Answer:
By identifying the bones as being homologous structures and by proposing that humans, bats, and dolphins share a common ancestor.
Explanation:
The best answer is B - Proteins.
Proteins make up enzymes, or to put it another way enzymes are made up of protein. It is enzymes that speed up the chemical reactions. Enzymes are organic catalysts, substances that speed up a (biochemical) reaction but do not take part in the reaction and remain unchanged at the end of the reaction.
In man, there are many enzymes. The majority of these are found in the digestive system where they greatly aid the process of food breakdown from complex molecules to simple molecules. Examples include salivary amylase found in saliva, which begins the gradual breaking down of starch into glucose right from the moment food is placed in the mouth and mixed with saliva. Pepsin in the stomach breaks down protein.
Ultraviolet light can cause thymine dimers, potentially creating a mutation that could lead to cancer.
<h3>What Causes Thymine Dimers ?</h3>
In a single POLYNUCLEOTIDE CHAIN a pair of THYMINE residues that have become chemically bonded by the action of ULTRAVIOLET LIGHT. The lesion can inhibit DNA replication unless repaired.
Pyrimidine Dimers or thymine dimers are usually covalent links between adjacent pyrimidine bases on the same strand of DNA.
Thymine dimers distorts the DNA shape and prevents the accurate copying of DNA, which causes mutations.
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Electron sharing occurs so that atoms attain the configurations of noble gases
Carbohydrates is the correct answer :) hope I helped!
