Cell Biology: Dr. Dipa Sarkar

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What is one of the key statements made by the cell theory?

Cells always function as autonomous units

The cell is the smallest unit of life (correct)

Living structures are composed of discrete cells

Fungi may have filamentous structures called hyphae

Which of the following challenges the idea that cells always function as autonomous units?

Some fungi have filamentous structures

All living things are composed of cells

Unicellular algae may grow to large sizes

Muscle cells fuse to form fibres with multiple nuclei (correct)

What characteristic of fungal hyphae challenges the idea of living structures being composed of discrete cells?

Fungi having filamentous structures

Cells arising only from pre-existing cells

Unicellular algae growing to large sizes

Fungi being aseptate with continuous cytoplasm (correct)

Which type of algae may grow to very large sizes and present an exception to typical cell sizes?

Unicellular algae Signup and view all the answers

In cell biology, what process involves nuclear division to produce two daughter cells?

Mitosis Signup and view all the answers

Which statement best summarizes a fundamental concept of cell theory?

Cells arise only from pre-existing cells Signup and view all the answers

What is the main difference between prokaryotic and eukaryotic cells?

Presence of membrane-bound organelles Signup and view all the answers

Which evolutionary process is believed to have led to the development of eukaryotic cells?

Endosymbiosis Signup and view all the answers

What is a distinctive feature of eukaryotic cells compared to prokaryotic cells?

Larger ribosomes Signup and view all the answers

Which statement best describes the main function of organelles in a cell?

Performing specific roles within the cell Signup and view all the answers

What is meant by compartmentalization in eukaryotic cells?

Separation of different cellular functions into specialized areas Signup and view all the answers

Which mnemonic can help remember differences between prokaryotic and eukaryotic cells?

DORA Signup and view all the answers

What cellular component in prokaryotic cells is responsible for polypeptide synthesis?

Ribosomes Signup and view all the answers

Which structure in prokaryotic cells is used for protection against desiccation and phagocytosis?

Cell wall Signup and view all the answers

How do prokaryotes typically divide?

Binary fission Signup and view all the answers

What is the main function of attachment pili in prokaryotic cells?

Adherence to surfaces Signup and view all the answers

What is the function of the cytoplasm in prokaryotic cells?

Internal fluid component of the cell Signup and view all the answers

Which cellular component maintains the shape of prokaryotic cells and prevents bursting?