Top answers

Define the term "stem cell".

A stem cell is an undifferentiated cell, that has the potential to become a specialised cell.
TP
Answered by Tanisha P. • Biology tutor
3019 Views

How do the properties of water explain its vitality in living organisms?

First, let's talk about the components of water. Water molecules are made of two hydrogen and one oxygen atom bonded together covalently, like many other molecules. However, water is extremely special becaus...
AS
Answered by Adedayo S. • Biology tutor
8444 Views

What are the different ways in which substances can move across cell membranes?

Passive transport Diffusion = occurs in gases or aqueous solutions whereby particles are free to move and spread from a higher concentration to a lower concentration. An example is air freshener being spraye...
AR
Answered by Alisha R. • Biology tutor
7743 Views

How does energy move through a food chain?

In most food chains, all of the energy which is used originally comes from the sun. Plants are "photoautotrophs", which means that they can use light energy from the sun to fuel their life processe...
DM
Answered by Daniel M. • Biology tutor
36152 Views

1 a) Please label the following diagram of the respiratory system. b) Describe the role of the diaphragm in the mechanism of breathing.

1 a) Trachea, bronchi, bronchioles, alveoli,diaphragm b) It is a muscle important in the function of respiration On inhalation, the diaphragm CONTRACTS and FLATTENS. Air is drawn INTO the lungs (INCREASE in ...
LB
Answered by Lauraa B. • Biology tutor
5927 Views