Answer:
How does a bacterial cell protect its own DNA from restriction enzymes?
B. by adding methyl groups to adenines and cytosines
Explanation:
The restriction modification system is for the cells defense mechanism. This system is composed of a restriction endonuclease enzyme and a methylase enzyme and each bacterial species and strain has their own combination of restriction and methylating enzymes.
Bacteria have restriction enzymes, also called restriction endonucleases, which cut double stranded DNA at specific points into fragments. This restriction enzymes don’t cleave the bacteria's own DNA because restriction enzymes do not exist in the bacterial DNA sequence.
But is if the recognition sequences exist but the enzyme is methylation specific. Bacteria prevent their own DNA from chop down by restriction enzyme through methylation of the restriction sites. Methylation of DNA is a very familiar way to modify DNA function and bacterial DNA is highly methylated.
Yes, the molecules do move. Although you can't tell, they are always moving. This is because the molecules have little energy. When they have little energy, they move slower. I hope this helps! :)
Answer:
streamlined bodies in dolphins and ichthyosaurs
Hope this helps! (づ ̄3 ̄)づ╭❤~
Answer: <span>aquatic animals
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External fertilization is the kind of fertilization that happens outside the female body. The female will put the unfertilized egg outside and the male will eject the sperm later.
This will cause the sperm have to mobilize further to the egg than internal fertilization. That makes this method only viable in water or highly moist area.
Work is the force acting through a distance and its formula is force