A student hypothesized that EC growth might be affected by the DNA from circulating erythrocytes. Is this student’s hypothesis reasonable?

The options are not given, here are the options.

A) No the DNA in circulating erythrocytes ins needed to help transport O2 through the capillaries

B) No circulating erythrocytes contain DNA.

C) Yes DNA is responsible for cell division in most cells

D) Yes circulating erythrocytes carry DNA nutrients through the capillaries

The correct option is B.

No circulating erythrocytes contain DNA.

Explanation:

Erythrocytes or red blood cells is a biconcave disc that contain haemoglobin which help to carry oxygenated blood in the body.

Circulating erythrocytes do not contain dna because they lack nuclei and organelles, cannot synthesize any RNA, therefore cannot divide and have limited repair capabilities.

Because they cannot carryout protein synthesis, no virus can evolve and invade the red blood 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.