ATI MED SURG PROCTORED NGN
RETAKE 2024-2025 / ATI MED SURG
PROCTORED NGN RETAKE 2024-2025
1. Which planet is known as the "Red Planet"?
A) Venus
B) Jupiter
C) Mars
D) Saturn
Correct Answer: C
Rationale: Mars is called the Red Planet because of the iron oxide (rust) on its
surface, giving it a reddish appearance. Venus is the hottest, Jupiter is the
largest, and Saturn is known for its rings.
2. What is the chemical symbol for water?
A) H2O
B) CO2
C) NaCl
D) HCl
Correct Answer: A
Rationale: Water is composed of two hydrogen atoms and one oxygen atom,
hence H2O. CO2 is carbon dioxide, NaCl is table salt, and HCl is hydrochloric
acid.
3. Which gas do plants absorb from the atmosphere?
A) Oxygen
B) Nitrogen
,C) Carbon Dioxide
D) Hydrogen
Correct Answer: C
Rationale: Plants absorb carbon dioxide (CO2) during photosynthesis to produce
glucose and oxygen. They release oxygen as a byproduct.
4. What is the hardest natural substance on Earth?
A) Gold
B) Iron
C) Diamond
D) Quartz
Correct Answer: C
Rationale: Diamond is the hardest known natural material, scoring 10 on the
Mohs scale. Gold and iron are metals, and quartz is a mineral with a hardness of
7.
5. Which part of the human body is responsible for pumping blood?
A) Liver
B) Lungs
C) Heart
D) Brain
Correct Answer: C
Rationale: The heart is a muscular organ that pumps blood throughout the body
via the circulatory system. The liver filters toxins, lungs exchange gases, and the
brain controls functions.
6. What is the chemical formula for table salt?
A) KCl
B) NaHCO3
C) NaCl
D) CaCO3
, Correct Answer: C
Rationale: Table salt is sodium chloride (NaCl). KCl is potassium chloride,
NaHCO3 is baking soda, and CaCO3 is calcium carbonate.
7. How many bones does the adult human skeleton have?
A) 106
B) 206
C) 306
D) 406
Correct Answer: B
Rationale: The adult human skeleton has 206 bones. Babies have about 270
bones, which fuse as they grow.
8. Which organelle is known as the "powerhouse of the cell"?
A) Nucleus
B) Ribosome
C) Mitochondria
D) Golgi body
Correct Answer: C
Rationale: Mitochondria produce ATP through cellular respiration, providing
energy for the cell. The nucleus holds DNA, ribosomes make proteins, and the
Golgi body packages proteins.
9. What is the only liquid metal at room temperature?
A) Iron
B) Mercury
C) Silver
D) Lead
Correct Answer: B
Rationale: Mercury is the only metal that is liquid at room temperature. Iron,
silver, and lead are all solid at room temperature.
RETAKE 2024-2025 / ATI MED SURG
PROCTORED NGN RETAKE 2024-2025
1. Which planet is known as the "Red Planet"?
A) Venus
B) Jupiter
C) Mars
D) Saturn
Correct Answer: C
Rationale: Mars is called the Red Planet because of the iron oxide (rust) on its
surface, giving it a reddish appearance. Venus is the hottest, Jupiter is the
largest, and Saturn is known for its rings.
2. What is the chemical symbol for water?
A) H2O
B) CO2
C) NaCl
D) HCl
Correct Answer: A
Rationale: Water is composed of two hydrogen atoms and one oxygen atom,
hence H2O. CO2 is carbon dioxide, NaCl is table salt, and HCl is hydrochloric
acid.
3. Which gas do plants absorb from the atmosphere?
A) Oxygen
B) Nitrogen
,C) Carbon Dioxide
D) Hydrogen
Correct Answer: C
Rationale: Plants absorb carbon dioxide (CO2) during photosynthesis to produce
glucose and oxygen. They release oxygen as a byproduct.
4. What is the hardest natural substance on Earth?
A) Gold
B) Iron
C) Diamond
D) Quartz
Correct Answer: C
Rationale: Diamond is the hardest known natural material, scoring 10 on the
Mohs scale. Gold and iron are metals, and quartz is a mineral with a hardness of
7.
5. Which part of the human body is responsible for pumping blood?
A) Liver
B) Lungs
C) Heart
D) Brain
Correct Answer: C
Rationale: The heart is a muscular organ that pumps blood throughout the body
via the circulatory system. The liver filters toxins, lungs exchange gases, and the
brain controls functions.
6. What is the chemical formula for table salt?
A) KCl
B) NaHCO3
C) NaCl
D) CaCO3
, Correct Answer: C
Rationale: Table salt is sodium chloride (NaCl). KCl is potassium chloride,
NaHCO3 is baking soda, and CaCO3 is calcium carbonate.
7. How many bones does the adult human skeleton have?
A) 106
B) 206
C) 306
D) 406
Correct Answer: B
Rationale: The adult human skeleton has 206 bones. Babies have about 270
bones, which fuse as they grow.
8. Which organelle is known as the "powerhouse of the cell"?
A) Nucleus
B) Ribosome
C) Mitochondria
D) Golgi body
Correct Answer: C
Rationale: Mitochondria produce ATP through cellular respiration, providing
energy for the cell. The nucleus holds DNA, ribosomes make proteins, and the
Golgi body packages proteins.
9. What is the only liquid metal at room temperature?
A) Iron
B) Mercury
C) Silver
D) Lead
Correct Answer: B
Rationale: Mercury is the only metal that is liquid at room temperature. Iron,
silver, and lead are all solid at room temperature.
