Biology, 21.01.2020 18:31, darkstorm2277
Here on earth, a year consists of 365 days. the actual definition of a year is the time it takes our planet to complete a single orbit around the sun. so for other planets, the length of a year varies. if a year on venus is 224.7 days and a year on jupiter is 4,332.59 days. what would be a reasonable estimate for a year on mars?
question 10 options:
220 days
350 days
687 days
4500 days
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 12:40, sheilashair
Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.
Answers: 1
Biology, 23.06.2019 01:30, blueval3tine
Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. a parakeet that is heterozygous for blue feathers (dominant) is crossed with a parakeet that is homozygous for white feathers (recessive). according to the punnett square for this cross, what percentage of offspring is predicted to have blue feathers? 25 percent 50 percent 75 percent 100 percent
Answers: 3
Here on earth, a year consists of 365 days. the actual definition of a year is the time it takes our...
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