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Cell Theory in Biology

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Questions and Answers

Which scientist is credited with coining the term 'cells' after examining the structure of cork?

Louis Pasteur

Robert Hooke (correct)

Theodor Schwann

Matthias Schleiden

What is the central idea behind the cell theory?

All living organisms are made up of one or more cells

Cells are the basic unit of structure and organization in living organisms

New cells are produced from pre-existing cells

All of the above (correct)

What is the significance of the cell theory in biology?

It is a unifying concept that is universally accepted

It explains the structure and function of living organisms

It provides a framework for understanding the diversity of life

All of the above (correct)

What is the common feature shared by all cells, regardless of their size and shape?

They are all surrounded by a membrane Signup and view all the answers

What is the significance of the exceptions to the cell theory?

They highlight the need for continuous scientific exploration and discovery Signup and view all the answers

What was the primary method used by the early scientists who contributed to the development of the cell theory?

Microscopic observation Signup and view all the answers

Which of the following organisms have structures that challenge the cell theory?

Striated muscle fibres, aseptate fungal hyphae, and giant alga Signup and view all the answers

What is the characteristic of striated muscle fibres that challenges the cell theory?

They are formed from multiple cells that have fused together and have multiple nuclei. Signup and view all the answers

What is the distinguishing feature of aseptate fungal hyphae that questions the cell theory?

They have multiple nuclei and continuous cytoplasm without any septa or end walls. Signup and view all the answers

Which feature of the giant alga Acetabularia challenges the cell theory?

It is a unicellular organism with a relatively complex structure and a single nucleus. Signup and view all the answers

Which of the following statements about striated muscle fibres is true?

They are longer than typical cells, with a length of up to 300 mm. Signup and view all the answers

Which of the following statements about the cell theory is correct, based on the information provided?

The cell theory has some limitations and does not apply to all organisms. Signup and view all the answers