Nokea
Which biomolecule is responsible for the storage and transfer of genetic information?
- A. Carbohydrates
- B. Proteins
- C. Lipids
- D. Nucleic acids
Correct Answer: D
Rationale: Nucleic acids, such as DNA and RNA, are the biomolecules responsible for storing and transferring genetic information within cells. Carbohydrates, proteins, and lipids do not have this specific function. Carbohydrates are mainly used for energy storage, structural support, and cellular communication. Proteins are involved in various cellular functions such as enzymatic reactions, structural support, and signaling. Lipids play roles in energy storage, cell membrane structure, and signaling.
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What does oliguria lead to in patients with acute kidney injury?
- A. Hypophosphatemia and overgrowth of bone tissue
- B. An increase in blood potassium levels due to excessive excretion of parathyroid hormone
- C. Sodium retention and elevated levels of potassium
- D. Edema due to increased urine production
Correct Answer: C
Rationale: In patients with acute kidney injury, oliguria (reduced urine output) often results in sodium retention and hyperkalemia (elevated levels of potassium). This is due to the kidneys' decreased capacity to excrete these substances. Choice A is incorrect because hypophosphatemia and overgrowth of bone tissue are not direct consequences of oliguria in acute kidney injury. Choice B is incorrect because an increase in blood potassium levels is not caused by excessive excretion of parathyroid hormone but rather by decreased excretion of potassium. Choice D is incorrect because edema is not caused by increased urine production but rather by fluid overload due to decreased urine output.
What can be a potential consequence of consuming insufficient fat?
- A. constipation
- B. marasmus
- C. infertility
- D. diverticulitis
Correct Answer: C
Rationale: The correct answer is C. Fat is crucial for the production of hormones, including reproductive hormones. Consuming too little fat can lead to hormonal imbalances, affecting fertility. Choices A, B, and D are incorrect. Constipation is more commonly associated with insufficient fiber intake, marasmus is severe malnutrition due to overall calorie deficiency, and diverticulitis is often related to low fiber intake and not specifically low fat consumption.
Onset frequently occurs after the age of 40.
- A. Type 1 Diabetes
- B. Type 2 Diabetes
Correct Answer: B
Rationale: The correct answer is B, Type 2 Diabetes. Type 2 Diabetes commonly presents with an onset after the age of 40, although it is now also seen in younger individuals due to lifestyle factors such as poor diet and lack of exercise. Type 1 Diabetes, on the other hand, typically develops in childhood or adolescence and is not associated with age over 40. Choices C and D are left blank as they are not relevant to the question.
What is the glomerular filtration rate for patients with stage 5 chronic kidney disease (CKD)?
- A. Less than 15 mL/min/1.73 m²
- B. Less than 30 mL/min/1.73 m²
- C. Less than 90 mL/min/1.73 m²
- D. Less than 125 mL/min/1.73 m²
Correct Answer: A
Rationale: In patients with stage 5 chronic kidney disease (CKD), also known as end-stage renal disease, the kidney function is significantly compromised. This severe condition is characterized by a glomerular filtration rate (GFR) of less than 15 mL/min/1.73 m², as correctly stated in choice A. Choices B, C, and D suggest higher GFR values, which are not indicative of stage 5 CKD. Specifically, a GFR of less than 30 mL/min/1.73 m² indicates stage 4 CKD, less than 90 mL/min/1.73 m² signifies stage 3 CKD, and a typical healthy individual usually has a GFR of around 125 mL/min/1.73 m², which is far above the GFR for stage 5 CKD.
Which lipid contains 3 fatty acids?
- A. cholesterol
- B. phospholipid
- C. saturated
- D. triglyceride
Correct Answer: D
Rationale: The correct answer is 'D. triglyceride.' Triglycerides are composed of one glycerol molecule and three fatty acids, making them the primary form of stored fat in the body. Cholesterol (A) is a different type of lipid, phospholipids (B) have two fatty acids, and 'saturated' (C) refers to the structure of fatty acids, not a specific lipid containing 3 fatty acids.