Bio 185 review

The cell theory includes all of the following

• All the life processes of metabolism occur in cells

• All living things are composed of one or more cells

• All living cells are about the same size and contain organelles

• Cells arise only by division of previously existing cells

• The cell is the basic unit of organization of organisms'

The size of typical eukaryotic cells in measured in

• km

• mm

• μm

• nm

• pm

Long, fine, threadlike organelles of motility that protrude from the surface of cells, are

• actin filaments

• basal bodies

• flagella

• hairs

• microtubules

According to the cell theory

• cells arise spontaneously from nonliving substances

• all living things are composed of cells

• all cells have the same number and kind of organelles

• cells are identical in shape and size

• all cells are surrounded by a cell wall

Which is true of a eukaryotic cell

• is usually smaller than a prokaryotic cell

• has its DNA concentrated in one area of the cell without a nuclear membrane

• typically has a cell wall, in addition to a plasma membrane

• is exemplified by bacteria

• has a verity of membraneous organelles

Which of the following structure would not be found in prokaryotic cells

• cell wall

• ribosomes

• nuclear area

• nucleus

• propeller-like flagellum

Bacteria cell are prokaryotic; in comparison to a typical eukaryotic cell they would

• be smaller

• have a smaller nucleus

• lack a plasma membrane

• have fewer internal membranous compartments

• have a greater variety of organelles

The maximum size of a cell is limited by

• its need for enough surface area for exchange with its environment

• the number of organelles that can be packed inside

• the materials needed to build it

• the amount of flexibility it needs to be able to move

• the amount of food it needs to survive

Which of the following clues would tell you whether a cell is prokaryotic or eukaryotic

• the presence or absence of a rigid cell wall

• whether or not the cell is partitioned by internal membranes

• the presence or absence of ribosomes

• whether or not the cell carries out cellular metabolism

• whether or not the cell contains DNA

The cells of which organisms are NOT surrounded by a cell wall

• animals

• fungi

• plants

• bacteria

• algae