Warm-up Take out a sheet of paper: Write: Unit 5 Review at the top. As each question goes on the board, write that question down and answer it. When answers come up, either write correct next to what you wrote, or write the correct answer down.
DNA REVIEW GAME
Which molecule of heredity contains deoxyribose? A) RNA B) mrna C) ribosomes D) DNA
D - DNA
What are the three parts of a nucleotide? A) Phosphate group, oxygen base, and 5-carbon sugar B) Oxygen group, nitrogenous base, and 5-carbon sugar ) Phosphate group, nitrogenous base, and 5-carbon sugar D) Phosphate group, nitrogenous base, and 5-carbon lipid
C Phosphate, nitrogen base, sugar
The four nucleotides that make up DNA are A) adenine, guanine, cytosine, and thymine B) adenine, lactose, cytosine, and thymine C) adenine, uracil, cytosine, and thymine D) adenine, uracil, guanine, and cytosine
A) adenine, guanine, cytosine, and thymine
According to Chargaff s rules, the amount of adenine in DNA equals the amount of A) thymine B) cytosine C) guanine D) cytosine and guanine
A) thymine
Cytosine always bonds with A) adenine B) guanine C) thymine D) uracil
B) guanine
What did Rosalind Franklin s X-ray patterns suggest to Watson and Crick? A) DNA contains 2 strands, each twisted around each other B) RNA is an exact duplicate of the DNA strands C) Adenine and thymine always bond together D) Adenine and cytosine always bond together
A) DNA contains 2 strands, each twisted around each other
Which scientist(s) discovered the shape of the DNA molecule? A) Chargaff B) Griffith C) Watson and Crick D) Hershey and Chase
C) Watson and Crick
The structure of a DNA molecule resembles a C) circle A) straight line D) triple helix B) double helix
B) double helix
A) Sugar molecules B) Phosphate groups C) Nitrogenous bases D) None of the above In the Watson-Crick model of DNA, the two strands of double helix are united by Hydrogen Bonds between
C) Nitrogenous bases
mrna is made through the process of A) replication C) translation B) duplication D) transcription
D) transcription
In RNA, what nucleotide replaces thymine? A) cytosine B) uracil C) guanine D) adenine
B) uracil
Which of the following is true? A) A mrna molecule has the form of a double helix B) The uracil nucleotide consists of the uracil nitrogen base, a deoxyribose sugar, and a phosphate group C) When trna attaches to mrna during translation, cytosine nucleotides pair with guanine nucleotides and adenine nucleotides pair with thymine nucleotides D) mrna is single stranded
D) mrna is single stranded
Codons are A) Sequences of proteins B) A site on a trna C) Three nucleotide sequences of mrna D) Sequences of polypeptides
C) Three nucleotide sequences of mrna
The process in which the mrna emerges from the nucleus and moves to the cytoplasm where it is converted into a protein chain is known as A) transcription B) transformation C) translation D) replication
C) translation
What is the initial codon in most molecules of mrna? A) AUG B) UGT C) GUA D) ATG
A) AUG
Which of the following is not true of a codon? A) It consists of three nucleotides B) It may code for the same amino acid as another codon C) It never codes for more than one amino acid D) It extends from one end of a trna molecule
D) It extends from one end of a trna molecule
In translation, amino acids bond to molecules of A) DNA B) mrna C) trna D) rrna
C) trna
Where in the cell are proteins assembled? A) ribosomes B) mitochondria C) nucleus D) cell membrane
A) ribosomes
Which component is not directly involved in the process known as translation? A) mrna B) DNA C) ribosomes D) trna
B) DNA
A) insertion B) deletion C) point D) inversion When one base in a strand of DNA is replaced by another, what kind of mutation has occurred?
C) point
An example of a mutagen is A) Cigarette smoke B) X-rays C) ultraviolet light D) All of these
D) All of these
The process of copies the DNA of a cell. A) transcription B) Translation C) replication D) transformation
C) replication
Which of the following is a 3- nucleotide sequence on a trna molecule that corresponds to a specific codon on an mrna molecule A) mutation B) anticodon C) protein D) Amino acid
B) anticodon
This describes one of twenty monomers that combine to make proteins.. A) mutation B) anticodon C) protein D) Amino acid
D) Amino acid
This describes a change in the genetic material. A) mutation B) anticodon C) protein D) Amino acid
A) mutation
Which of the following describes a molecule composed of one or more chains of amino acids? A) mutation B) anticodon C) protein D) Amino acid
C) protein
What kind of molecule is shown in the illustration below? There are no choices, since you should know this by the shape of the picture.
trna
If an original strand of DNA is A - C - G - T, what is the replicated copy (daughter strand)? A) T G- C - A B) U - G C- A C) T - G C- U D) U G C- T
A) T G- C - A
What is the amino acid coded for by the codon AGU?
Sernine
The paper in your hand Study it for the test! Complete your Review Packet and turn in the day of the test!