The backbone of DNA is held together by ____________ bonds.   Question 3 options:   N-glycosidic   Peptide   Hydrogen   Phosphodiester

QUESTION 26 In a double-stranded DNA molecule, how are the sequences of each strand related to each other?   A The sequences are identical.   B The sequences are identical except that one strand has a U where the other strand has a T.   C The sequences are the reverse compliment of each other and use the nucleotides, A, G, U, and C only.   D The sequences are the reverse complement of each other.

Question 7 Which is best explanation of "Law of Base Paring?" O determines the type of protein produced O allows variable width of the double helix O adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine O permits DNA bind to protein molecules during DNA replication determines the tertiary structure of a DNA molecule Question 8

Question 34

QUESTION 9 The covalent bond that joins amino acids together (once dehydration synthesis has occurred) is called O a disulfide bridge a peptide bond a phosphodiester bond an ester linkage QUESTION 10 DNA contains the sugar_whereas RNA contains_ glucose, fructose O fructose, glucose ribose, deoxyribose deoxyribose, ribose

Question 15 Three of these are related to a nucleotide. Select the exceptions. R group pentose O phospahte group O nucleoside n amino group

In the structure of DNA, the "double helix" is composed of ________________.   Question 7 options:   two (2) chromosomes that are twisted around each other   two (2) strands of linked nucleotides that are twisted around each other   four (4) strands of linked nucleotides that are bound by phosphate groups   two (2) strands of linked nucleotides that fold back and forth like an accordion   four (4) strands of linked nucleotides that are bound by sugar groups

QUESTION 25 Which of these characteristics does not describe the ß sheet? Amino acid side chains are located both above and below the sheet. B sheets have a pleated edge-on appearance. The sheets contain as few as two and as many as 22 polypeptide chains. Parallel B sheets containing fewer than five chains are the most common. They can exist in either parallel or antiparallel configurations.

Question 19 XIDID Proteins Proteins are determined by the structure of DNA and RNA. DNA consists of two chains of nucleotides held together by chemical bonds. Base pairing rules determine how the bases of each chain will bond to one another. RNA also has repeating nucleotides, bases that are held together by chemical bonds, and specific base pairing rules, but it is a single strand and has different bases than DNA. The sequence of DNA is rewritten into an RNA copy which then determines the sequence of amino acids of a polypeptide chain, the primary structure of a protein. A single amino acid is added to the protein strand for every 3 bases, or codons, in the RNA. The sequence of amino acids determines the way the protein will fold. The folding of the protein determines its function. The structure of DNA, RNA, and a protein are shown. DNA First nucleotide U A The triplet codon used to decipher the amino acids is mostly universal. Each amino acid has more than one codon. Methionine (AUG)…