Which of the following correctly states the functions of the rough endoplasmic reticulum? a. lipid metabolism, cholesterol synthesis, and synthesis of the lipid components of lipoproteins b. synthesis of cellular membrane components c. absorption, synthesis, and transport of fats d. storage of calcium ions

b. synthesis of cellular membrane components

Explanation:

Endoplasmic reticulum is a network of membranes fistulas; within the cytoplasm of a eukaryotic cells, where proteins and lipids are synthesized usually connected in continuum with the nuclear membrane of the cell.

The ER is of two kinds the smooth and the rough ER (Endoplasmic reticulum).

Functions of Rough endoplasmic reticulum includes; * Synthesis of protein * Degradation of worn out organelles

While the functions of Smooth endoplasmic reticulum includes; * Synthesis of lipid and steroids * Role cellular metabolism * Storage and metabolism of calcium * Catabolism of toxic substance.

Inference from the functions stated above shows that ER is actively involved in the synthesis of cellular membrane components.

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !

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.