Phospholipids are important components of . 1) the plasma membrane of cells
2)the ring structure of steroids
3) the waxy covering on leaves
4)the double bond in hydrocarbon chains

1) the plasma membrane of cells

Explanation:

Phospholipids are made of a phosphate group and fatty acid chain. The phosphate group is hydrophilic (attracted to water), while the fatty acid group is hydrophobic (repelled by water). This is important to the membrane because it allows for the cell to interact with the water inside and outside the cell. Therefore, the answer is number 1.

answer; the above statement is (true);

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.