write about cultural characteristics of bacteria
Answers
Answered by
1
heyy dear ur answer..........
The basic categories of bacterial colony appearance, forms and characteristics on solid media include:colony form (shape), margin (edge), elevation, pigmentation (color), texture, and pattern of growth. Colonyshape may be described as circular, irregular, or punctiform (tiny). The margin may be entire (smooth withno irregularities), undulate (wavy), lobate (lobed), filamentous, or rhizoid (branched like roots). Colonyelevations include flat, raised, convex, pulvinate (very convex), and umbonate (raised in the center). Colonytexture may be moist, mucoid, or dry. Pigment production may be influenced by environmental factors suchas temperature and nutrient supply. Colony color may be combined with optical properties such as opaque,translucent, shiny, or dull.Terms Used for Growth in Nutrient Broth
1. Uniform fine turbidity= finely dispersed growth throughout (cloudy)
2. Flocculent= flaxy aggregates dispersed throughout
3. Pellicle= thick, padlike growth on the surface
4. Sediment= concentration of growth at the bottom of the broth culture may be granular, flaxy, orflocculent
5. Ring formation= 6.
a ring of growth on the surfaceTerms Used for Growth on Nutrient Slants=
Abundance of growth - the amount of growth is designated as none, slight, moderate, or large
7.
Pigmentation= chromogenic bacteria may produce intracellular pigments that are responsible for the color of the colonies on the agar surface. Other bacteria produce extracellular soluble pigments that are excreted into the medium and that also produce a color. Most microorganisms are non chromogenic and will appear cream, white, or gray...............
hope this will help u ...............@kundan
The basic categories of bacterial colony appearance, forms and characteristics on solid media include:colony form (shape), margin (edge), elevation, pigmentation (color), texture, and pattern of growth. Colonyshape may be described as circular, irregular, or punctiform (tiny). The margin may be entire (smooth withno irregularities), undulate (wavy), lobate (lobed), filamentous, or rhizoid (branched like roots). Colonyelevations include flat, raised, convex, pulvinate (very convex), and umbonate (raised in the center). Colonytexture may be moist, mucoid, or dry. Pigment production may be influenced by environmental factors suchas temperature and nutrient supply. Colony color may be combined with optical properties such as opaque,translucent, shiny, or dull.Terms Used for Growth in Nutrient Broth
1. Uniform fine turbidity= finely dispersed growth throughout (cloudy)
2. Flocculent= flaxy aggregates dispersed throughout
3. Pellicle= thick, padlike growth on the surface
4. Sediment= concentration of growth at the bottom of the broth culture may be granular, flaxy, orflocculent
5. Ring formation= 6.
a ring of growth on the surfaceTerms Used for Growth on Nutrient Slants=
Abundance of growth - the amount of growth is designated as none, slight, moderate, or large
7.
Pigmentation= chromogenic bacteria may produce intracellular pigments that are responsible for the color of the colonies on the agar surface. Other bacteria produce extracellular soluble pigments that are excreted into the medium and that also produce a color. Most microorganisms are non chromogenic and will appear cream, white, or gray...............
hope this will help u ...............@kundan
Answered by
1
☞ᴄʜᴀʀᴀᴄᴛᴇʀɪsᴛɪᴄs ᴏғ ʙᴀᴄᴛᴇʀɪᴀ
- ʙᴀᴄᴛᴇʀɪᴀ ᴀʀᴇ sɪɴɢʟᴇ-ᴄᴇʟʟᴇᴅ ᴏʀɢᴀɴɪsᴍs.
- ᴛʜᴇʏ ʟᴀᴄᴋ ᴏʀɢᴀɴᴇʟʟᴇs sᴜᴄʜ ᴀs ᴄʜʟᴏʀᴏᴘʟᴀsᴛs ᴀɴᴅ ᴍɪᴛᴏᴄʜᴏɴᴅʀɪᴀ.
- ᴛʜᴇʏ ᴅᴏ ɴᴏᴛ ʜᴀᴠᴇ ᴛʜᴇ ᴛʀᴜᴇ ɴᴜᴄʟᴇᴜs ғᴏᴜɴᴅ ɪɴ ᴇᴜᴋᴀʀʏᴏᴛɪᴄ ᴄᴇʟʟs.
- ʙᴀᴄᴛᴇʀɪᴀ ᴀʟsᴏ ʜᴀᴠᴇ ᴀ ᴄᴇʟʟ ᴍᴇᴍʙʀᴀɴᴇ.
- ᴀ ᴄᴇʟʟ ᴡᴀʟʟ ᴛʜᴀᴛ ɪs ᴏғᴛᴇɴ ᴍᴀᴅᴇ ᴏғ ᴘᴇᴘᴛɪᴅᴏɢʟʏᴄᴀɴ ɪs ᴀʟsᴏ ᴘʀᴇsᴇɴᴛ ʜᴇʀᴇ.
EXAMPLE-:COCCUS , BACILLUS,MYCOPLASAM, CYNOBACTERIA,etc
Similar questions