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Pachacha [2.7K]
3 years ago
13

2. The best way to determine if you are using a halogenated solvent is to:

Biology
1 answer:
goldfiish [28.3K]3 years ago
8 0
The best way to determine the presence of halogens is by adding a silver nitrate solution to the solvent. This is because all halogens, except for fluorine, produce a precipitate with silver nitrate solution.Chlorine produces a white precipitate, bromine produces a pale cream colored precipitate and iodine produces a yellow colored precipitate.
If further testing is required, concentrated sulfuric acid may be added. The sulfuric acid will produce misty fumes with fluorine and chlorine, brown fumes with bromine and purple fumes with iodine.

hope this helped :)
alisa202
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only on the DNA, which populations do you think live in closer proximity to each other? What do you ...
DIA [1.3K]

Answer:

Based only on the DNA, which populations do you think live in closer proximity to each other?  What do you expect to see when comparing genes of lions that live closer together?

Explanation:

period

4 0
3 years ago
Which of these is ATP?
Pepsi [2]

Answer:

The correct answer is <em>A molecule consisting of three phosphate groups, ribose, and adenine.</em>

Explanation:

ATP means adenosine triphosphate, and it is a molecule which has a very important role in energy transfer in the cells.  As its name says, it is composed by:

- adenine: a purine base, which is also a component of nucleic acids.

- ribose: a 5-carbon sugar (in contrast to deoxyribose, ribose has a -OH group in place of a -H group in carbon 2)

- three phosphate groups

Notice that adenine bonded to the ribose is called adenosine.

4 0
3 years ago
I need help with my homework that is due tomorrow and I can not find the answers in the book or online.
scoray [572]

Animal regeneration can produce whole organism or parts of organism and repair injury.

Clones today are done at genetic level by using molecular biology techniques as compared to old days when only nucleus would be removed from the egg cell and desired nucleus is inserted for cloning.

Explanation:

Regeneration is a process in which whole organism or part of which is produced from pre existing cells or group of cells and tissue. Regeneration helps in maintaining the integrity of morphology and physiology.

In lower animals like hydra and planaria whole organism is generated by existing parts. This process is termed as totipotency.

In higher animals however injury repair by mitosis is an example of regeneration.

Plant structure involved in vegetative propagation are: bulbs, rhizomes and tubers.

Vegetative propagation can be done by grafting, cutting, bulb formation, tuber, layering and tissue culture methods.

Cloning is a process in which a genetical or identical copy of an organism or the cell is made by molecular biology techniques. The use of DNA sequences, molecular scissors, stem cells and plasmid are the latest techniques of cloning.

Cloning is used for treating serious diseases as diabetes and heart injury.

In old days one cell would have its nucleus removed and placed into the egg and eventually organism produced

Advantages of tissue culture:

From a single explants, large number of plants can be made.

Obtaining plants of desired trait from tissue culture is easy in short span.

No seeds are required for the growing of new plants.

5 0
2 years ago
Identify the limitations of the carbon model(s) in accounting for all of<br> Earth's carbon.
Mariana [72]

The carbon model is the flow and the movement of the carbon and its compound in the atmosphere. Climate change is the limitation of the carbon model.

<h3>What is climate change?</h3>

A climate change is a variation in the weather and the climate pattern due to a change in temperature and other atmospheric factors. It will lead to a transformation in the flow of carbon in the environment.

Increased carbon in surroundings increases temperature and results in a change in seasons and humidity levels, leading to changes in the rainfall.

Therefore, climate change is the limitation of the carbon model.

Learn more about the carbon cycle here:

brainly.com/question/21984131

#SPJ1

4 0
2 years ago
In fruit flies, red eyes (R) are dominant to white eyes (r).
inna [77]
r r
_ _
R|Rr Rr|
R|Rr Rr|
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