Cells

The first observation of cells by Robert Hooke was seen in which organic matter?

• fruit fly

• oak tree

• cork

• bacteria

The vacuole is labeled what number in the plant cell?

• 3

• 4

• 5

• 2

Twenty years after M.J. Schleiden and Theodor Schwann published separate conclusions on the cell theory, Rudolf Virchow proposed that —

• bacteria can form in sterile broth

• cells are the building blocks of life

• cells can be traced back to ancient time

• cells only forms from pre-existing cells

The endoplasmic reticulum is often covered with ribosomes. Which structure is the endoplasmic reticulum?

• 2

• 8

• 7

• 3

The tubular passageways that carry proteins through the cell

are called —

• nuclei

• endoplasmic reticulum

• mitochondria

• chloroplast

The jelly-like substance in the cell is called

• cytokinesis

• cytoplasm

• lysosome

• chromosome

Which scientists helped contribute to the development of the cell theory?

• Virchow, Watson, Crick

• Hooke, Darwin, Schwann

• Schleiden, Pasteur, Watson

• Schleiden, Schwann, Virchow

What is the name of Structure 5?

• cell wall

• nucleus

• cell membrane

• cytoplasm

Which part of the cell is considered to be "selectively permeable" because it allows certain molecules to enter or leave the cell?

• cytoplasm

• nucleolus

• cytoplasm

• cell membrane

Which statement was NOT included in the cell theory?

• Living cells only come from other living cells

• Cells are the smallest unit of life

• All living things are made of cell

• Each cells contains a cell membrane, cytoplasm, nucleus, mitochondrion, and endoplasmic reticulum.