Micro Lab 1 - Bacterial Cells - TB
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49 terms
Terms | Definitions |
|---|---|
 Which of the following groups of organisms is not prokaryotic? | eukarya |
| Which of the following is not a common bacterial shape? | disc |
| A small comma shaped bacteria is described as being a ____. | vibrio |
| Bacteria which show a wide variety of shapes within a single species is said to be | pleomorphic |
| Which of the following cellular structures are found only in prokaryotic cells? | pili |
| Extrachromosomal DNA prokaryotic cells can be found in the form of | plasmids |
| Which of the following cellular structures can be found in both prokaryotic and eukaryotic cells? | ribosomes |
| Cocci arranged in random clusters of cells represent which of the following arrangements? | staphylococci |
| Cocci shaped cells which divide along two planes will produce cells arranged into | tetrads |
| Prokaryotic cells divide by | binary fission |
| The funtion normally performed by mitochondria in eukaryotes is performed by ____ in prokaryotes. | cell membrane |
| The shape of bacterial cell is determined and maintained by the ____. | cell wall |
| The most important component of bacterial cell walls is | peptidoglycan |
| The outer cell membrane component of the cell wall of gram negative bacteria | contains lipopolysaccharide |
| Lipids would be found primarily in the cell wall of | acid-fast bacteria |
| The thinnest cell walls are found in ____ organisms. | gram negative |
| Penicillin controls the growth of bacteria by | preventing peptidoglycan synthesis |
| Which bacterial genus normally lacks a cell wall? | mycoplasma |
| The fluid-mosiac model describes the structure of | cell membrane |
| Cell membranes are composed primarly of | phospholipids and proteins |
| The charged, phosphate end of a membrane phospholipid is | hydrophilic |
| Bacterial ribosomes | have a sedimentation rate of 70S |
| Genetic information in bacteria | is sometimes found in the form of plasmids |
| Endospores are typically found in the genera | clostridium |
| Endospores are usually induced to form when | certain nutrients are depleted |
| Bacteria move by means of | flagella |
| Bacteria with flagella all over their surface are said to be | peritrichous |
| Some bacteria can transfer DNA to another cell using | conjugation pili |
| Eukarotic cells add rigidity to their plasma membrane by including what component in the membrane | sterols |
| Which of the following cell stuctures could be found in both prokaryotic and eukaryotic cells | ribosomes |
| Mitochondria have a | double membrane |
| Osmosis most directly involves | water moving down a concentration gradient |
| When the fluid within a cell has a highter concentration of dissolved substances than the fluid surrounding the cell, we say the fluid surrounding the cell is | hypotonic |
| A typical bacterial cell has a salt concentration of about 1%. If the cell is placed n a solution containing 10% salt, the net flow of water will be | out of the cell |
| Production of ATP occurs on the cell membrane of prokaryotic cells and in the lysosomes of eukaryotic cells | false |
| The cell wall controls the movement of small moleules into ad out of the cell | false |
| Bacterial endospores are reproductive structures | false |
| Bacteria with a single flagella at each end of the cell are said to be amphitrichous | true |
| Bacteria move by whipping their flagella back and forth | false |
| All bacteria produce capsules | false |
| ____ cells lack a nucleus and membrane bound organelles | prokaryotic |
| A spherical bacterium is known as a | coccus |
| ATP is produced in the ____ of eukaryotic cells. | mitochondria |
| The ___ lies just outside the cell membrane in most bacteria and prevents the cell from lysing when fluids flow into the cell. | cell wall |
| A bacterial cell wall consists of several components, the most important of which is ___, a polymer of N-acetylglucosamine and N-acetylmuramic acid. | peptidoglycan |
| The depletion of certain nutrients from the enviornment can cause some bacteria to form a protective structure known as a ____ | endospore |
| Water diffuese across a semi-permeable membrane during the process of | osmosis |
| The net flow of water will be out of a cell when a cell is placed in a ____ solution. | hypertonic |
| The bacterial cell wall is especially important when the cell is placed in a ____ solution because it prevents the cell from bursting. | hypotonic |
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