Answer: B. Alleles.
A variant form of any given gene is an allele. One of the two alternative forms of any particular gene which is present at the same locus of the chromosome is an allele.
Different forms of an allele determine the phenotypic traits. Most of the multicellular organisms are diploid having two sets of chromosomes, each inherited from one parent. If both the alleles of any gene are same on the particular position of chromosome then it is termed as homozygous and if the alleles of the gene are different, it is called heterozygous.
I believe the most likely answer is that blood does not regulate filtration. yes, it does transport nutrients throughout the body, and it does help regulate body temperature. The blood also has white blood cells, which help to fight off foreign or not known cells and bacteria, and help to prevent infection. So, therefore, the most likely answer is A, To regulate filtration, because the blood does not regulate filtration, although it may help in the process at times.
Correct answer: B) Lipids
Lipids are that molecule, which contain hydrocarbon and is responsible for making the building blocks of the structure and function of cells.
Example of fats include waxes, oils, and vitamins such as A, D, E, and K.
The most important function of the fat inside the body is energy transformation and heat insulation.
The adipose tissue act as an insulator of the body by trapping the heat across the important organ of the body, they also provide cushioning to the organs and protect them from mechanical shock and damage.