BIO 101 Ch. 10 Quiz

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Consider the following figure. It indicates that a single amino acid substitution ______.

may alter a protein so that it no longer functions properly

If one strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand?


The region of DNA where RNA synthesis begins is the ______.


How many nucleotides make up a codon?


Examine the genetic code table, shown below. The codon AGC codes for the amino acid ______.


If adenine makes up 20% of the bases in a DNA double helix, what percent of the bases are guanine?


The correct sequence of events occurring during transcription is ______.

initiation, elongation, termination

The expressed (coding) regions of eukaryotic genes are called ______.


How many amino acids are common to all living systems?


The backbone of DNA consists of ______.

a repeating sugar-phosphate-sugar-phosphate pattern

Mad cow disease is caused by

infectious proteins called prions.

After replication, ______.

each new DNA double helix consists of one old strand and one new strand

Peptide bonds form between ______.

amino acids

Where is translation accomplished?


Translation converts the information stored in ______ to ______.

RNA . . . a polypeptide

What protects mRNA from attack by cellular enzymes?

a cap and tail

The DNA codon AGT codes for an amino acid carried by a tRNA with the anticodon ______.


The shared genetic code of all life on Earth is evidence that ______.

all life shares a common ancestry

The modern phrasing of Beadle and Tatum’s hypothesis about relationships between genes and their products is "one gene-one ______."


If a strand of DNA has the sequence AAGCTC, transcription will result in a(n) ______.

single RNA strand with the sequence UUCGAG

DNA and RNA are polymers composed of ______ monomers.


The RNA that is translated into a polypeptide is ______ RNA.


What type of chemical bond joins the bases of complementary DNA strands?


RNA contains the nitrogenous base ______ instead of ______, which is only found in DNA.

uracil . . . thymine

Evidence for the spiral nature of DNA came from ______.

X-ray crystallography studies

A mutation within a gene that will insert a premature stop codon in mRNA would ______.

result in a shortened polypeptide chain

What is the ultimate source of all diversity?


The figure below shows the flow of genetic information in a eukaryotic cell. The transfer of information from DNA into an RNA molecule is known as ______.


Thymine and cytosine differ from adenine and guanine in that

thymine and cytosine are single ring structure, whereas adenine and guanine are double ring structure

HIV (human immunodeficiency virus) must use its own ______ to reproduce.

reverse transcriptase

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