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Describe the process of saprophytic nutrition in soil microorganisms

Enzymes are secreted by the microorganisms and extracellular digestion takes place as the enzymes break down any complimentary substrate. Next, the products of this digestion are absorbed into the microorgan...
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Answered by Mark C. • Biology tutor
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Describe the bonding present in a piece of sodium metal.

A lattice of positive sodium ions with a sea of delocalised electrons distributed around them. The metallic bond consists of the electrostatic force of attracion between the positively charged sodium atoms a...
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Answered by Mark C. • Chemistry tutor
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Explain the difference between speed and velocity.

Speed is the rate of change in direction, whereas velocity is the rate of change in displacement. This means that an object's velocity has an associated direction whereas its speed doesn't.If a car travells ...
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Answered by Mark C. • Physics tutor
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How does the postal rule apply to accepting and terminating contracts?

For a contract to be valid there needs to be both offer and acceptance. Therefore, a contract cannot be enforced unless it is accepted. The postal rule states that an offer is deemed to be accepted from the ...
Answered by • Law tutor
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Why is a German or Italian augmented sixth chord NOT the same as a dominant seventh chord?

There are two key differences between dominant seventh chords and augmented sixth chords, despite the fact that they sound the same and use the same pitches: function, and spelling. A dominant seventh chord ...
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Answered by Toby H. • Music tutor
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