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Question #45396
The Question
During the initial days of lactation, the mammary glands secrete colostrum, which gradually transitions into mature milk. Analyzing this nutrient partitioning in the context of neonatal development and energy assimilation, which of the following statements is INCORRECT?
Options
- A.
Colostrum is characterized by high protein and low lipid density, prioritizing early immune-priming over rapid caloric assimilation.
- B.
The shift to mature milk involves increased lipid partitioning, providing concentrated energy to maximize the infant's secondary productivity (biomass accumulation).
- C.
The abundant IgA antibodies in colostrum are absorbed across the neonatal gut, providing naturally acquired active immunity against early environmental pathogens.
- D.
The higher fat and lactose content in mature milk serves as the primary respiratory substrate to meet the growing infant's increasing ATP demands.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Mature_Milk|Lactose|Lipids|Energy_Pyramid
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The strict distinction between Active and Passive Immunity.
Common Misconception: Students often fail to integrate concepts across chapters.
While they may know colostrum contains IgA (Human Reproduction), they must link it to the exact type of immunity (Human Health and Disease) and recognize that receiving pre-formed antibodies is strictly 'passive'.
The inclusion of ecological terms ('secondary productivity') acts as a high-level distractor to test confidence in core physiological facts.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Human Reproduction - Class 12 |
| Concept | Colostrum vs. Mature Milk |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |