Lipids consist of fats, phospholipids, and steroids, including cholesterol and saturated fats which are primarily sugar and starches. it is the most highly concentrated source of energy.

Lipids "mainly"consist of fats, phospholipids, and steroids, including cholesterol and saturated fats which are primarily sugar and starches. 

Lipids:

 

1.    consist of fats, phospholipids, and steroids

2.     include cholesterol and saturated fats

 

Lipids are a group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, phospholipids, and others.

 

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B.) nitrogen fixationnitrogen fixation is the process of nitrogen molecules seeping into the soil and inside plant roots and bacteria. it gives more "life" to plants

D, capsid protien, its the protein shell of a virus.