BIO 4 - MICROBIOLOGY

Lacks nucleus and membrane-bound organelles

• Prokaryotes

• Eukaryotes

• Protists

• Plants

A group of bacteria called _______ have individuals with size much smaller dimensions. They measure about 0.25 µ and are the smallest cells known so far.

• Archaebacteria

• Mycoplasmas

• Eubacteria

• Staphylococcus

What is the shape of this bacteria?

• Cocci

• Bacilli

• Spirilla

• Pleomorphic

The cocci are arranged in grape-like clusters formed by irregular cell divisions in three plains.

• Diplococci

• Streptococci

• Tetrads

• Staphylococci

They are comma-shaped bacteria with less than one complete turn or twist in the cell.

• Vibrio

• Spirilla

• Spirochetes

• Spirilla

Some bacteria have a _______, which is a protective layer outside the cell wall.

• Endosperm

• Cell Wall

• Capsule

• Cuticle

An irregularly shaped region within the cytoplasm where the bacterial chromosome (DNA) is located.

• Nucleus

• Nucleoid

• Nuclear membrane

• Nucleolus

• _______ are shorter filaments of the protein pilin that emerge from the cytoplasmic membrane

• Responsible for bacterial adhesion and the transfer of nonchromosomal genetic material, such as plasmids

• Flagella

• Pili

• Cilia

• Cellulose

________ known as primary cilia receive signals from nearby cells and act as antennae for the cells.

• Non-motile cilia

• Motile cilia

• Pili

• Flagella

The fuzzy gel-like, sticky layer made up mainly of proteins and sugars. It surrounds the outermost cellular membrane of cells.

• Cuticle

• Cell Wall

• Cell Membrane

• Glycocalyx