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Total questions: 18
Worksheet time: 9mins
The codons CGU and AGA both code for the amino acid arginine. What property of the genetic code does this illustrate?
One gene codes for one protein.
It is universal.
It is degenerate.
It is non-overlapping.
Which of the following biomolecules are involved in transcription?
(1) DNA
(2) RNA
(3) amino acid
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following descriptions about the process of translation is correct?
A new DNA strand is synthesized using an existing strand as a template.
Free RNA nucleotides bind to complementary bases on DNA.
Anticodons on mRNA bind to complementary codons on DNA.
Anticodons on tRNA bind to complementary codons on mRNA.
The tRNA anticodon for the sequence ATG on the coding strand of DNA is
UAC.
AUG.
TAC.
ATG.
A mutation results in a change in the sequence of bases in a DNA molecule, as illustrated below.
Normal DNA: ATAAGCATGACATTA
Mutated DNA: ATAGAGCATGACATTA
What is this type of mutation?
insertion
deletion
substitution
inversion
Which of the follow descriptions about a mutation is/are correct?
(1) It is a product of natural selection.
(2) It is a change in an allele due to a change in DNA.
(3) It is caused by the random fusion of gametes.
(1) only
(2) only
(2) and (3) only
(1), (2) and (3)
Which two enzymes are needed to produce recombinant plasmids?
DNA polymerase and DNA ligase
DNA polymerase and restriction enzyme
restriction enzyme and DNA ligase
restriction enzyme and RNA polymerase
Bacteria use restriction enzymes to
synthesize proteins.
synthesize DNA.
destroy foreign proteins.
destroy foreign DNA.
Which of the following statements about the production of human insulin by genetic engineering are correct?
(1) It involves the use of recombinant DNA technology.
(2) It has less risk of allergies than the traditional method.
(3) The cost of production is more expensive than the traditional method.
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following is an example of bioremediation?
using GM bacteria to produce human proteins
using bacteria to extract metals from ores
using bacteria to clean up oil spills
adding nitrogen-fixing bacteria to the soil before planting crops
Which of the following correctly defines the human genome?
all of the human genes
all of the DNA in human cells
all of the DNA and RNA in human cells
none of the above
Which of the following are the goals of the Human Genome Project?
(1) sequence human DNA
(2) map human genes
(3) allow transfer of genes from other species to humans
(1) and (2) only
(1) only (3) only
(2) and (3) only
(1), (2) and (3)
Q3: Which of the following are involved in the formation of a blood clot?
red blood cells
blood platelets
white blood cells
antibodies
fibrin
Q2: Which of the following is/are chemical barriers?
skin
sebum
blood clot
saliva
nasal hairs
Q1: What is the function of the plasma cell?
Releasing lymphokines
Secreting antibodies
Necessary for the formation of blood clots
Engulfing pathogens
Memorizing antigens
Q2: What is the function of the helper T cell?
Releasing lymphokines
Secreting antibodies
Necessary for the formation of blood clots
Engulfing pathogens
Memorizing antigens
Q3: What is the function of the memory B cell?
Releasing lymphokines
Secreting antibodies
Necessary for the formation of blood clots
Engulfing pathogens
Memorizing antigens
Q4: What is the function of the phagocyte?
Releasing lymphokines
Secreting antibodies
Necessary for the formation of blood clots
Engulfing pathogens
Memorizing antigens
