German roaches have flat bodies with six legs, two antennae projecting from their heads, and flat bodies, just like their American cousins and other cockroach species. Contrarily, American cockroaches are typically reddish-brown in appearance and develop to a length and width of around an inch and a half.
<h3>What is Cockroach?</h3>
Cockroaches are an insect paraphyletic category that includes all Blattodea members with the exception of termites. Only about 30 of the 4,600 cockroach species have any connection to habitations by people. Some species are infamous for developing pest problems.
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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.
Answer:
1- A species can migrate over long distances because they have metabolisms suitable for that, adaptation mechanisms to withstand different adversities. They usually do it to be able to reproduce in ideal climaxes or feed on certain living things or plant species.
2-The existence of oil fields, or oil towers for the manufacture of fuel.
3-Implement electric cars or batteries that do not depend on fuels such as diesel, naphtha.
Explanation:
In this exercise it is good to highlight that during the migration of animals of different species their numbers decreased both to reach the territory to which they migrate and by human intervention in nature in a harmful way.
They should be carbohydrates, fats (lipids) and protein. they are labelled as primary food substances and they're essential to life. they can provide energy and raw material for life processing. although mineral ions and vitamin are important too, but they only need a small amount.
C. The cell's ability to feed enough
