C.it changes DNA,but it is random
<span>Yes, all living organisms are made of at least one cell (cell theory). But, remember, viruses and prions, which cause diseases, are not technically living things, and they are NOT made of cells. Also, if asked a question similar to this on a biology test, the teacher may be trying for an answer similar to: "Organisms are made of different organ systems, which are made of various related organs, which are made of different tissues working together, which are made of cells". </span>
Answer:
7. Which trait would be most closely associated with high levels of mobility?
a. A body cavity
b. Germ layers
c. Cephalization <-----this one
d. A cuticle
e. Incomplete metamorphosis
Explanation:
Answer:
Explanation:
The use of ointment for bacterial treatment does not fall into the first line of defence.
The first line of defence are physical (skin,tears, mucus) and chemical barriers( white blood cells also called neutrophils) which are prepared to defend the body against infection. The skin which is one of the first line of defence is a barrier that prevents entry of microorganisms the body. When the first mechanism is not effective especially for pathogens then the second mechanism is activated to get rid of the microorganism.
The use of ointment does not belong to any barrier or defence mechanism this is because it is not a natural way of getting rid of microorganisms within the body system.
