal system.
Which structure is most associated with protein synthesis?
A. Lysosome
B. Ribosome
C. Nucleus
D. Golgi apparatus
Answer: B. Ribosome
Rationale: Ribosomes are the primary sites where proteins are synthesized from mRNA
instructions.
How does oxygen move from the lungs into the blood?
A. Active transport
B. Osmosis
C. Diffusion
D. Filtration
Answer: C. Diffusion
Rationale: Oxygen moves down its concentration gradient from alveoli into blood via
diffusion.
What is the process by which a cell releases substances via vesicles?
A. Endocytosis
B. Diffusion
C. Exocytosis
D. Filtration
Answer: C. Exocytosis
Rationale: Vesicles fuse with the cell membrane to expel contents outside the cell.
, Which transport mechanism relies on pressure differences?
A. Diffusion
B. Active transport
C. Filtration
D. Osmosis
Answer: C. Filtration
Rationale: Filtration moves substances across membranes due to hydrostatic pressure
differences.
What happens when H⁺ ions are removed from blood?
A. pH decreases
B. pH increases
C. Oxygen decreases
D. CO₂ increases
Answer: B. pH increases
Rationale: Removing hydrogen ions reduces acidity, raising pH.
What is a consequence of spleen removal?
A. Improved immunity
B. Increased infection risk
C. Better oxygen transport
D. Reduced inflammation
Answer: B. Increased infection risk
Rationale: The spleen plays a major role in immune defense and filtering blood.
Where are the lungs located?
A. Dorsal cavity
B. Ventral cavity
C. Abdominal cavity
D. Pelvic cavity
Answer: B. Ventral cavity
Rationale: The lungs lie in the thoracic portion of the ventral cavity.
What is lymph?
A. Blood plasma
B. Interstitial fluid absorbed into lymphatic vessels
C. Digestive enzyme
