Tutor profile: Annika N.
Subject: Natural Sciences
Fabaceae, the bean family is unable to fix nitrogen naturally. What symbiotic relationship allows them to obtain Nitrogen from the soil.
Rhizobium, small communities of soil bacteria that reside within the nodes on the legume's roots fix Nitrogen. This is then absorbed by the plant's roots.
Subject: Basic Chemistry
What is the Ph Level of blood?
The Ph scale is written from 0 to 14. 1 through 6 being acidic, and 8-14 becoming increasingly alkaline or basic. Acidic conditions are based on the number of hydrogens that are unbonded, denoted by H+, and alkaline conditions are denoted by OH. Our body's blood range from 6.9 to around 7.2 acidities. So mostly the Ph of our body's blood is around 7.
How do our bodies cells communicate?
How do we communicate? Our cells are living things very similar to us, our five senses include touch, smell, taste, sight, and hearing. Cells communicate, without sight, taste or hearing. They use Touch and Smell (Chemicals).
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