Direct antigen testing differs from direct fluorescence testing in that the results
A. require specialized equipment.
B. are less accurate.
C. are more accurate.
D. require an electron microscope.
E. are read with the naked eye.
Answer: E
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Caenorhabditis elegans is an organism with exactly 959 somatic cells. This organism is a(n)
A. fruit fly. B. earthworm. C. nematode. D. angiosperm. E. fungus.
In a typical application, a DNA microarray is used to compare the ____________________
a. expression of genes in two different tissues b. alleles of each chromosome c. length of DNA fragments in yeast vectors d. changes in gene sequences within an allele through generations of a single family e. protein products produced when using different DNA sequencing techniques
Which of the following regarding bone growth is false?
A. Cartilage of growth plates actively grow in lengthwise direction. B. Increase in bone thickness results from the adding of bone layers on top of the periosteum. C. Some cartilage remains after it is replaced by bone. D. Cartilage calcification encroaches on the cartilaginous growth plate.
In an active state of a G protein
a. the ? subunit binds to a target protein and the ?? subunit remains bound to the receptor. b. the ? and ?? subunits both can bind to target proteins. c. the ?? and ? subunits both can bind to target proteins. d. the ? subunit can bind to a target protein and the ?? subunit remains bound to the receptor.