Top answers

Biology
All levels

Describe how B-lymphocytes respond when they are stimulated by antigens.

When B-lymphocytes are stimulated by antigens, they first divide by mitosis to form clones, some of which become plasma cells that secrete antibodies, others become memory B-cells which can be stimulated ...

Answered by Biology tutor
17551 Views

What is phagocytosis?

Phagocytosis is when a white blood cell - or "phagocyte" - engulfs a pathogen that has entered the body and has made it past the body's physical barrier defences.The phagocyte first locates the ...

Answered by Beth K. Biology tutor
2235 Views

Explain the difference between active transport and osmosis (3)

i. Osmosis involves the transport of water only whereas Active Transport involves the transport of molecules/ionsii. Osmosis involves the transport along the concentration gradient whereas Active transpor...

Answered by Vera O. Biology tutor
1730 Views

Why does the Calvin cycle require six turns to create a single hexose sugar?

Three turns of the cycle produces six molecules of triose phosphate (TP). Five of these six molecules are used to regenerate ribulose bisphosphate (RuBP). So for three turns of the Calvin cycle, only one ...

Answered by Rakhitha K. Biology tutor
8723 Views

What is the difference between the central nervous system and the peripheral nervous system

The central nervous system consists of the brain and spinal chord, whereas the peripheral nervous system consists of the spinal chord alone.

Answered by Patrick M. Biology tutor
2252 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences