Top answers

Biology
All levels

What is the difference between eukaryotic cells and prokaryotic cells?

The main difference between eukaryotes and prokaryotes is that eukaryotic cells contain membrane-bound organelles (this includes a nucleus). Eukaryotes can be a single-celled or multi-celled organisms, su...

SL
Answered by Sarah L. Biology tutor
3433 Views

Explain what phototropism is and why plants might benefit from positive phototropism.

Phototropism is a growth response to a light stimulus.Positive phototropism causes the stems of plants to grow towards a light source causing the leaves of the plant to be pointing towards the lgth source...

RS
Answered by Rachel S. Biology tutor
29748 Views

Why does the rate of an enzyme reaction not just always increase with temperature? Why does it fall after a point?

Enzymes have an area on them known as the ACTIVE SITE. This active site is shaped to fit the substrate that will bind to it -complementary fit. Eventually, the bonds in the active site of the enzymes are ...

JP
Answered by Jacob P. Biology tutor
2530 Views

How can I tell if a question is asking me about Replication, Transcription, or Translation?

In replication, the main macromolecule in use is DNA, and the most important enzymes to this process are DNA Polymerase and DNA Helicase, so if no other macromolecule is mentioned and the...

EN
Answered by Ellie N. Biology tutor
1897 Views

How does the kidney work in homeostasis?

The kidney is involved in osmoregulation (the control of blood water concentration): this is primarily controlled by the hormone ADH which is released from the pituitary gland in the brain when water conc...

MH
Answered by Molly H. Biology tutor
2994 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning