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gregori [183]
2 years ago
15

Question 14 plz help due in 2 min will mark brainlest

Biology
1 answer:
klasskru [66]2 years ago
3 0

Answer:

the frequency of the wave is 2 hertz

Explanation:

Frequency is defined as the number of cycle of waves that occur in one second.

Here the total number of cycle is equal to 10

The total time in which these 10 cycles occur is equal to 5 seconds

Now, mathematically frequency is equal to

where  is equal to number of cycles

and t is time

Putting the given values in above equation we get -

hertzs

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Identify two examples of environmental factors that may impact salivary peroxidase activity. Describe how each of the environmen
charle [14.2K]

Answer:

Examples of environmental factors that may alter salivary peroxidase include periodontitis, oral hygiene, presence of heavy metal ions, bacteria (e.g., <em>Streptococcus gordonii</em>), anaerobic conditions, temperature, pH, etc.

Explanation:

Peroxidase is an enzyme found in all aerobic cells that act to convert toxic hydrogen peroxide (H2O2) into dioxygen (O2) and water (H2O). This enzyme plays an important non-specific defensive role against proliferating micro-organisms that cause periodontal diseases such as periodontitis, which is a serious inflammatory disease affecting the tissues around the teeth. The most common environmental factors influencing the development of periodontitis include oral hygiene, smoking and age. In this regard, it has recently been shown that there is a positive correlation between salivary peroxidase activity and periodontal health, especially in non-smoker individuals. In consequence, it is expected that smoker individuals are more prone to suffer periodontal diseases by reduction of the salivary peroxidase levels.

7 0
2 years ago
If a person adds benzidene to cells grown in a test tube. Within minutes, she see’s the cells energy level fall and the metaboli
mart [117]

Answer:

B. Mitochondria

Explanation:

  • Mitochondria are known as the power house of the cell. They are the sites of cellular respiration that breaks down glucose into energy molecules such as ATP and energy storage molecules such as NADH and FADH2.
  • In this scenario, since the cell's energy levels fall and metabolism ceases, the organelle most likely affected is the mitochondria.
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2 years ago
Research how to compost material, which materials are biodegradable, and which are not. A good place to start your research is t
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Composting is a technique that allows biodegradable materials of urban, domestic and industrial origin to be degraded to form humus, a type of soil that is very fertile and extremely rich in micronutrients.

These biodegradable materials are materials of organic origin, such as food scraps, fruit peels, pieces of vegetables, among others. As the domestic environment generates a large amount of organic waste, composting in this environment is very favorable, and it can generate a very rich soil to be used in the garden, in vegetables, among other places.

Composting occurs when organic waste is stored for a certain period of time. At that time, decomposing fungi and bacteria degrade all organic matter forming the humus. It is necessary that during the time of storage of this garbage, it must be stirred in a certain period of time, to avoid the overheating of the organic matter, causing fires.

Composting can be either vermicomposting or dry composting. In vermicompostings, earthworms are added to the stored garbage, which help fungi and bacteria in the decomposition of this garbage, making the process faster. In dry composting, on the other hand, microorganisms work without any help.

It is important to note that only organic materials can be used in this process, because bacterial and earthworm fungi do not use substances present in non-organism material in their metabolism, and these materials cannot degrade.

As advantages of composting, we can say that it reduces the amount of waste, does not cause the release of methane into the atmosphere (it only releases carbon dioxide, water and biomass) and allows the created humus to be added to the soil, reducing erosion and improving aeration from soil.

As disadvantages we can say that because it is a material that is decomposing, composting can attract flies and other insects and animals that can pass diseases or cause discomfort to people. In addition, it is necessary for someone to be aware of the temperature and humidity of the compost, to avoid fires and other problems.

To start composting in your home, you must first separate organic and non-organic waste. In addition, you will have to buy a compost bin to store the garbage correctly and research a lot about it, to learn the safety methods that should be used and the stages of decomposition of this material.

6 0
3 years ago
Which is the site of the light dependent reaction‘s of photosynthesis
IrinaK [193]

Answer:

The thylakoid membrane

Explanation:

4 0
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What happens when the density of a medium increases? A. Bending of light increases B. Bending of light decreases C. Temperature
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<span>B. Bending of light decreases
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7 0
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