Multiple Choice Questions
 

1.  Among the microorganisms, various genomes can include  
A.  Chromosomes
B.  Plasmids
C.  Mitochondrial DNA
D.  Chloroplast DNA
E.  All of the choices are correct

2.  Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have  
A.  Histone proteins
B.  Chromosomes in a nucleus
C.  Several to many chromosomes
D.  Elongated, not circular, chromosomes
E.  All of the choices are correct

3.  Which of the following is not true of an organism’s genotype?  
A.  Is inherited
B.  Are structural genes coding for proteins
C.  Are genes coding for RNA
D.  Are regulatory genes controlling gene expression
E.  Are the expressed traits governed by the genes

4.  The _____ is all of the genetic material of a cell.  
A.  Chromosome
B.  Plasmid
C.  Prophage
D.  Genome
E.  Proteome

5.  A nucleosome is a linear chromosome wound around the  
A.  Nuclear membrane
B.  rRNA
C.  mRNA
D.  Histone
E.  Nucleolus

6.  Each _____ is a specific segment of the DNA with the code for production of one functional product.  
A.  Intron
B.  Exon
C.  Gene
D.  Operator
E.  Triplet

7.  The expression of genetic traits is the  
A.  Genome
B.  Genotype
C.  Proteome
D.  Phenotype
E.  Proteotype

8.  The DNA of microorganisms is made up of subunits called  
A.  Histones
B.  Amino acids
C.  Nucleotides
D.  mRNA
E.  Polymerases

9.  Which is incorrect about purines?  
A.  Only found in DNA, not in RNA
B.  Are nitrogenous bases
C.  Always paired with a specific pyrimidine
D.  Include adenine and guanine
E.  Found within nucleotides

10.  The antiparallel arrangement within DNA molecules refers to  
A.  Each base bonding at the 1′ position of the sugar
B.  A purine always bonding to a pyrimidine
C.  One helix strand that runs from the 5′ to 3′ direction and the other strand runs from the 3′ to 5′ direction
D.  An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule
E.  None of the choices are correct