Exam 4- Chapters 16-20
Part 1 of 1 - 90.0/ 100.0 Points
Question 1 of 40
2.5/ 2.5 Points
A donkey and a horse can mate and produce a mule. Why are they not considered to be the
same species?
E. the mule is sterile
Feedback: Correct
Question 2 of 40
2.5/ 2.5 Points
Sequencing the genomes present in a biofilm is known as ________.
B. metagenomics
Feedback: Correct
Question 3 of 40
2.5/ 2.5 Points
Gradual speciation is more likely to be associated with small changes building up in
C. stable environments
Feedback: Correct
, Question 4 of 40
2.5/ 2.5 Points
Stabilizing selection happens when
D. the intermediate phenotype of a population is more likely to survive
Feedback: Correct
Question 5 of 40
2.5/ 2.5 Points
A gene is made up of three exons (numbered consecutively) with two introns (intron 1
between exons 1 and 2 and intron 2 between exons 2 and 3). What would happen if there
were a mutation at the 3’ splice site of intron 1?
D. mRNA with all three exons along with intron 1
Feedback: Correct
Question 6 of 40
0.0/ 2.5 Points
Bacillus thuringienesis bacteria produce a toxin that harms insects. The bacteria used to be
grown in culture and sprayed on crops as an insecticide. How has genetic engineering
eliminated the need to do this?
A. engineered motility for the bacteria so they can move to the crops themselves
B. put the toxin gene into the plants themselves to make their own toxin
C. engineered insects to be able to use Bacillus thuringienesis as a food source
D. put the toxin gene into humans so that they are resistant
Feedback: Incorrect-
Learning Objective Text: Describe uses of biotechnology in medicine and agriculture
Part 1 of 1 - 90.0/ 100.0 Points
Question 1 of 40
2.5/ 2.5 Points
A donkey and a horse can mate and produce a mule. Why are they not considered to be the
same species?
E. the mule is sterile
Feedback: Correct
Question 2 of 40
2.5/ 2.5 Points
Sequencing the genomes present in a biofilm is known as ________.
B. metagenomics
Feedback: Correct
Question 3 of 40
2.5/ 2.5 Points
Gradual speciation is more likely to be associated with small changes building up in
C. stable environments
Feedback: Correct
, Question 4 of 40
2.5/ 2.5 Points
Stabilizing selection happens when
D. the intermediate phenotype of a population is more likely to survive
Feedback: Correct
Question 5 of 40
2.5/ 2.5 Points
A gene is made up of three exons (numbered consecutively) with two introns (intron 1
between exons 1 and 2 and intron 2 between exons 2 and 3). What would happen if there
were a mutation at the 3’ splice site of intron 1?
D. mRNA with all three exons along with intron 1
Feedback: Correct
Question 6 of 40
0.0/ 2.5 Points
Bacillus thuringienesis bacteria produce a toxin that harms insects. The bacteria used to be
grown in culture and sprayed on crops as an insecticide. How has genetic engineering
eliminated the need to do this?
A. engineered motility for the bacteria so they can move to the crops themselves
B. put the toxin gene into the plants themselves to make their own toxin
C. engineered insects to be able to use Bacillus thuringienesis as a food source
D. put the toxin gene into humans so that they are resistant
Feedback: Incorrect-
Learning Objective Text: Describe uses of biotechnology in medicine and agriculture
