Indicate whether the sentence or statement is true or false.
When a tRNA anticodon binds to an mRNA codon, the amino acid detaches from the tRNA molecule and attaches to the end of a growing protein chain.
Only ribosomal RNA plays a role in translation.
During DNA replication, the molecule unzips and the exposed DNA nucleotides pair with other
specific nucleotides present in the nucleus
Humans pass exact copies of their DNA to their offspring.
Watson and Crick proposed a model of DNA
Amino acids are linked together by hydrogen bonds.
During transcription, the information on a DNA molecule is “rewritten” into an mRNA molecule.
All codons encode amino acids.
Identify the letter of the choice that best completes the statement or answers the question.
Purines and pyrimidines are
Chargaff’s rules, or the base-pairing rules, state that in DNA
ATTG : TAAC ::
Which of the following types of RNA carries instructions for making proteins?
Which of the following is not found in DNA?
Suppose that you are given a polypeptide sequence containing the following sequence of amino acids: tyrosine, proline, aspartic acid, isoleucine, and cysteine. Use the portion of the genetic code given in the table below to determine the DNA sequence that codes for this polypeptide sequence.
In order for protein synthesis to occur, mRNA must migrate to the
After the primary structure of a protein has been completed
Which of the following is not part of a molecule of DNA?
During replication in a molecule of DNA, one separation likely to occur is between
A gene may be described as
The synthesis of a new double strand of DNA begins when the two strand of the original DNA helix
Genes(DNA) affect cell structure and function by directing the synthesis of
Protein molecules are made up of
During, DNA replication, DNA
Which is not true about proteins?
Molecules of DNA are composed of long chains of
Watson and Crick were the first scientists to state that DNA
The two chains of a DNA molecule are connected by
All nucleotide molecules contain the same kind of
After DNA replication, the two DNA molecules that are made
Sixty-four codons for 20 amino acids requires that
Which of the following combines with amino acids
rRNA has a function in
The DNA code consists of sequences of nucleotides arranged in groups of
Unlike mRNA, the DNA molecule is
The number of bases in a row in a gene that codes a protein composed of 200 amino acids is
A DNA molecule unzips during
A DNA chain has the following sequence of bases, TAG. The corresponding messenger RNA
chain should have the sequence
Unlike DNA, RNA
Which molecule contains deoxyribose
Each combination of three nitrogenous bases on messenger RNA forms a (an)
In RNA, uracil is complementary to:
Once a molecule of transfer RNA has released its amino acid, the tRNA
If the sequence of bases in a segment of a DNA strand were cytosine, guanine, adenine, thymine, adenine, then the sequence in a complimentary strand of newly-made mRNA would be
Which sugar is present in RNA
RNA differs from DNA, in that RNA