Which of the following statements about biomolecules is true?

a. nucleic acids (dna/rna) are responsible for information storage, transmission, and expression.

b. proteins are broken down as a primary fuel source.

c. lipids are responsible for the transport of substances into the cell.

d. carbohydrates are responsible for the catalysis of chemical reactions.
a. nucleic acids (dna/rna) are responsible for information storage, transmission, and expression.

A

Explanation:

Nucleic acids are one of the four biomolecules. They are polymers made up of monomer building blocks called nucleotides, hence, they are also called polynucleotides. Deoxyribosenucleic acid (DNA) and Ribosenucleic acid (RNA) are the two nucleic acids. They are composed of nucleotide subunits, in which each nucleotide has a structure made up of pentose sugar (Deoxyribose in DNA, and ribose in RNA), phosphate group and nitrogenous bases (Adenine, Guanine, Cytosine and Thymine (DNA /Uracil (RNA).

DNA is the storage molecule of the genetic material in living cells. They contain sections called GENES, that holds the information needed for the optimal functioning of every organism and pass genetic traits to offsprings. These information has to be expressed to produce functional products (proteins). This expression is done by transcribing the DNA into RNA, which is subsequently translated into proteins.

Hence, option A is the true option

Option B belongs to carbohydrates while Option D is for proteins.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."