It has been challenging to develop methods for outer-membrane(OM) isolation from <em>Leptospira</em> species and other spirochetes due to their distinctive design and a lack of sensitive cytoplasmic membrane indicators.
Spirochetes have an OM and a cytoplasmic membrane, which are divided by a periplasmic space, just like enteric gram-negative bacteria.The leptospiral OM contains a significant amount of LPS, and the leptospiral surface is dominated by its polysaccharides.
LipL32, LipL36, and LipL41 are three lipoproteins from the leptospiral OM.
Since LipL32 is an immunodominant antigen during human leptospirosis, it is recognized to be the most prominent protein in the leptospiral protein profile. OmpL1 and LipL41 together offer synergistic immunoprotection. LipL41 is a surface-exposed lipoprotein.
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Answer:
sympatric speciation
Explanation:
Species of fruit fly larvae in the genus Rhagoletis each feed on a particular kind of fruit. Rhagoletis pomonella feeds on the small red fruit of the hawthorn tree. In 1865, farmers in the Hudson River valley found that R. pomonella flies had begun attacking their apples and then spread to apple orchards in adjacent areas of Massachusetts and Connecticut. These now separate varieties of flies, the apple and haw flies, usually don't interbreed with each other because their periods of mating coincide with the different ripening times of apples and hawthorn fruit. Each variety is becoming specialized to feed and reproduce in its own particular microhabitat and may be transitioning to separate species.If the apple and haw flies become distinct enough to be separate species, their evolution is an example of sympatric speciation
Answer:
C. Snowshoe hares change their fur from white to brown to match their summer habitats.
Explanation:
The gene to change the fur color is passed on generation to generation, so the hares can survive in both winter and summer time.
Answer:
D
Explanation:
Prokaryotic cells have no nucleus, eukaryotic cells do. A squirrel is eukaryotic, therefore it’s genetic material will be stored in the nucleus.
Answer:YES
Explanation:A PDA is a type of congenital heart defect. A congenital heart defect is any type of heart problem that's present at birth. If your baby has a PDA but an otherwise normal heart, the PDA may shrink and go away. Some children need treatment to close their PDAs.
