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ZanzabumX [31]
3 years ago
14

The only t cells that can directly attack and kill other cells are the ________.

Biology
1 answer:
kotykmax [81]3 years ago
6 0
The answer would be cytotoxic cells.
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Because they lack well-defined and complex organ systems, we hypothesize that _____ diverged from all other animals early in the
astraxan [27]

Answer:

Poriferans.

Explanation:

The evolution of the organisms has been occur from the simple organisms and leads to the evolution of the more complex organisms. This complexity arises due to the changing environment of the organisms.

The protozoans are the simplest organisms and all the other animal lineage has been derived from the porifera. The porifera are the cellular organisms that  do not have tissue level of organization and simple physiological system. Later, diverse and complex organisms arise from the porifera.

Thus, the correct answer is option (1).

4 0
3 years ago
An infant is born in the breech position, and assessment indicates the presence of erb palsy (erb-duchenne paralysis). which cli
Marina86 [1]
The clinical manifestation which supports this conclusion is that an injury to the brachial plexus which happens during birth. Erb is termed as a paralysis of the arm which is caused by an injury on upper arm's main nerves to be specifically the C5-C6 nerves.
It arrives most commonly on shoulder dystocia when there is a difficult birth. This paralysis can resolve on its own depending on nature of the damage.
6 0
3 years ago
Diet and stress are mostly examples of which type of factors?
shutvik [7]

Answer:

May be Nutritional but no sure

6 0
3 years ago
Read 2 more answers
How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence
aleksklad [387]

Answer:

scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.

so I think scientific conclusions are reliable

8 0
3 years ago
State and explain the disadvantages of using chemicals to kill insects
zheka24 [161]
If you use chemicals to kill insects, you could risk getting the chemicals in unwanted areas. This could kill plants, animals, and other living things. You could also contaminate water if the chemicals get rinsed/drained into a water source.
5 0
2 years ago
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