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ASU BIO 181 EXAM 2
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Exam study book Concepts of Biology of Samantha Fowler, Rebecca Roush, James Wise - ISBN: 9781680921021 (ASU BIO 181 EXAM 2)
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ASU BIO 181 EXAM 2 LATEST ACTUAL EXAM 190 QUESTIONSAND CORERCT DETAILED ANSWERS
Which strand is produced more rapidly? - ANSWER: Leading strand
During DNA replication in the lagging strand there is production of this component? -
ANSWER: Okazaki fragment
How many "stop" codons exist? - ANSWER: 3
The double helix of DNA is wrapped about 1¾ times around which of these
components? - ANSWER: Nucleosome
Which enzyme unwraps the double helix? - ANSWER: Helicase
In the ribosome, what is the name of the bond that links one amino acid to the next?
- ANSWER: peptide bonds
List the two basic categories of nitrogenous bases in nucleic acids. - ANSWER: purine
and pyrimidine
In DNA, what does the nucleotide labeled as A pair with? - ANSWER: Thymine
During DNA replication is greatly reduced by enzymes that proof read the newly
replicated DNA. - ANSWER: True
How many hydrogen bonds are there between an A and its paired nucleotide? -
ANSWER: 2
During mRNA maturation what is the name of the part of the mRNA that is
removed? - ANSWER: introns
DNA replication in eukaryotes is sped up by multiple origins of replication. -
ANSWER: true
RNA synthesis, also called RNA transcription occurs in three phases. List them from
beginning to end in order. - ANSWER: initiation, elongation, termination
Which nucleotide is different in RNA compared to DNA? - ANSWER: uridine
There are two types of protein synthesis in eukaryotic cells. These two types can be
distinguished because the polyribosome is either or . - ANSWER: free; membrane
bound
In eukaryotic cells the start codon for protein synthesis is . - ANSWER: Aug
, Which sugar is present in RNA? - ANSWER: ribose
For DNA Polymerase III to work which of these components has to act first? -
ANSWER: Primase
RNA is double stranded. - ANSWER: False
In the lagging stand, the DNA is read from the parental DNA's 3' to 5' end. -
ANSWER: True
Which enzyme is used first to permit DNA polymerase III to begin replicating the 3'
strand? - ANSWER: Primase
Strands of the backbone of DNA are parallel? - ANSWER: False
The DNA polymerase that replicates the parental strand of DNA reads the parental
DNA from 5' to 3" and makes a new DNA strand from 3' to 5'. - ANSWER: False
Uridine is a nucleotide in DNA. - ANSWER: False
List one type of post-translational modification - ANSWER: proteolysis
Replication of DNA is semi-conservative. - ANSWER: True
Protein synthesis changes from the language of to the language of . - ANSWER:
nucleotide; amino acid
In the ribosome, what pairs with the codon? - ANSWER: anticodon
The genetic code for the conversion of mRNA codons to proteins has redundancy. -
ANSWER: True
Assume that you have a eukaryotic cell with three chromosomes within it. How
many 5' ends would there be? - ANSWER: Gap 1: 6 Gap 2: 12
The Calvin-Benson cycle takes in _____________ and _____________ from the light
reaction and also _____________ ____________ to make carbohydrates. - ANSWER:
ATP; NADPH+H+ ; carbon dioxide
The antenna system is in the _____________ membranes. - ANSWER: thylakoid
The light reactions produce _____________ and _____________ and this process
also results in the release of _____________. - ANSWER: ATP; NAPDH+ H; oxygen
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