Top answers

Describe how water moves from the soil into a root hair cell

Higher concentration of water outside the cell/lower concentration of solutes outside. Water moves into the cell, down a concentration gradient and through a selectively permeable membrane via osmosis
JT
Answered by Jess T. • Biology tutor
6080 Views

How would you prove that a substance contains magnesium ions?

Add sodium hydroxide solution to the substance and if a white precipitate is observed that does not dissolve in excess sodium hydroxide then there are magnesium ions in the substance.
RC
Answered by Rachel C. • Chemistry tutor
5598 Views

Why does silver have a high melting point?

Silver contains strong metallic bonds (a lattice of positive ions surrounded by a sea of delocalised electrons) which require large amounts of energy to break, therefore has a high melting point.
RC
Answered by Rachel C. • Chemistry tutor
8557 Views

In a class there are 57 students. Of these 32 study Spanish, 40 study German and 12 students study neither. How many students study Spanish but not German?

The best approach to this problem is using a Venn Diagram. The first step to solving this problem is calculating the number of students who study Spanish or German or both. In the question we are given the i...
CD
Answered by Calum D. • Maths tutor
4889 Views

What is the difference between mitosis and meiosis?

Simply enough, Mitosis creates two cells that have the same number of chromosomes and identical chromosomes to the original cell and Meiosis creates 4 cells that have half the amount of chromosomes that are ...
BF
Answered by Benjamin F. • Biology tutor
4033 Views