Answer:
C
Explanation:
Ecological relationships exist between organisms in an ecosystem. MUTUALISM is one of these ecological relationships in which both organisms involved benefits from the relationship. It usually occurs in a way that the actions of one favors the other.
In this example, the bees feed on nectar produced by the flower a plant and carries pollen along when it feeds on the nectar produced by the flower of another plant. The bees are getting fed, thanks to the plant, while the plant is getting cross-pollinated, thanks to the bee.
An example could be oil (olive, almond)
Answer:
the proton is most likely the answer let me know if I'm wrong or right
Answer:
The correct option is option A
Explanation:
Restriction enzymes are endocleases that cleave DNA fragment (<u>of usually four, five or six nucleotide long</u>) at <u>specific sites to produce blunt or sticky ends</u>. They <u>recognize palindromic sequences of host DNA when cleaving the specific sites</u>. The sequences below (on complementary strands) give an example of a palindromic sequences.
5'-CCC║GGG-3'
3'-GGG║CCC-5'
As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.
5'- G║AATTC -3'
3'- CTTAA║G -5'
The explanation above shows options C and D are right while option A is wrong (hence the correct option).
Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites <u>which prevents restriction enzymes from recognizing restriction sites of their DNA;</u> this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.
