Question

Which of the following respiratory structures is affected by a disease that disrupts gas exchange, such as emphysema?

Answer 1

Correct Answers:

Alveoli

Rationale :

🔹 Alveoli are the tiny air sacs in the lungs where gas exchange occurs between oxygen and carbon dioxide.

🔹 In diseases like emphysema, the alveolar walls are damaged or destroyed, reducing the surface area for gas exchange.

🔹 This leads to impaired oxygen intake and carbon dioxide removal, resulting in shortness of breath and hypoxia.

🔹 Unlike the trachea or bronchi, which are involved in air conduction, the alveoli are directly responsible for oxygenating the blood.

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Answer 2

Correct Answers:

Cecum

Rationale :

🔸 The vermiform appendix is a narrow, tube-like structure that extends from the cecum, which is the first part of the large intestine.

🔸 The cecum connects the small intestine (ileum) to the colon and is located in the lower right abdominal quadrant.

🔸 Though once thought to be vestigial, the appendix may play a role in gut immunity and maintaining healthy gut flora.

🔸 It is not connected to the jejunum, rectum, or achi (note: "Achi" is not an anatomical term).

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Answer 3

Correct Answers:

Renal Vein

Rationale :

🔹 The renal vein is responsible for draining oxygen-depleted blood from the kidneys and returning it to the inferior vena cava, which leads back to the heart.

🔹 After the kidneys filter the blood and regulate fluid and electrolyte balance, the cleaned, deoxygenated blood is carried away by the renal veins.

🔹 This is distinct from the renal artery, which brings oxygen-rich blood to the kidneys for filtration.

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Answer 4

Correct Answers:

The presence or absence of ducts

Rationale :

♦️ The primary distinction between endocrine and exocrine glands lies in whether or not they use ducts to transport their secretions.

♦️ Endocrine glands are ductless and release hormones directly into the bloodstream, targeting distant organs.

♦️ Exocrine glands, on the other hand, release substances like sweat, enzymes, or mucus through ducts to a specific surface or cavity.

♦️ This structural feature defines their classification, not the type of secretion or its effects.

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Answer 5

Correct Answers:

Kidneys

Rationale :

🔶 The kidneys are the primary organs responsible for removing nitrogenous wastes, such as urea, uric acid, and ammonia, from the blood.

🔶 These wastes are byproducts of protein metabolism and are excreted in urine through filtration by the nephrons.

🔶 This function is essential for maintaining homeostasis, including electrolyte balance, fluid balance, and acid–base regulation.

🔶 Other organs assist in detoxification, but only the kidneys filter nitrogenous wastes directly from the bloodstream.

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Answer 6

Correct Answers:

Urea

Rationale :

👉 Urea is a nitrogenous waste product formed in the liver during the breakdown of proteins, specifically from the conversion of toxic ammonia.

👉 While most urea is excreted by the kidneys in urine, a small amount is also excreted through sweat glands.

👉 This contributes to the elimination of waste and plays a minor role in regulating body temperature and pH through sweating.

👉 Sebum, water, and lysozymes are also secreted by the skin, but they serve different functions unrelated to nitrogen waste.

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Answer 7

Correct Answers:

C. Gg x gg

Rationale :

🔶 Green pod color (G) is dominant, while yellow pod color (g) is recessive.

🔶 A 1:1 phenotypic ratio (50% green, 50% yellow) in the offspring suggests one parent was heterozygous (Gg) and the other homozygous recessive (gg).

🔶 The Punnett square for Gg × gg gives:

• 50% Gg (green pods)

• 50% gg (yellow pods)

🔶 This is the only combination that can produce both phenotypes in equal proportions.

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Answer 8

Correct Answers:

Cell membrane

Rationale :

🔸 The cell membrane is a fundamental structure found in both prokaryotic and eukaryotic cells.

🔸 It is composed of a phospholipid bilayer with embedded proteins and serves as a selective barrier, regulating the movement of substances into and out of the cell.

🔸 Structures like the Golgi apparatus, endoplasmic reticulum, and chloroplasts are membrane-bound organelles found only in eukaryotic cells.

🔸 The presence of a cell membrane is essential for maintaining cellular integrity and homeostasis in all living cells.

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Answer 9

Correct Answers:

Using a mortar and pestle to grind a solid reactant to a powder

Rationale :

🔶 Grinding a solid reactant into a fine powder increases its surface area, which enhances its contact with other reactants.

🔶 This increased surface area allows for more frequent and effective collisions between reactant particles, thereby speeding up the chemical reaction.

🔶Adding product or reducing reactant concentration typically slows the reaction, and sealing the container may affect gas exchange but doesn’t directly increase the reaction rate.

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Answer 10

Correct Answers:

Potassium, atomic number 19

Rationale :

⪢ Potassium (K) has one electron in its outermost shell, making it highly likely to lose that electron to achieve a stable, noble gas configuration.

⪢ Losing an electron results in a positive charge, forming a cation (K⁺).

⪢ Oxygen, fluorine, and helium tend to gain electrons (forming anions) or are already stable (as in helium), making potassium the most cation-forming among the options.

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QLexNursing

1 :
Which of the following respiratory structures is affected by a disease that disrupts gas exchange, such as emphysema?

2 :
The vermiform appendix extends from the region of the large intestine known as which of the following?

3 :
Which of the following structures drains oxygen-depleted blood from the kidneys?

4 :
Which of the following distinguishes endocrine and exocrine glands from one another?

5 :
Which of the following organs removes nitrogenous waste from the body?

6 :
Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?

7 :
In pea plants, green pod color (6) is dominant to yellow pod color ( A cross was done between a plant with green pods and a plant with yellow pods. Of the resulting offspring 50% had green pods and 50% had yellow pods. Which of the following were the genotypes of both parent plants?

8 :
Which of the following structures is present in both prokaryotic and eukaryotic cells

9 :
Which of the following would result in an increase in the chemical reaction?

10 :
Which of the following atoms is most likely to become a cation?

QLexNursing

1 : Which of the following respiratory structures is affected by a disease that disrupts gas exchange, such as emphysema?

2 : The vermiform appendix extends from the region of the large intestine known as which of the following?

3 : Which of the following structures drains oxygen-depleted blood from the kidneys?

4 : Which of the following distinguishes endocrine and exocrine glands from one another?

5 : Which of the following organs removes nitrogenous waste from the body?

6 : Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?

7 : In pea plants, green pod color (6) is dominant to yellow pod color ( A cross was done between a plant with green pods and a plant with yellow pods. Of the resulting offspring 50% had green pods and 50% had yellow pods. Which of the following were the genotypes of both parent plants?

8 : Which of the following structures is present in both prokaryotic and eukaryotic cells

9 : Which of the following would result in an increase in the chemical reaction?

10 : Which of the following atoms is most likely to become a cation?

1 :
Which of the following respiratory structures is affected by a disease that disrupts gas exchange, such as emphysema?

2 :
The vermiform appendix extends from the region of the large intestine known as which of the following?

3 :
Which of the following structures drains oxygen-depleted blood from the kidneys?

4 :
Which of the following distinguishes endocrine and exocrine glands from one another?

5 :
Which of the following organs removes nitrogenous waste from the body?

6 :
Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?

7 :
In pea plants, green pod color (6) is dominant to yellow pod color ( A cross was done between a plant with green pods and a plant with yellow pods. Of the resulting offspring 50% had green pods and 50% had yellow pods. Which of the following were the genotypes of both parent plants?

8 :
Which of the following structures is present in both prokaryotic and eukaryotic cells

9 :
Which of the following would result in an increase in the chemical reaction?

10 :
Which of the following atoms is most likely to become a cation?