SSRIs treat depression by: inhibiting the production of serotonin preventing pos
ID: 267919 • Letter: S
Question
SSRIs treat depression by:
inhibiting the production of serotonin
preventing postsynaptic neurons from releasing serotonin from the synapse
preventing pre-synaptic neurons from taking up serotonin from the synapse
releasing endorphins in the plasma membranes of the postsynaptic neurons
Multiple alleles are common because:
RNA is an informational molecule, and many sequences are possible for a particular gene.
proteins are informational molecules, and many amino acid sequences are possible.
a gene sequence can vary in different ways and still encode a functional protein
there are many humans on the planet
Familial hypercholesterolemia illustrates incomplete dominance in humans because:
heterozygotes have an intermediate number of LDL receptors on their liver cells
homozygous dominant individuals have an intermediate number of LDL receptors on their liver cells
heterozygotes have an intermediate number of LDL receptors on their kidney cells
homozygous dominant individuals have a minimal number of LDL receptors on their liver cells
Frisky is a white cat who is heterozygous for the "white masking gene" that reduces the amount of pigment in cells. As a result, she makes pigment, but it can't get into cells that color fur. The white masking gene is therefore _______ to the pigment gene.
incompletely dominant
incompletely penetrant
epistatic
pleiotropic
Of nearly 200 forms of hereditary deafness, 132 are autosomal recessive, 64 autosomal dominant, and 4 x-linked recessive. Hereditary deafness is therefore:
heterogenic
heterozygous
heterogametic
variantly expressive
In humans, chromosome 15 has a long arm and a very short arm. Therefore, the centromere location would be classified as:
telocentric
acrocentric
submetacentric
metacentric
To create a completely transgenic organism, a researcher:
injects a single gene into a somatic cell.
injects a single gene into several somatic cells.
introduces foreign DNA into somatic cells and transplants them into an embryo.
introduces foreign DNA into an egg cell.
The process by which bacteria are used to detoxify certain pollutants from an area is called:
toxin silencing.
bioremediation.
bioreclamation.
toxin remediation.
A genetic microarray has:
short pieces of RNA of known sequence attached to a small plastic/glass square.
an entire genome of DNA placed on a small plastic/glass square.
short pieces of DNA of known sequence attached to a small plastic/glass square.
amino acids attached to a small plastic/glass square.
Since Rita's breast cancer resulted from a specific mutation to the HER2 gene, she was prescribed the drug, Herceptin. This is an example of:
pharmacogenetics.
genetic pharmacology.
enzyme replacement therapy.
recombinant DNA technology.
Surgery is an effective method of treating cancer when:
a primary tumor has metastasized.
a primary tumor has yet to invade healthy tissue.
a patient has multiple tumors spreading throughout the body.
all rapidly dividing cells are targeted by the surgery.
Explanation / Answer
SSRIs treat depression by
*preventing presynaptic neurons from taking up serotonin from synapse.
Multiple alleles are common because
*a gene sequence can vary in different ways and still encode a functional protein.
Familial hypocholesterolemia illustrates incomplete dominance in humans because:
*heterozygote have an intermediate number of LDL receptors on their liver cells.
Frisky is a white cat......
*Incompletely penetrant
Of nearly 200....
*heterogenic
In humans, chromosome 15.....
*acrocentric
To create a completely .....
* introduces foreign DNA into an egg cell.
The process by which bacteria are used to...
*bioremediation
A genetic microarray ....
*short pieces of DNA of known sequence attached to a small plastic/ glass square.
Since Rita's breast cancer.....
* pharmacogenetics
Surgery is an effective....
* a primary tumor has yet to invade healthy tissue
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