Quiz 10, 13, 17 (Final) – Flashcards
Unlock all answers in this set
Unlock answersquestion
One group of protozoans which are non-motile, produce spores, and have a disease-causing species is the
answer
sporozoans
question
Penicillin is an antibiotic drug that interferes with cell wall synthesis in bacteria, eventually resulting in cell death. What effect would you predict if you applied penicillin to archaea?
answer
The archaea would not be affected, since they do not contain peptidoglycan.
question
Why don't new biological macromolecules form abiotically from nonliving matter on earth today?
answer
The special environmental conditions that are required do not exist
question
A man with blood type A and a woman with blood type B can have a baby with blood type O blood
answer
True, because A and B are the dominant blood types and both individuals could carry a type O allele.
question
A genetic profile includes
answer
an individuals complete genotype, including mutations
question
Alleles are
answer
alternate versions of the same trait
question
Algae are commonly grouped by their type of
answer
pigment
question
Which is not true according to Mendels law and meiosis?
answer
One factor must be dominant and one factor recessive in each individual
question
A missing piece of chromosome 5 may result in a child whose glottis and larynx do not develop properly resulting in an abnormal cry. This is called
answer
Cri du chat syndrome
question
Mutations are uncommon because
answer
DNA repair enzymes often repair errors
question
A person with familial hyperchlosterolemia is participating in an ex-vivo gene therapy trial. The procedure involves
answer
removing a pieces of the persons liver, infecting it with a retrovirus containing the normal cholesterol receptor gene, and replacing it after treatment.
question
Chromosome 7 may lose an end piece resulting in Williams Syndrome, this is an example of
answer
deletion
question
The genetic material of a bacterium can include
answer
a circular chromosome, plasmids, and latent bacteriophage DNA.
question
Which of the following is not a similarity that protozoans have to animals?
answer
protozoans are able the photosynthesize
question
As a result of drinking contaminated water, a patient contracts amoebic dysentery. Would an antibiotic drug that inhibits peptidoglycan synthesis be beneficial in treating the amoeba infection?
answer
No, because amoeba are not bacteria and do not have peptidoglycan.
question
A chain of spherical bacterial cells is called a
answer
streptococcus
question
Some species of pathogenic bacteria are able to attack specific tissues in the human body because
answer
adhesion factors
question
In which type of enviornment would you most be likely to find methanogenic archaea?
answer
anaerobic
question
A male is always homozygous for a trait that is
answer
X linked
question
Ex vivo gene therapy differs from in vivo gene therapy in that
answer
in vivo gene therapy involves directly introducing the gene into the body.
question
If the parental genotype is EeWw what are the potential allele combinations that could occur
answer
EW, Ew, eW, and ew
question
If a true-breeding tall pea plant is crossed with a tall pea plant from an unknown parentage which of the following is correct
answer
some short individuals may appear in the f2 generation
question
Which of the following is incorrectly matched
answer
identical alleles - homologous
question
Which of the following is an example of the phenotype
answer
freckles
question
Down syndrome could not be treated by gene therapy because
answer
down syndrome is caused by possessing extra copies of genes of an entire chromosome and adding more genes would not help
question
The filled-in squares of a Punnett square represents
answer
all possible combinations of gametes based on the cross between the two parents
question
What does true breeding mean?
answer
The organism is self-pollinated
question
What evidence supports the idea that archaea are more closely related to eukaryotes rather than bacteria?
answer
Archaea and eukaryotes initiate transcription in the same fashion, share some ribosomal proteins, and have similar types of tRNA
question
What evidence helps support the endosymbiosis theory?
answer
a double membrane surrounding the mitochondria and chloroplast
question
A researcher infects a bacterium with a bacteriophage and notices that the infection does not immediately bring about the destruction of the host cell. Instead, the phage genetic material is copied whenever the host reproduces. Which viral replication cycle is described here?
answer
lysogenic cycle
question
During meiosis, each pair of alleles on the homologous chromosomes sorts independently from all other pairs of alleles. This statement corresponds to
answer
the law of independent assortment
question
What are the current known methods of delivering genes to cells for gene therapy?
answer
viruses, liposomes, and nasal sprays
question
A man carrying a translocation may appear normal, but runs the risk of having children with a syndrome because his children
answer
may inherit one abnormal chromosome with one normal one from the father and would carry a deletion or duplication.
question
Support for the endosymbiotic hypothesis is provided by all of the following EXCEPT
answer
mitochondria and chloroplasts contribute to different metabolic processes in the eukaryotic cell.
question
Which one of the following diseases or disorders has not been treated using gene therapy methods?
answer
cri du chat syndrome
question
Archaea
answer
have plasma membranes and most have cell walls.
question
The garden pea was a good model for Mendel's genetics experiments. Which of the following is NOT true regarding this model organism?
answer
There was only one variety of pea available to Mendel.
question
Chromosomes for karyotyping are often obtained from a blood sample. Red blood cells, however, cannot be used for this purpose because
answer
they lack nuclei.
question
Morgan buys a male python from a snake dealer who tells him that the snake carries the albino allele. What is the most effective way for Morgan verify this statement?
answer
Breed the snake with a homozygous recessive albino female
question
Citrus tristeza virus (CTV) damages and kills susceptible citrus trees around the world. It can by spread by grafting of infected plants; and by aphids, insects with piercing mouthparts that they use to suck fluid from plants. Which of the following would not limit the spread of CTV?
answer
application of antibiotic drugs to citrus plants
question
Which variable will determine the coat color in Himalayan rabbits?
answer
both the genetics and environment will determine the coat color
question
Viroids and prions are alike in that both are infectious
answer
molecules
question
Colchicine is a drug that blocks formation of the mitotic spindle apparatus. What would you expect if you applied colchicine to a petri dish of bacteria?
answer
the bacteria would continue to divide, because they carry out binary fission, which does not require a spindle apparatus
question
A silent mutation is more likely to occur as a result of
answer
a point mutation that does not change the amino acid encoded within the gene.
