Answer:
True
Explanation:
Cytokines are proteinaceous substances that are secreted by specific immune system cells. These belong to a category of signaling molecules that are helpful in communication between the cells of immune system and thus help to mediate and regulate immunity, inflammation and hematopoiesis. Cytokines have ability to act on three types of cells -
- The cell that secretes them
- The nearby cells
- The distant cells
These molecules bind to the receptors present on the responsive target cell and evoke a particular biological activity.
Answer:
Anticodons are part of the structure of tRNA
i.e transfer RNA
The answer is B. Nitrogen base
The sides of the DNA ladder are made of alternating sugar and phosphate molecules, the sugar being deoxyribose. The rungs of the ladder are pairs of four types of nitrogen bases (adenine, thymine, cytosine, and guanine)
Hope this helps :)
C.
1)<span>Pigs digestive tracts and nutritional needs are very similar to humans.
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2)<span>Pigs also have hearts that are similar in size and makeup to the human
</span><span>
heart. Pig heart valves are used to replace defective human heart valves.
3)</span><span>Answer "Pig" DNA is most similar to Human DNA..
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