On what basis have bacteria traditionally been classified? Shape of colony Size of colony Gram stain All of the above

Gram-positive bacteria appear purple after Gram staining frequently cause diseases that cannot be cured by antibiotics have a thicker layer of peptidoglycan All of the above are true

Gram positive bacteria differ from Gram-negative bacteria in their response to the Gram stain their susceptibility to antibiotics the make up of their cell walls All of the above

One structure you would NOT find in a bacteria cell is a cell wall  Cell membrane Mitochondria chromosome

Bacteria cells have a cell wall only a cell membrane only both a cell membrane and an outer wall a cell wall inside of their cell membrane

Coccus Bacillus spirilla The most commonly encountered bacteria are roughly spherical. The microbiological term describing this shape is Coccus Bacillus spirilla

Another common bacterial shape is that of a rod, often called Coccus Bacillus spirilla

Site of energy production Site of protein synthesis In bacterial cells, ribosomes are packed into the cytoplasmic matrix and also loosely attached to the plasma membrane. What is the function of ribosomes? Site of energy production Site of protein synthesis Contains the genetic material Lets things in and out of the cell

Which of the following statements regarding bacterial DNA is true Bacteria only possess 4 chromosomes It is a single circular loop It contains histone proteins It is only single stranded

Petri dishes are incubated in an inverted position in order to prevent condensed moisture from dropping onto the colonies, thus contaminating them directly. The agar from drying out. the colonies from sinking into the medium. The bacteria from over-heating.

Cloudiness is a sign that bacteria have grown in a _______________ after inoculation and incubation. streak plate tube of nutrient broth Gram stain Simple stain

The optimum temperature for incubating an organism is the one at which it grows with the shortest generation time it has the longest time between cell divisions it is near one extreme of its range of tolerated temperatures its enzymes begin to denature

The stage of bacteria growth where death and growth are equal Lag Log Stationary death

E.Coli bacteria are Gram-negative cocci Gram negative baccili Gram positive cocci Gram positive baccili

The process in which the chromosomes of a bacteria replicates and the cell divides is called Transduction Binary fission Conjugation Meiosis

Prokaryotes are unlike all other organisms in that their cells Lack nuclei Have cell walls Have organelles Lack nucleic acids

Which statement is true about bacteria? Bacteria are living organisms that consist of one cell. Bacteria are the smallest of all living things. Bacteria are the oldest and most diverse life forms. All three statements are true.

There are three common shapes of bacteria. They are rods, spheres, and spirals. rods, spirals, and tubes. spheres, hexagons, and spirals. none of the above.

What has caused some bacteria to become drug-resistant? the misuse of antibiotics to try and cure viral infections like the common cold that 50 percent of all antibiotics end up in animal feed, creating super bacteria both 1 and 2 none of the above

When streaking a plate, the loop should be flamed At the beginning and end At the beginning and end and between the first 2 quadrants At the beginning and end and between the second and third quadrants At the beginning and end and between each quadrant