Biology, 20.09.2020 01:01 skater2699
Early scientists believed the earth was around 6,000 years old. What do scientists currently believe?
Answers: 3
Biology, 21.06.2019 17:30
What claim did thorne make? what evidence supported his claim?
Answers: 3
Biology, 21.06.2019 20:00
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 03:30
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Early scientists believed the earth was around 6,000 years old. What do scientists
currently believ...
Mathematics, 31.01.2020 20:51
Geography, 31.01.2020 20:51
Mathematics, 31.01.2020 20:51
Mathematics, 31.01.2020 20:51
English, 31.01.2020 20:51
Chemistry, 31.01.2020 20:51
Mathematics, 31.01.2020 20:51
Mathematics, 31.01.2020 20:51
Mathematics, 31.01.2020 20:51
Computers and Technology, 31.01.2020 20:51
Mathematics, 31.01.2020 20:51
Health, 31.01.2020 20:51