Top answers

What is the role of DNA?

To provide all the necessary information needed for cell survival and also pass down crucial information to its daughter cells (either through meiosis or mitosis).
VK
Answered by Vasiliki K. • Biology tutor
3758 Views

Explain how during the light independent reaction of photosynthesis carbon dioxide is converted to organic substances.

Questions involving processes in respiration and photosynthesis usually give high marks in the Biology A level AQA unit 4 papers. By understanding and learning key parts of the processes, you can ensure your...
NC
Answered by Natalie C. • Biology tutor
13046 Views

Use band theory to explain the changes in the resistance of an intrinsic semiconductor as temper changes.

At low temperatures(0K), the conduction band is empty while the valence band if filled. As temperature increases, the electrons gain energy to go into the conduction band and leave positive holes in the vale...
KG
Answered by Kutlwano G. • Physics tutor
16352 Views

Why do ionisation energies typically increase upon going across a period yet decrease upon going down a group?

‘Ionisation energy’ is the term used to describe the amount of energy it takes to remove an electron from an atom to form a positively charged ion. It is usually represented by the unit kJ/mol, meaning it de...
LM
Answered by Lewis M. • Chemistry tutor
3152 Views

How am I to approach an unseen poem?

*** Firstly, you need to read the poem to discover its subject matter (for example, a love poem). Whilst doing this, it’s also important to consider the perspective of the speaker in the poem in regards to t...
TB
4774 Views