The body of a tiger is made of many types of cells, such as muscle cells and nerve cells. All of the tiger's cells are eukaryotic. What else is true about the tiger's cells? a) They are similar to bacterial cells.

b) Their organelles do not have a membrane.
c) Their is located in the nucleus.

d) They all have a looped strand of DNA ​

I would pick ...d

Explanation:

Every cell in the body has a loop of spiral staircase of cells that help pass genetic information to new cells.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.