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