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likoan [24]
3 years ago
5

To test for the presence of starch, iodine can be used. A positive reaction results in a black color. A dialysis bag filled with

starch solution and secured on both ends is placed in iodine solution. After 30 minutes the dialysis bag appears black. Based on this information, what most accurately describes what happened?
Biology
1 answer:
Bezzdna [24]3 years ago
5 0

Answer:

Diffusion.

Explanation:

According to the information given before the example in the question and considering the fact that the bag was secured on both ends before being placed in the solution, provided that there were no holes on the surface of the bag, the iodine solution could have diffused through the bag into the starch solution hence the color change to black after 30 minutes.

I hope this answer helps.

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Which statement about bacteria is TRUE?a. All bacteria are multicellular organisms. b. Bacteria do not use the same genetic code as organisms in other domains. c. Bacteria are in a domain of their own. d. Archaea belong to the same domain

The answer to the question is Option C (Bacteria are in a domain of their own)

Explanation:

There are eight distinct taxonomic categories:

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The three domains are the Archaea, the Bacteria, and the Eukarya.

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Hope this helps!

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