I believe the answer is A!
The following options are attached to the question above:
A. A unicellular prokaryote
B. The shell surrounding a pilus
C. A type of virus
D. A particle that attacks viruses
ANSWERS
The correct option is A.
Bacteria are unicellular organisms, which have no true nucleus and they possess simple internal structures. They are microscopic organisms and they can be found in diverse places such as in the soil, ocean, in the human gut, in the air, etc. Bacteria are usually very small in size and large number of them usually exist together as a community. Bacteria are responsible for a large number of diseases in plants, animals and humans.
I believe it is the nitrogen base. Adenine pairs with Thymine, and Cytosine pairs with Guanine.
:)
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THe vascular tissue forms the bark is <span>cork cambium. </span>
While both show the process of natural selection, vestigial structures no longer have a working function, but are still present in an organism. An example of this in humans is the appendix. To humans, it doesn't necessarily serve any function, but it is just there as part of the human body.
On the other hand, analogous structures are similar structures in different species that perform the same function. We can think of it as wings on a moth, bird, and a fly. While the three do not share a common ancestor, the structure of the wings are said to be analogous.
