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dimulka [17.4K]
3 years ago
5

Ok so I got a bad grade on my science quiz (so did everyone else) she changed the definitions she gave us originally the day of

the test. So now I can redo them but I have to know the new definitions It’ll be very helpful if you can give me at least some of the answers. Thank you.

Biology
1 answer:
Studentka2010 [4]3 years ago
3 0
13. Endoplasmatic reticulum (ER)
15. You should say something about how folded membranes increase the surface of the organelles, so more ribosomes can be attached to the ER surface or more proteins can find their receptor in other membranes.
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The transfer of information in a DNA strand to a new molecule of messenger RNA is known as transcription. Thus, the process of transcription is carried out by an enzyme called RNA polymerase and a number of accessory proteins called transcription factors. However, DNA is copied into mRNA because mRNA will serve as reference book that contains information as the DNA and its sequence is complementary to the DNA template.

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3 years ago
A researcher is using a modified version of FRAP. She has devised a technique that allows her to label all the peripheral membra
asambeis [7]

Answer:

The correct answer is option B.

Explanation:

FRAP or Fluorescence Recovery After Photobleaching refers to a method of finding the kinetics of diffusion in living cells, generally with the assistance of fluorescence microscopy. The method comprises the labeling of a particular cell constituent with a fluorescent molecule, imaging that cell, photobleach a small section of the cell, then image the recovery of fluorescence with time.  

In the given question, as the fluorescence has recovered back to the bleached region. The scientist can come to the conclusion that the membrane of the cell and the peripheral membrane proteins do not always belong together.  

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4 years ago
Never mind wrong print
Diano4ka-milaya [45]
Okay thats cool. okay
7 0
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Chloroplasts and mitochondria have something in common that supports the theory of endosymbiosis. What is it?
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Answer: A) Mitochondria and chloroplasts are found in prokaryotes.

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Both mitochondria and chloroplasts contain their own DNA and ribosomes.  The first endosymbiotic event occurred: The ancestral eukaryote consumed aerobic bacteria that evolved into mitochondria. In a second endosymbiotic event, the early eukaryote consumed photosynthetic bacteria that evolved into chloroplasts.

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Unhealthy ecosystems are created by
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