Cell Theory and Structure

who contributed on the third tenet of the cell theory?

• Anton van Leeuwenhoek

• Robert Hooke

• Rudolf Virchow

• Theodor Schwann

Who concluded that all living plants are made up of cells?

• Matthias Schleiden

• Robert Hooke

• Rudolf Virchow

• Theodor Schwann

Who are the two biologists who collaborated and proposed the first and second postulates of the cell theory?

• Rudolf Virchow and Theodor Schwann

• Rudolf Virchow and Matthias Schleiden

• Matthias Schleiden and Theodor Schwann

• Robert Hooke and Anton Van Leeuwenhoek

What is the first postulate of the cell modern theory?

• The cell is the basic unit of life.

• All cells come from pre-existing cells.

• All organisms are made up of one or more cells.

• All cells are essentially the same in chemical composition.

Why there is a very little cell advancement between Hooke-Leeuwenhoek discoveries up to mid-nineteenth century?

• Due to the limited advancement of microscopes.

• Scientists were not treated well during these periods.

• Due to the widely accepted spontaneous generation theory

• All of the above

Which of the following observations about cell was made by Robert Hooke?

• He concluded that all cells come from pre-existing cells.

• He discovered a dark-dense spot inside the cell and termed as a nucleus.

• He observed tiny living organisms in blood cells that he termed as “animalcules”

• He observed a tiny compartment or small rooms on a piece of cork and termed it as cell to describe its chamber-like structures.

The cell is the basic unit of all organisms’, this means that _____________.

• Organism is composed of cells.

• Cells can be macroscopic or microscopic

• The cell is the smallest part of an organism

• The cell is the fundamental unit of structure and function in all living things.

Tags

NGSS.MS-LS1-1

What cell structure controls and directs most activities of the cell?

• Cell membrane

• Cytoplasm

• Nucleolus

• Nucleus

What major component of the cell enclose the cell from its environment?

• Cell membrane

• Cytoplasm

• Nucleolus

• Nucleus

Tags

NGSS.MS-LS1-2

Which is a jellylike substance where other cell structures are suspended/floating?

• Cell membrane

• Cytoplasm

• Nucleolus

• Nucleus

Tags

NGSS.MS-LS1-2