The Cell

Which of the following is NOT a component of The Cell Theory?

• All non-living things are made of cells.

• All cells come from pre-existing cells.

• Cells are the basic unit of structure and function of all living things.

According to cell theory, where do cells come from?

• Other living cells

• A multicellular organism

• Energy from the sun

• The nonliving environment

What scientist was the first to observe LIVING cells under the microscope?

• Hooke

• Virchow

• Leeuwenhoek

• Schwann

What was Schleiden's contribution to the cell theory?

• All plants are made of cells

• All animals are made of cells

• All cells form spontaneously

• None of the above

Tags

NGSS.MS-LS1-1

An organism made of one call is called

• multicellular.

• unicellular.

Tags

NGSS.MS-LS1-1

An organism that is made of many cells is called

• multicellular

• unicellular

Tags

NGSS.MS-LS1-1

Organelles and chromosomes are copied during...

• cytokinesis.

• the first stage of the eukaryotic cell cycle.

• the third stage of the eukaryotic cell cycle.

• the second stage of the eukaryotic cell cycle.

Tags

NGSS.HS-LS1-4

Pairs of similar chromosomes are called...

• chromosomes

• homologous chromosomes

• cytokinesis

• DNA

Cells need to produce new cells in order to...

• replace cells that have died.

• create new chromosomes.

• obtain energy from sunlight.

• release energy from food.

Tags

NGSS.HS-LS1-4

During cytokinesis in plant cells...

• the cell wall breaks.

• a cell plate forms, and the cell splits in two.

• a cell plate forms inside the two new cells.

• the cell loses some of its DNA.

Tags

NGSS.HS-LS1-4