Answer:
Because older cultures of gram-positive bacteria tend to lose their ability to retain crystal-violet in the peptidoglycan of their cell walls and can be confused with gram-negative bacteria.
Explanation:
Gram staining is used to differentiate between two major groups of bacteria. Gram-positive and gram-negative, these bacteria differ in the amount of peptidoglycan in their cell walls. Gram-positive bacteria have a higher amount of peptidoglycan, which absorbs the violet crystal complex used in gram staining, staining them purple/violet. Old cultures of gram-positive bacteria tend to lose the ability to retain the violet crystal and are stained by safranine, staining them red/pink and appear to be gram-negative.
<span>Current understanding of the evolutionary relations among organisms may change, as more species are discovered and studied.</span>
1. Proteins are denatured which makes it impossible for them to duplicate. (Proteins, are found in DNA)
2. Differing microbial organisms have different niches.
Acidophiles= acid loving,
Thermophiles= heat loving, etc.
Does that answer you question?
Explanation:
Similar rock types can be used as an evidence for continental drift because rocks forms under different geologic conditions.
Most natural depression on the earth surface are filled with thick sedimentary sequences that have been subjected to lithification.
In some terrain, magmatic activities are rife with prevailing tectonic settings controlling how they cool and solidify.
Also, some terrains have experience prolong metamorphic change and this dives spurious metamorphic transformation of minerals.
- A terrain will have a rock type that typifies it.
- If the two terrains become separated, it is possible to correlates the rock sequences in them.
- For sedimentary rocks, a geologic column and stratigraphy can be useful on correlating them.
- In metamorphic rocks. different facies have typical index minerals in them that can be used to match them.
- Dating some minerals in igneous rocks and even establishing sequences have proven useful in explaining continental drift between terrains
Learn more:
Continental drift brainly.com/question/5002949
#learnwithBrainly
Answer:
A) A system of classification based on homology
Explanation:
i hope this helped ;)
