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aalyn [17]
3 years ago
8

Please Brefly describe how vaccines work and they help our immune system?

Biology
1 answer:
Jlenok [28]3 years ago
5 0

Answer:

vaccines have the smallest amount off the grid they are for in them so that you body can attack and get used that virus so that when you get it you are as bad

Explanation:

I think

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Please help me answer this
Bezzdna [24]

Answer:

answer is D!!!!!!!!!!!

Explanation:

8 0
3 years ago
Which group is an ecosystem performs photosynthesis
Lynna [10]

Answer:

autotrophs are the ones who perform photosynthesis

8 0
3 years ago
Physiological factors such as ____________ , water levels, and ph must remain within a certain ____________ for cells and organi
Monica [59]

For an organism to function properly all the physiological factors should be favorable. These physiological factors include water level, pH, temperature etc. To perform the basic function of the life, it is important to maintain the physiological parameter in a particular range.  

In case, these physiological parameters are not balanced, then the body of the organism does not perform well and causes illness.  

So, the first blank can be filled with temperature and the second blank can be filled with range.  


8 0
3 years ago
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
3 years ago
Is a material that slows or stops the flow of energy.
lesya692 [45]

Answer:B. insulator

Explanation:

7 0
2 years ago
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