Biology, 06.07.2019 21:30 Mypasswordishotdog11
Is an example of a technique that determines the absolute age of an object or an event. a. fossil matching b. uniformitarianism c. radiocarbon dating d. the law of superposition
Answers: 1
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, 21.06.2019 22:00, AshantiLiz990
Explain why phospholipid molecules form a bilayer. (3 marks)
Answers: 1
Biology, 22.06.2019 05:30, angelesramos112
One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing
Answers: 3
Is an example of a technique that determines the absolute age of an object or an event. a. fossil ma...
English, 23.03.2021 02:20
Geography, 23.03.2021 02:20
Mathematics, 23.03.2021 02:20