Answer:
Teichoic acids
Explanation:
Teichoic acid has a negative charge due to the presence of phosphate in their structure. Since Teichoic acids forms part of Bacterial cell wall where it is linked to the underlying peptidoglucan or plasma membrane. This gives the Gram Positive bacteria a negative charge.
The negative charge makes the Teichoic acid to serve as a Cation sequestering mechanism
Gram negative cell wall does not contain teichoic acids. .
Answer:
D) A and C
Explanation:
Gram staining is a laboratory technique used for bacterial species. It is used to differentiate between two groups of bacteria based on the components of their cell wall. Gram staining was developed by a scientist called Christian Gram in the year 1884. In the gram stain procedure, the following occurs:
- Due to the thick peptidoglycan component of their cell wall, GRAM POSITIVE bacteria retains the crystal violet due and stain VIOLET.
- On the contrary, due to the thin peptidoglycan component of their cell wall, GRAM NEGATIVE bacteria do not retain the crystal violet dye and hence stain, RED.
Based on this, a bacteria that has been gram stained has been tested for its GRAM REACTION and microscopic morphological characteristics, since it is a microbe.
Answer:
Variables that can cause the ocean water salinity to decrease include the melting of glaciers, the inflow of river water, and rainfall.
Explanation:
I believe the answer is wind I'm not sure..Hope this helps!!
D so that bacteria doesnt multiply in the grains since moisture favours them