Biology, 10.03.2020 07:28 caseyfriemoth1548
For a particular species of snap beans, the mean germination period has been 17 days. A new species of snap beans has been developed. An agriculture analyst wants to determine if the new species has a shorter germination period, on average. From a random sample of 10 snap beans of the new species, data appear to be approximately unimodal and symmetric with an average germination period of 16.0 days. (a) What are the null and alternative hypotheses? H0: x = 17 vs. Ha: x < 17 H0: x = 16.0 vs. Ha: x < 16.0 H0: μ = 16.0 vs. Ha: μ < 16.0 H0: μ = 17 vs. Ha: μ < 17 (b) What is the sample statistic?
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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, 21.06.2019 22:00
This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic
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Biology, 22.06.2019 00:00
Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels
Answers: 3
Biology, 22.06.2019 02:00
What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream
Answers: 1
For a particular species of snap beans, the mean germination period has been 17 days. A new species...
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