Cell structure & organization

Which of the following does the cell theory propose?

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

• All the life functions of an organism occur within cells.

• All cells come from preexisting cells.

• All of the above.

Scientists who contributed to the development of the cell theory included _____.

• Gregor Mendel

• Rudolf Virchow

• Zacharias Janssen

• Charles Darwin

A(n) _____ is a structure composed of two or more types of tissues that work to do a specific task.

• cell

• organelle

• organ

Prokaryotes include organism in what domains?

• Archaea and Bacteria

• Archaea and Eukarya

• Bacteria and Eukarya

Eukaryotic cells contain _____.

• Ribosomes

• Nucleus

• Ribosomes and Nucleus

• No answer

Which of the following is an example of eukaryotic cells? SELECT ALL THAT APPLY.

• Bacteria

• Archaea

• Plants

• Animals

How much of a typical plant cell's volume does the central vacuole occupy?

• 20%

• 10%

• 5%

• more than 30%

What plastids contain chlorophyll and used for photosynthesis?

• Chromoplast

• Leucoplast

• Chloroplast

Organelles found only in plant cells include _____.

• smooth ER

• ribosomes

• lysosomes

• cell walls

What did Robert Hooke discover in cork pieces when using a microscope?

• animalcules

• cells

• plaque from teeth

• bacteria