Top answers

What are biofuels? Give names of at least two biological sources.

Biofuels are fuels made from organic biomass, i.e., plant material. Sugarcane and sugar beet are sources of biofuels.
JF
Answered by Jessica F. • Biology tutor
3761 Views

How are enzymes involved in digestion?

Enzymes are involved in chemical digestion. When nutrients are ingested there are many different sized molecules across the various food groups. Some of these molecules are already small enough to be absorbe...
EP
Answered by Ella P. • Biology tutor
5405 Views

What do you understand by gene cloning?

Gene cloning refers to a process in which a gene of interest is ligated to a vector. The recombinant DNA thus produced is introduced in a host cell by transformation. Each cell gets one DNA molecule and when...
HJ
Answered by Harkeran J. • Biology tutor
8989 Views

Molecules of a substance are able to move between cells. What are the two main processes by which this occurs? What is the main difference between these two processes?

Within cells the two main forms of cellular exchange are diffusion and osmosis. These two terms can sometimes be mixed up as they both mean "the movement of molecules of a substance from an area of high...
TD
3558 Views

What is the difference between Aerobic and Anaerobic respiration?

Respiration is the break down of molecules in living cells to release energy. Most commonly glucose (a sugar molecule) is broken down to release energy. Aerobic respiration occurs in animal cells and plant c...
FC
Answered by Freya C. • Biology tutor
37087 Views