A scientist fused a mouse cell and a human cell, then treated the cell with specific antibodies
covalently linked to fluorescent dyes (antibodies to mouse proteins--green; antibodies to human
proteins--red). What does the cell look like immediately after fusion?
a. The cell is half red and half green.
b. The red and green fluorescent labels are uniformly distributed across the entire membrane.
c. The red and green labels are distributed in intermingled patches.
d. The red and green labels flash intermittently.
e. The red and green labels are distributed in a swirling pattern
A
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In which condition must the eye often be removed to prevent the spread of the disease?
a. conjunctivitis b. malignant melanoma c. retinoblastoma d. macular degeneration e. herpes infection
To create a DNA profile from scarce quantities of DNA, such as a fossil or a single hair, the ____________________
technique is necessary to obtain enough DNA for analysis. Fill in the blank(s) with the appropriate word(s).
Biochemical testing used for identification of pathogens involves each of the following, except
A). inoculation of additional media, incubation, and observation for a color change. B.) quick tests that take just a few seconds. C.) examining organisms through the microscope.
The dark spot seen in the nucleus in non-dividing cells where RNA for ribosomes is made is called the _________.
a) cristae b) nucleolus c) plastids d) cytosol