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marin [14]
3 years ago
11

on a scale of 1-10, how challenging do you find online learning? What’s going well? What are some of the challenges? What resour

ces would make a difference?
Biology
2 answers:
DanielleElmas [232]3 years ago
5 0
I would say I find online learning challenging at six from a scale of 1 to 10. I think wood is going well as my ability to be independent in my learning. I think the most challenging thing is not being able to interact with my peers and it being hard to ask questions through a screen.
Bezzdna [24]3 years ago
4 0
I believe that online learning is challenging and on a scale it 7/10
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Question 2
zhannawk [14.2K]
The answer is ionic
7 0
3 years ago
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A pond near a city park is found to be contaminated with both bacteria and excess nitrogen. The bacteria most likely came from _
kiruha [24]
<span>Excess nitrogen is brought in the pond from the fertilizer, which are ladden in nitrogen and phosphorous, and rain water or running water takes that nitrogen to the water bodies.Bacteria must have come from the sewage disposal in the pond. Sewage is rich in organic material and allows proliferation of bacteria, which is taken to the pond when the sewage is disposed in the pond.</span><span />
6 0
3 years ago
What are mechanisms of action of Triclosan and Povidone?
NNADVOKAT [17]

Answer:

Povidone: its action is produced by oxidation and inactivation of cellular components.

Triclosan:  is absorbed by intact skin which determines its persistence and its speed of action is intermediate.

Explanation:

Povidona:

- It presents the same mechanism of action and spectrum of iodine.

- It is a water-soluble compound that results from the combination of iodine and polyvinylpyrrolidone, which improves the solubility of iodine and allows its gradual release into tissues. This effect determines less skin irritation and greater product availability over time.

- The term "available iodine" refers to the amount of iodine available as a reservoir and that of free iodine to the percentage in solution in working condition, that is, a 10% povidone iodine solution, contains 1% of available iodine and the iodine concentration Free is 1 to 2 parts of a million that remains until the available iodine is depleted. This product advantage is lost when diluted in water, since in these circumstances it behaves as an aqueous solution of iodine.

- Its activity can be diminished by the presence of blood or other organic matter.

- The concentrations commonly used as a surgical scrubber are 7.5% and 8% and in the one used for cures it is 10%.

- In relation to tincture of iodine or lugol, it presents less dermal irritation. They should be used with caution in newborns and burned

- Its antiseptic action is classified between high level and intermediate level. They are lethal in minutes for bacteria, fungi, viruses, protozoa, amoeba cysts and spores. However, in front of dry spores it requires a longer exposure time (hours).

- Iodized antiseptics have the advantage of being cheap.

Triclosan:

- It is a relatively new phenolic derivative that acts causing damage to the cell wall of microorganisms. It is broad-spectrum bacterial, better for Gram + and there is little information about its activity in viruses.

- <em>It is absorbed by intact skin which determines its persistence and its speed of action is intermediate. </em>

- No allergenic or mutagenic effect has been demonstrated in short periods of use.

- Its activity is minimally affected by organic matter.

- The concentrations of usual use are between 0.3% and 2%.

- It is mainly indicated for clinical handwashing where it is used in 1% breads and in 0.5% liquid preparations.

4 0
3 years ago
How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl?​
zhuklara [117]

Answer:

7.5mL

Explanation:

3 0
3 years ago
Which structure or organelle is found in both prokaryotic and eukaryotic cells? A) ribosomes B) chloroplasts C) mitochondria D)
rjkz [21]

Answer:

The correct answer would be A) ribosomes.

A ribosome is a vesicular structure present in both prokaryotic and eukaryotic cells. They consist of ribosomal RNA and associated proteins.

They are the site of translation in both prokaryotic and eukaryotic cells.

They are made up two units which are called large sub-unit and small sub-unit.

In prokaryotic cells, 70S ribosomes are present which are made up of 50S large sub-units and 30S small sub-units.

In eukaryotic cells, 80S ribosomes are present which are made up of 60S large sub-units and 40S small sun-units.

8 0
4 years ago
Read 2 more answers
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