Which of the following is supported by the cell theory?

Question

Which of the following is supported by the cell theory??  
A. Cells are alive and recognized as the building blocks for life.  
B. Scientists can identify and differentiate cells by using a microscope.  
C. Cells are produced from existing cells using meiosis instead of mitosis.  
D. Living things are composed of a single cell that remains undifferentiated.

Accepted Answer

Correct Answer: (A)Cells are alive and recognized as the building blocks for life.. 
Rationale: Cells are alive and recognized as the building blocks for life.The modern Cell Theory is a unifying principle composed of three core tenets: all living organisms are composed of one or more cells; the cell is the basic structural and functional unit of life; and all cells arise from pre-existing cells. The statement that cells are alive and are the building blocks for life directly and accurately summarizes the first two tenets, establishing cells as the smallest living entities from which all larger life forms are constructed.A) Cells are alive and recognized as the building blocks for life.This captures the essence that cells are the fundamental living units from which all organisms are built. It aligns perfectly with the first two tenets of the Cell Theory.B) Scientists can identify and differentiate cells by using a microscope.The invention of the microscope was a historical prerequisite for the development of the Cell Theory, allowing cells to be observed. However, this statement describes a methodological tool and its application, not a postulate of the theory itself. The theory is about the nature of life, not the techniques used to study it.C) Cells are produced from existing cells using meiosis instead of mitosis.The third tenet states that all cells arise from pre-existing cells, but it does not specify the mechanism of division. Cells can divide via mitosis, meiosis, or binary fission. Adding the specification "using meiosis instead of mitosis" imposes an unwarranted limitation not present in the theory and is factually incorrect for many cell types (e.g., somatic cells divide by mitosis).D) Living things are composed of a single cell that remains undifferentiated.This statement contradicts the Cell Theory. The theory encompasses both unicellular and multicellular organisms. In multicellular organisms, cells become specialized for different functions through differentiation. The theory does not state that organisms are only single-celled, nor does it claim that cells are undifferentiated.Conclusion:The Cell Theory describes the fundamental relationship between cells and life. The use of microscopes is a tool, not a tenet. The theory does not specify a division mechanism and fully accommodates both differentiated cells in multicellular organisms and unicellular life. The statement that cells are the living building blocks of life is a direct reflection of the theory's core principles.

Which of the following is supported by the cell theory?

A
Cells are alive and recognized as the building blocks for life.

B
Scientists can identify and differentiate cells by using a microscope.

C
Cells are produced from existing cells using meiosis instead of mitosis.

D
Living things are composed of a single cell that remains undifferentiated.

Cells are alive and recognized as the building blocks for life.

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Which of the following is supported by the cell theory?

A Cells are alive and recognized as the building blocks for life. B Scientists can identify and differentiate cells by using a microscope. C Cells are produced from existing cells using meiosis instead of mitosis. D Living things are composed of a single cell that remains undifferentiated.

Cells are alive and recognized as the building blocks for life.

Topic Flashcards

Mini Quiz

Related Questions

A
Cells are alive and recognized as the building blocks for life.

B
Scientists can identify and differentiate cells by using a microscope.

C
Cells are produced from existing cells using meiosis instead of mitosis.

D
Living things are composed of a single cell that remains undifferentiated.