The Prokaryotic Cell Pre-Class Assignment

Of the following features, which are common to bacteria and archaea? -Peptidoglycan -A plasma membrane -Ribosomes

-A plasma membrane -Ribosomes

Which of the following are structurally simmilar to prokaryotes, but are in fact more closely related to eukaryotes (base on their molecular biology)? -Archaea -Yeast -Fungi -Bacteria

-Archaea

Identify the two categories that prokaryotes can be divided into form an evolutionary perspective. Check all that apply.

-Bacteria -Archaea

Which of these groups of organisms have prokaryotic cells? Check all that apply -Animals -Bacteria -Plants -Protist -Fungi -Archaea

-Bacteria -Archaea

True or false: Prokaryotes lack cytoskeletal, elements.

-False

The long, threadlike structure protruding from the surface of prokaryotic cells that are used for locomotion are which of the following?

-Flagella

What property do flagella provide to bacterial cells?

-Motility

Which of the following is not a function of the bacterial cell wall? -Prevent loss of water -Prevent excessive uptake of water -Maintain cell shape -Motility

-Motility

Most bacterial cells are encased by a strong cell wall composed of which of the following?

-Peptidoglycan

Of the following choices, the presence of which would definitively identify a cell as prokaryotic?

-Pili

Which of the following structures are only found in prokaryotic cells (choose all that apply)? -Cell Wall -Pili -Plasma membrane -Nucleoid -Ribosomes

-Pili -Nucleoid

What structure functions in polypeptide synthesis?

-Ribosome

Archaea differ from bacteria in which of the following ways?

-They lack peptidoglycan.

Some bacteria produce protective polysaccharide capsules. Disease causing bacteria use these capsules to aid in

-adhering to surfaces

Some bacteria produce a jelly-like protective ___________________ made of polysaccharide, which aids in attachment to surfaces.

-capsule

The _______________ ______________ of a bacterium helps the organism maintain its shape and prevents the excessive loss of water.

-cell wall

Prokaryotes differ eukaryotes because they lack a membrane-enclosed ______________, which houses the DNA.

-nucleus

Most bacterial cells are encased by a strong cell wall composed of _____________________ which is a carbohydrate matrix cross-linked by polypeptides.

-peptidoglycan

Based on cell structure, all life forms can be placed into two categories, ___________________ and ______________________.

-prokaryotes and eukaryotes

Structures called ______________ are found in both prokaryotic and eukaryotic cells and are the sites of polypeptide synthesis.

-ribosomes