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Gnom [1K]
2 years ago
8

Name the enzyme that breaks down H2O2.

Biology
1 answer:
disa [49]2 years ago
6 0

Answer:

catalase

Explanation:

To protect itself, the body makes catalase, the enzyme that decomposes hydrogen peroxide before it can form hydroxyl radicals.

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Identy three advantages and three disadvantages of bioplastics
swat32

Explanation:

<em><u>Advantages of bioplastics</u></em>

1.Less oil is used to produce petrochemical (oil-based) plastics which pose a great risk to the environment.

2.The common bioplastics can be injection molded and shaped to take the same form as traditional thermoplastics. In some cases, the bioplastics are stronger and lighter, too, so they are not necessarily only suitable for very niche applications.

3.Bioplastics are more marketable, for example, their usage may improve the value-add of a product through a green marketing campaign. After all, studies have shown that ‘80% of European customers want to buy products with a minimal impact on the environment,’ so bioplastics may represent a useful argument for brands.

<em><u>Disadvantages of bioplastics</u></em>

1.First, bioplastics are generally NOT cost-competitive compared to their oil-based counterparts. They are generally two or three times more expensive than the major conventional plastics such as PE or PET, and their production is plagued by low yields and being expensive. This disadvantage should be less acute when manufacturing plants become larger and benefit from economies of scale. A good example is Braskem’s 200,000-tonne bio polyethylene plant (equivalent to about 20% of the world’s current bioplastics production).

2.There is a concern that bioplastics based on terrestrial crops could harm food supplies; however, new innovations using food waste could be helpful in this regard and the concerns would seem to be unfounded as: ‘Perhaps 300,000 hectares are used to grow the crops which the industry processes into plastics. For comparison, this is about 0.02% of the world’s total naturally irrigated area available for cultivation. Even if half the world’s plastics were made from crops grown on food land, the industry would only require 3% of the world’s cultivated acreage.’

3.Crop-based bioplastics require fertile land, water, fertilizers, and are reliant on weather conditions. This means that the supply of raw materials for bioplastics are at risk of natural phenomena, such as drought.

6 0
3 years ago
Read 2 more answers
thinking about how gene expression affect cellular differentiation , explain why a rabbit looks so much different as an adult co
Kaylis [27]

Ans.

Cell differentiation is defined as a process, by which less specialized cells, such as embryonic cells become more specialized. The process of cell differentiation is regulated by gene expression. Gene expression involves a specific group of genes that are turned on (expressed) or turn off (repressed) and dictates a cell's function.

A fertilized egg represents a single, non-specialized cell that develops into a complex, multicellular organism by cell differentiation. Thus, a adult rabbit looks so much different as compared to a single fertilized cell or zygote, due to cell differentiation, which is regulated by gene expression.

7 0
3 years ago
Cheri has an overactive thyroid gland that sometimes causes her to have angry outbursts when she doesn't take her medication as
Strike441 [17]
A therapist seeing Cheri would attribute her anger to biological factors.
Her angry outbursts happen because of a malfunction in her body. Because her thyroid gland is overactive, this leads to her being angry from time to time if she doesn't take her medicine. Thus, these can only be biological factors, not social or psychological. 
5 0
3 years ago
What role do photosynthesis and respiration play in the distribution of gases in seawater?
nydimaria [60]

Answer and explanation;

-The most important life processes in the oceans or sea water are photosynthesis and respiration. Photosynthesis by plants and  other lower organisms uses sunlight to convert CO2 and H2O to a carbohydrate compound; O2 is a by-product of that reaction. Respiration is the process that all organisms use to recover the chemical energy stored in organic compounds. O2 is used to oxidize organic matter and release chemical energy; CO2 and H2O are by-products.

-The rates of photosynthesis and respiration are nearly balanced.all of the organic matter produced by photosynthetic algae is respired by consumer and decomposing organisms.

5 0
3 years ago
All other things being equal, which skin tone(darker or lighter) would you expect to be
FromTheMoon [43]
Folate would drive skin adopting a darker skin tone.
Darker pigmented skin tone. folate will be destroyed and they will not be successful reproducers.
4 0
1 year ago
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