To study the details of protein molecules on the surface of a cell, a biologist would likely use a (2 points)

1 answer:

8 0

If the answers are different lab tools, then a scientist would use a microscope to exam and study details of protein molecules most likely

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Which of the following is a disadvantage of cloning?

gtnhenbr [62]

D. Cannot repopulate the world with endangered organism

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2 years ago

Samantha believes that flowering plants produce more flowers when they are given fertilizer. She designs an experiment in which

ZanzabumX [31]

Answer:

I think she should try the experiment one set with fertilizer, and one without. The negative control group would be the set of rose bushes grown without the fertilizer, but under the exact same conditions as the experimental group. Then, if a difference is seen you can be sure it's accurate, since you tested with and without fertilizer under the same conditions. Sorry if i am wrong, I am not completly sure about this one. Again I might be wrong so sorry in advance.

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Further microscopic analysis of negatively stained specimens reveals a colorless ring around each of the spherical cells against

Tanya [424]

Answer:

b. a capsule

Explanation:

The capsule is mainly made up of polysaccharides and surrounds many bacteria. Capsule staining includes mixing of the bacterial cells with dye and spread out in a thin film on a slide. After air-drying, the cells appear as light-colored structures present in a relatively dark blue-black background. This occurs since the dye particles cannot penetrate either the cell or its capsule. Therefore, the given slide with a colorless ring around the cells in a dark background represents the presence of a capsule around the observed cells.

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The images show the stages of human development. At which stage does cell differentiation start?

Elena L [17]

Answer:

At the second stage the cell differentiation is start.

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3 years ago

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Which of the following is likely to be researched by an environmental scientist? a. the effect of oil spills on marine animals b

prisoha [69]

The correct answer is The effect of oil spills on marine animals.

Environmental scientists deals with the study of nature and the interaction of nature with other organisms. Any effect on environment caused by any means is studied by environmental scientist.The effect of oil spills is harmful on marine animals and this is known to us because it was studied by the environmental scientists. This is also apart of environmental science.

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