You are observing a Gram stain of spherical-shaped microorganisms that are linked in a chain and stain purple. How would you des
cribe these bacteria using the correct terminology for the cell shape and arrangement? a) gram-positive tetrads
b) gram-positive coccobacilli
c) gram-positive streptococci
d) gram-negative staphylococci
The correct answer is option c) "gram-positive streptococci".
Explanation:
Gram-positive bacteria are stained purple by crystal violet coloration, result of the cell wall interaction with the dye. On the other hand, streptococci are spherical-shaped microorganisms linked in a chain or a raw, which also are gram-positive. Therefore, the correct terminology of the bacteria observed in the laboratory will be a gram-positive streptococci.
The leguminous plant is applied as cover crop with rubber tree. They help in increasing the organic content in soil which aids the rubber plant to grow at the same time it prevents the soil erosion.
