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mezya [45]
3 years ago
8

Stromatolites (pictured here) are rocky structures that generally form in shallow waters from the binding of sediment by bacteri

al microbial biofilms. Stromatolites are typically hypothesized to be formed from the presence of cells that bind these grains together. If the cells that formed the stromatolites were fossilized with these rocks, an analysis of these cells would likely include which structures? A) DNA, nucleus, and ribosomes
B) Mitochondria, DNA, and ribosomes
C) Plasma membrane, nucleus, and DNA
D) Plasma membrane, DNA, and ribosomes
Biology
2 answers:
EastWind [94]3 years ago
8 0

Answer:

d

Explanation:

lidiya [134]3 years ago
5 0

Answer:

D

Explanation:

Mitochondria & nucleuses are not present in bacteria.

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What happens when telomeres on the end of chromosomes become reduced in length
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When the telomere becomes too short, the chromosome reaches a 'critical length' and can no longer be replicated.
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How might an RNA-based genome result in an increased infection rate? What are some potential complications to this infection str
WITCHER [35]

Answer:

I think the question is "How might an RNA-based genome results display an increased in infection rate?" because current statement doesn't convey a message clearly.

Explanation:

To answer this question, we need to understand first that what is gene expression. Gene expression is a process in which genetic information is transcribed first to RNA and then into proteins. During transcription stage, only active genes would be transcribed to RNA and all other DNA material don't transcribe at all. Now, if there is an infection, host cell would express only those genes which would actively take part in the defense mechanism, e.g. R-genes, genes involved in production of reactive oxygen species, etc. Hence, to monitor the infection rate, we will look at the RNA-based genome. To do this, we will extract the total RNA and then would sequence it. Then we will annotate the genes and check the relative abundance (differential expression). Finally, we would have a clear that these genes were active against the infection. By doing temporal sampling and sequencing, we would be able to measure the rate as well.

For the second part, potential complications that could arise in doing analysis is the lower amount of RNA, or rapid degradation of RNA in case of presence of RNAses. RNA can be degraded easily at room temperature.

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3 years ago
The best method to improve air quality is to
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Change you AC filter, don't forget about other AC filters, check you air ducts, use cooking vents, keep your rug and carpets clean, control humidity in your home, and buy indoor plants to refreshen the air.

5 0
4 years ago
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A 3-column table has 4 rows. The first column is labeled Student with entries Zack, Nicole, Christian, Abigail. The second colum
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Answer:

Nicole

Explanation:

Sample Response: The mystery food sample did test positive for Sudan red. Nicole ate salad dressing, which contains fat, a lipid. She is the likely culprit.

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The mystery food sample tested positive for lipids using the Sudan red indicator.

Nicole ate salad dressing.

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Nicole is probably guilty.

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3 years ago
Which state was the pioneer to start fighting air pollution?
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California

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