BIOL 219 – The Living Cell:

Chapter 9 - Sample test questions. Chick on the answer you think is most appropriate to see if you are right.

A mutation occurs in a cell that will eventually become a sperm cell. Which of the following statements is true?
A. The mutation has no potential to affect offspring.
B. The mutation may be passed on to any offspring of the individual.
C. The sperm cell will die and not be useful as a gamete.
D. The resulting zygote will be anuepoid.
E. None are true.

Which of these events could cause a mutation that has the potential to be passed on to the next generation?
A. The placement of ribosomes on the endoplasmic reticulum.
B. The insertion of a nucleotide into an intron.
C. The movement of transfer RNA out of the nucleus.
D. The release of messenger RNA from DNA.
E. None of the above.

Which of the following observations supports the idea that most mutations will NOT affect the function of a eukaryotic genome?
A. Exons code for amino acid sequences.
B. Exons can be considered modular units of genes that can be rearranged to create new functions.
C. Introns exist between exons.
D. The vast majority of the genome is non-coding.
E. All of the above.

Mutations can be considered as the 'raw material' on which evolutionary processes work because they:
A. are the ultimate souce of all variation among genomes.
B. are usually a result of environmental factors.
C. tend to be neutral.
D. usually cause species of organisms to become extinct.
E. are magically delicious.

Mobile elements in the human genome:
A. contribute to genome variation.
B. are segments of DNA that can copy themselves and insert those copies back into the genome.
C. can induce recombination events that eventually lead to cancer.
D. make up around half of the DNA that is present.
E. all of the above.