AP Biology Practice Test: Unit 6 — Gene Expression & Regulation

Which of the following nucleic acids is not found in RNA?

Which is the correct sequence of information flow in a cell?

Which of the following is not a component of DNA?

What aspect of the DNA molecule allows for it to replicate a duplicate copy of itself?

What is the name of the DNA strand that elongates away from the replication fork in a series of segments?

DNA replication begins at short stretches of DNA with a specific sequence of nucleotides called:

Which enzyme catalyzes the synthesis of new DNA by adding nucleotides to a preexisting chain?

What property of DNA allows it to replicate and repair?

Which statement best describes the function promoter?

During this stage of gene expression, genetic information is copied from the template strand of DNA.

During this stage of gene expression, mRNA is processed through ribosomes and polypeptides are linked together into chains.

This process involves modifying the ends of the pre-mRNA molecules by modifying each end, cutting out introns and splicing remaining parts together.

Which answer shows the correct sequence of information flow from gene to protein?

If a DNA template strand has the following sequence, what is the correct mRNA sequence?

DNA Template Strand Sequence: AAACCGAGT

Questions 15–16

If a codon has the following sequence, what is the anticodon?

Codon: UCA

If a DNA template strand’s DNA sequence is AAA, what amino acid will be formed?

Mad cow disease causes normal versions of a protein in the brain to misfold, causing brain damage. What is responsible for the change in the shape of the protein?

Which portion of the brain is responsible for homeostasis, transmission of information to and from higher brain centers, and coordinated movement? It is sometimes referred to as the “lower brain.”

Which part of the cerebral cortex controls vision?

If your grandfather started showing symptoms of muscle tremors, poor balance, and shuffling gait, which of the following diseases should you suspect?

If an individual suspected of having brain damage presented symptoms affecting his verbal and written communication, the damage is likely to be present in which lobe(s)?

Which type of sensory cell receptor is responsible for guiding the migration of the robins?

Which type of signaling molecule is triggered by endocrine glands?

Which of the following correctly describes aspects of the endocrine system and the nervous system?

Which of the following gland is incorrectly matched to its function?

Chromosome structure can be altered by damages to the chromosome, or during an error in meiosis.

When a chromosomal fragment reattaches to the original chromosome in reverse order, it is called:

If a mutation causes a misplacement of a structure on an organism, such as a leg growing where an antennae on a fruit fly should be, the mutation is likely to be in:

If a mutation in a cell inhibits the production of a tumor-suppressor protein, the cell is much more likely to:

What type of point mutation causes translation to be terminated prematurely, resulting in a shorter polypeptide than was encoded by the normal gene?

This type of mutation frequently alters the genetic message by changing the reading frame, causing all the nucleotides “downstream” of the mutation to be improperly grouped into codons.

What enzyme is responsible for the reverse information flow of RNA to DNA in retroviruses, such as HIV, allowing the virus’s genetic information to be permanently integrated into the hosts cell’s DNA?

Questions 32–33

In the classic experiment by Frederick Griffith, two strains of the bacterium Streptococcus pneumoniae were studied. The smooth “S” strain bacteria can cause pneumonia in mice because they have a capsule that protects them from the defense system of animals. The rough “R” strain bacteria do not have a capsule, and are thus nonpathogenic. Griffith injected the mice with two strains of the bacteria to test for the trait of pathogenicity.

What important conclusion did Griffith reach after conducting his experiment?

In the classic experiment by Frederick Griffith, two strains of the bacterium Streptococcus pneumoniae were studied. The smooth “S” strain bacteria can cause pneumonia in mice because they have a capsule that protects them from the defense system of animals. The rough “R” strain bacteria do not have a capsule, and are thus nonpathogenic. Griffith injected the mice with two strains of the bacteria to test for the trait of pathogenicity.

Which group demonstrates that DNA is the agent of transformation?

Which type of bacteriophage reproduces only by the lytic cycle?

Bacteriophages are able to carry bacterial genes from one host cell to another resulting in genetic recombination. This process is called: