Which of the following is associated with moles, freckles, and vitiligo?
Bilirubin
Carotene
Keratin
Melanin
The Correct Answer is D
A. Bilirubin: Bilirubin is a yellow pigment derived from the breakdown of red blood cells, associated with jaundice rather than freckles or moles.
B. Carotene: Carotene is an orange pigment found in foods like carrots and can contribute to skin tone but is not the main factor in moles or vitiligo.
C. Keratin: Keratin is a structural protein found in skin, hair, and nails but does not influence pigmentation.
D. Melanin: Melanin is the pigment responsible for skin color, moles, freckles, and conditions like vitiligo, which causes depigmentation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Non-essential amino acids: Non-essential amino acids are those that the body can synthesize, so they do not need to be obtained from the diet.
B. Fatty acids: Fatty acids are components of lipids, not amino acids, and are unrelated to protein synthesis.
C. Essential amino acids: Essential amino acids cannot be synthesized by the body and must be obtained through diet.
D. Protein: Proteins are made up of amino acids, but the term "non-essential amino acids" specifically refers to individual amino acids that the body can produce.
Correct Answer is D
Explanation
A. It is due to too much glucose in the cells: Diabetes is characterized by high blood glucose levels due to impaired insulin action, not excessive glucose within the cells.
B. Very few people have the disease: Diabetes is a common chronic disease, affecting millions worldwide.
C. Lifestyle choices (diet and exercise) have no effect on it: Lifestyle choices significantly impact diabetes management, particularly for Type 2 DM, where diet and exercise help control blood sugar levels.
D. It is related to abnormal insulin production and/or impaired insulin utilization: Diabetes Mellitus occurs due to either inadequate insulin production (Type 1 DM) or insulin resistance (Type 2 DM), leading to hyperglycemia.
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