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Exam 22: Nucleic Acids and Protein Synthesis

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Question 21

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When inserted into a bacterium,recombinant DNA can be used to prepare large quantities of useful proteins.

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Question 22

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Which is a genetic disease?

A) Tay-Sachs disease
B) Sickle cell anemia
C) Galactosemia
D) Huntington's disease
E) All of the diseases are genetic diseases.

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Question 23

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If 22% of the nucleotides in a sample of DNA contain the base adenine (A),then 22% of the nucleotides in the same sample of DNA contain the base guanine (G).

If a single strand of a gene contains 726 bases,242 amino acids will make up the polypeptide prepared from it,assuming every base of the gene is transcribed and then translated.

Which base is found in DNA or RNA,but not both?

Which is not one of the three stages in translation?

Which structure represents a nucleotide?

A virus is an infectious agent consisting of a DNA molecule and an RNA molecule that is contained within a protein coating.

There was a mix-up in the hospital nursery and there is a question as to which baby belongs to a set of new parents. The given gel contains the DNA fingerprint of the new mother (Lane 1),the new father (Lane 2),and two infants (Lanes 3 and 4). The DNA fingerprinting indicates that the infant tested in Lane ________ is the child of these parents.

A triplet codon is a sequence of three amino acids in a protein that signals for transcription.

For the DNA segment 3'-ACCTGCCTACCCG-5',the sequence of the mRNA molecule synthesized is 5'-UGGACGGAUGGGC-3'.

The double-stranded DNA helices wind around a core of protein molecules called ________ to form a chain of ________.

Which statement about RNA codons is not true?

Which is not one of the elements needed to amplify DNA by polymerase chain reaction (PCR) ?

In the process of translation,the genetic code contained in DNA is rewritten in mRNA,which leaves the nucleus and carries the information to the ribosomes for protein synthesis.

What polypeptide would be synthesized from the following template strand of DNA: 3' CGG AGA CGG ACG 5'?

Which is the structure of ATP?

Hydrogen bonding plays an important role in all but one of the items below. Which one does not involve hydrogen bonding?

Which is not a type of RNA molecule?

Which is not a stop codon?