Individuals medically diagnosed with "dry eyes" experience feelings of dryness, itchiness, burning, and general irritation in their eyes. Dry eyes can be caused by a decreased production of tears by the tear-producing glands in the eyes. What treatment would help alleviate dry eyes?
A) stimulating production of aqueous humor
B) blocking the eyelid openings used to drain tears
C) stimulating production of vitreous humor
Answer: B
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Insertion of two bases into the coding region of a gene just after the start codon of a gene will result in
a ____ mutation.
a. missense b. chromosomal c. frameshift d. silent e. nonsense
Various forms that a single gene can take at a given locus are called
a. kinetochores. b. alleles. c. autosomes. d. loci. e. chromatids.
Which of the following is not a good feature of a plasmid vector?
a. multiple cloning site b. telomeres c. antibiotic resistance gene d. origin of replication e. blue/white selection system
Which of the following DO NOT belong to the Cell Theory?
a. All cells have a nucleus b. Cells come from pre-existing cells c. all living things are made of cells d. The cell is the basic unit of life e. all are correct