Podcast
Questions and Answers
Who discovered the cells in a cork slice in 1665?
Who discovered the cells in a cork slice in 1665?
- Robert Brown
- Robert Hooke (correct)
- Leeuwenhoek
- Purkinje
Which biologist presented the cell theory that all plants and animals are composed of cells?
Which biologist presented the cell theory that all plants and animals are composed of cells?
- Leeuwenhoek
- Virchow
- Schwann
- Schleiden (correct)
Who discovered the free living cells in pond water for the first time?
Who discovered the free living cells in pond water for the first time?
- Robert Hooke
- Purkinje
- Leeuwenhoek (correct)
- Robert Brown
Who coined the term ‘protoplasm’ for the fluid substance of the cell?
Who coined the term ‘protoplasm’ for the fluid substance of the cell?
Who suggested that all cells arise from pre-existing cells, expanding the cell theory?
Who suggested that all cells arise from pre-existing cells, expanding the cell theory?
What is the function of the plasma membrane in a cell?
What is the function of the plasma membrane in a cell?
How do substances like carbon dioxide or oxygen move across the cell membrane?
How do substances like carbon dioxide or oxygen move across the cell membrane?
What happens when there is a difference of concentration of CO2 inside and outside a cell?
What happens when there is a difference of concentration of CO2 inside and outside a cell?
Which process allows O2 to enter the cell when its concentration inside the cell decreases?
Which process allows O2 to enter the cell when its concentration inside the cell decreases?
What term is used for the movement of substances from a region of high concentration to a region where its concentration is low?
What term is used for the movement of substances from a region of high concentration to a region where its concentration is low?
What is the function of the plasma membrane in a cell?
What is the function of the plasma membrane in a cell?
How do substances like carbon dioxide or oxygen move across the cell membrane?
How do substances like carbon dioxide or oxygen move across the cell membrane?
What term is used for the movement of substances from a region of high concentration to a region where its concentration is low?
What term is used for the movement of substances from a region of high concentration to a region where its concentration is low?
What happens when there is a difference of concentration of CO2 inside and outside a cell?
What happens when there is a difference of concentration of CO2 inside and outside a cell?
Who presented the cell theory that all plants and animals are composed of cells?
Who presented the cell theory that all plants and animals are composed of cells?
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