Top answers

What properties does water possess that make it an essential molecule for life?

· Solvent – Good for polar substances (salts, sugars, simple alcohols) · Heat Capacity – Energy to raise 1kg water by 1 o K. Keeps blood temperature stable · Heat of Vaporisation – Good for sweat, absorbs a ...
CB
Answered by Connor B. • Biology tutor
5140 Views

What is the function of muscle cells found in the stomach wall

Muscle cells are present in the stomach wall so that they can contract and move the food. This aids digestion and the action of enzymes
HJ
Answered by Helen J. • Biology tutor
52921 Views

For rectangles of area 100 m^2 what is the perimeter of the rectangle with the smallest perimeter?

100=ab P=2a+2b P=2a+200/a dP/da=2-200/a^2 dP/da=0 implies 2=200/a^2 a^2=100 a=-10,10 a is a length so take positive a, a=10 so b=10 gives perimeter 40m Notice a=10 b=10 is a square Squares are rectangles of ...
DN
Answered by Daniel N. • Maths tutor
11956 Views

What is active transport?

The movement of molecules from an area of high concentration to low concentration across a membrane using energy.
JW
Answered by Jessica W. • Biology tutor
3605 Views

How should I structure my paragraphs?

I strongly advise students to follow the PEEL approach.First you write your point, in a relatively short, focused and simple sentence. You proceed to offer the quote from the text that your point relates to....
XK
4976 Views