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DNA Structure, Replication, Transcription And Translation
Test Description: Prepare for Wednesday's quiz!
Instructions: Answer all questions to get your test result.
1) How are DNA strands held together?
A
Hydrogen bonds between sugars
B
Hydrogen bonds between bases
C
Covalent bonds between bases
D
Water
2) Which of the following correctly summarizes the base-pairing rules in DNA?
A
A-C, T-G
B
A-T, C-G
C
A-U, C-G
D
A-G, C-T
3) Translation involves the assembling of proteins. Which of the following forms of RNA is responsible for carrying a formed amino acid to the protein assembly site during translation?
A
RNA polymerase
B
mRNA
C
tRNA
D
rRNA
4) Which of the following best describes the product of RNA translation?
A
a chromosome
B
a DNA molecule
C
a protein
D
an RNA molecule
5) Which of the following correctly describes the components of DNA?
A
DNA is made up of nucleotides consisting of the sugar ribose, a carbon ring, and one of four phosphorus bases.
B
DNA is made up of nucleotides consisting of the sugar deoxyribose, a phosphate, and one of four nitrogenous bases.
C
DNA is made up of proteins consisting of the sugar ribose, a carbon ring, and one of four phosphorus bases.
D
DNA is made up of proteins consisting of the sugar deoxyribose, a phosphate, and one of four nitrogenous bases.
6) A parent DNA molecule replicates, resulting in two daughter DNA molecules. Which of the following is true?
A
Each daughter molecule contains two new strands of DNA.
B
Each daughter molecule contains one DNA strand from the parent molecule.
C
Each daughter molecule contains two DNA strands from the parent molecule.
D
Each daughter molecule contains four total strands of DNA.
7) The genetic information that is passed from a parent to its offspring is found in _______.
A
amino acids
B
hydrogen bonds
C
DNA molecules
D
carbon atoms
8) In eukaryotic organisms, DNA transcription occurs in the _______ of a cell.
A
ribosome
B
mitochondria
C
nucleus
D
cytoplasm
9) Which of the following cellular materials is solely composed of DNA and proteins?
A
ribosomes
B
chromosomes
C
Golgi complex
D
mitochondria
10) The nucleotide of DNA is one large molecule composed of three smaller molecules. Which of the following sets of molecules bond together to form a nucleotide?
A
a purine, a pyrimidine, and a five-carbon sugar
B
adenine, thymine, and cytosine
C
a nitrogen atom, a phosphate atom, and a five-carbon sugar
D
deoxyribose, a nitrogen base, a phosphate group
11) What is a gene?
A
a sex cell that aids in organism reproduction
B
any single amino acid in a multicellular organism
C
a set of instructions in the DNA sequence of an organism
D
a characteristic of any organism
12) All cells contain DNA, which provides information for the cells to make
A
new types of organisms.
B
different kinds of proteins.
C
new types of genes.
D
different kinds of DNA.
13) The first step in the process of gene expression is transcription. What is the product of transcription during gene expression?
A
a molecule of thymine
B
an RNA polymerase
C
a molecule of RNA
D
a codon
14) After the process of _______ occurs, each daughter cell receives an exact copy of the parent cell's DNA.
A
DNA transcription
B
DNA elongation
C
DNA replication
D
DNA translation
15) Which of the following is a true statement about codons?
A
In translation, an mRNA codon is recognized by its complementary amino acid.
B
In translation, an mRNA codon is recognized by its complementary tRNA.
C
A codon is a sequence of three amino acids.
D
A codon is a sequence of four nitrogenous bases.
*select an answer for all questions
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