BSC 1005 Final Exam Review
Which of the following choices represents the genotype of an individual diploid organism?
BbCCdd
Which of the following statements regarding genes is NOT true?
In sexually reproducing species, each cell contain a single copy of every gene
DNA is one of the features common to all known forms of life
It is the blueprint that guides the growth, development, behavior, & reproduction of all organisms
A scientific hypothesis must be constructed with which of the following characteristics?
It provides a reasonable explanation to a question & is consistent whit current observations; it must also be testable & falsifiable.
The key enzyme used during transcription is
RNA polymerase
In humans, the "master sex switch" that determines whether an embryo will become a male is the
SRY gene
A group of researchers conducted an experiment & collected the data. How does the hypothesis help the researchers?
The hypothesis was supported because all the members of the control group survived while most of the members of both the treatment groups died by the end of the study.
Why did Mendel analyze thousands of plants while conducting his research?
The likelihood of seeing a clear pattern is higher with a larger data set
Which of the following statements is true of chloroplasts?
They capture energy from sunlight
Why do scientists repeat their experiments over and over again?
They must make sure the results were not an accident and that they are repeatable
An allele is
a version of a gene
Each set of 3 bases in an mRNA molecule codes for one of 20 specific
amino acids
Bats use echolocation to orient themselves and locate objects. Doing this requires special adaptations in their inner ear, midbrain, and auditory cortex of their cerebrum. The echolocation system of bats is an example of
an organ system
Nucleotides
are the building blocks of nucleic acids
An example of a saturated fat would be
bacon grease
The order of the basses in DNA determines the order of the
bases in mRNA
If 2 different alleles for the same trait have an equal effect on the phenotype, the alleles are
codominant
Most human genetic characters are
controlled by one gene
The 2 strands of a DNA molecule are held together by _______________ bonds
hydrogen
Replication of DNA cannot begin until
hydrogen bonds between complementary bases are broken
When scientists generate a single informed, logical, & plausible explanation for a question & observations of the natural world, they are proposing a scientific
hypothesis
The smooth endoplasmic reticulum
is the site where lipids destined for other cellular compartments are manufactured
Which molecules are involved in protein synthesis?
messenger RNA, ribosomal RNA, and transfer RNA
The boundary that surrounds the contents of the nucleus is the
nucleus envelope
Developing a scientific understanding of a natural phenomenon typically begins by
observing a quantifiable natural phenomena
DNA replication
occurs before mitosis in the cell cycle
Cells naturally, without using energy, respond to changes in water concentration through the process of
osmosis
Living cells have an intact phospholipid bilayer that separates the cell from its external environment; this structure is commonly referred to as the
plasma membrane
The observation that individuals afflicted with albinism also always have vision problems is an example of
pleiotropy
Starch is an example of a
polysaccharide
A Punnett Square is used to
predict the outcome of a genetic cross
Damaged DNA may be repaired by a special class of
proteins
Ribosomes are very small nonmembranous organelles associated with the synthesis of
proteins
The plasma membrane white blood cells contain _______________ that bind with proteins of cells such as bacteria that have invaded the human body. These special proteins tell the white blood cells those bacterial cells do not belong to that particular human and to phagocytize (eat) them.
receptor proteins
The Golgi apparatus
sorts proteins and lipids and sends them to their final destination
Which of the following does NOT represent a phenotype?
the alleles in a mouse that control hair color
The pH scale measures
the concentration of hydrogen ions in solutions
A screen door allows breezes to enter & aromas to exit but keeps out insects. Its function most resembles
the plasma membrane
Which of the following does not occur in the nucleus?
translation
Which of the following is not a base found in DNA?
uracil
