Biology, 14.12.2019 09:31, aaronolivera200161
A72-year-old man is diagnosed with a 7 cm primary tumor in his colon, which has spread to the liver. which of the following features indicates that the tumor is malignant?
a. the spreading of the tumor
b. the size of the tumor
c. the patient's advanced age
d. the location of the primary tumor
Answers: 2
Biology, 21.06.2019 20:00, skylex
You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip. nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule. true/false
Answers: 1
Biology, 22.06.2019 10:00, memphissmith5779
14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca
Answers: 2
Biology, 22.06.2019 16:00, PresleyPie2700
Each nephron is made up of capillaries that form the __ sweat glands bladder glomerulus ureter
Answers: 1
A72-year-old man is diagnosed with a 7 cm primary tumor in his colon, which has spread to the liver....
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