AIIMS Raipur NO - 2019 (Shift-2)
Applied Anatomy
Easy
These are the basic units or building blocks of living organisms?
Appeared in: AIIMS Raipur NO - 2019 (Shift-2)
Explanation
- Cells are the basic structural and functional units of all tissues, organs, and systems in the human body.
- According to the cell theory, all living organisms are composed of cells, and all cells arise from pre-existing cells.
- Each cell can carry out the essential processes of life, such as metabolism, growth, and reproduction, making it the smallest unit of life.
- Groups of specialized cells form tissues, which in turn form organs and organ systems, demonstrating a clear hierarchical organization.
Why Other Options Were Wrong
- Option A: An enzyme is a complex protein molecule that functions as a biological catalyst to speed up chemical reactions. It is a component within a cell, not the basic building block of the entire organism.
- Option B: A proton is a positively charged subatomic particle found in the nucleus of an atom. It is a fundamental component of matter, not a living entity or the basic unit of an organism.
- Option D: A neutron is a neutral (uncharged) subatomic particle also found in the nucleus of an atom. Like a proton, it is a building block of matter, not of life.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain The fundamental structural and functional unit of living organisms as background academic context rather than a clinical decision trigger.
- Understanding the cell as the basic unit of life is fundamental to pathology. Diseases like cancer are characterized by uncontrolled cell division and growth.
- Many diagnostic tests in nursing, such as cytology (e.g., Pap smear), involve examining cells to detect abnormalities, infections, or cancer.
- Pharmacology is based on how drugs interact with cells to produce a therapeutic effect. A nurse must understand cellular physiology to appreciate drug actions and side effects.
How to Approach the Question
- First, read the question carefully to identify the core concept being asked. The question asks for the 'basic units or building blocks of living organisms'.
- Analyze each option based on your knowledge of basic biology.
- Evaluate 'Enzyme': Recall that enzymes are proteins that facilitate reactions, not the primary structural unit.
- Evaluate 'Proton' and 'Neutron': Recognize these as subatomic particles, the building blocks of atoms, not living organisms.
- Evaluate 'Cells': Recall the definition from cell theory, which states that all living things are made of cells. This directly matches the question.
- Conclude that 'Cells' is the only option that fits the definition of the basic structural and functional unit of life.
Concept Tested & Keywords
- Concept Tested: The fundamental structural and functional unit of living organisms.
- Stem keywords: basic units, building blocks, living organisms
- Lead-in keywords: BEST, MOST RELEVANT CLUE
Question ID
QEafO333hkAMtzi6lNQPx_
Reference Book
E6 Pathology-Textbook of PATHOLOGYHarsh Mohan Part 1 (1-214) p. 32-34
E6 Physiology Essentials Sembulingam 10e Part 1 p. 23-26
Practise the full AIIMS Raipur NO - 2019 (Shift-2)
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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