Top answers

How do plant stomata open and close?

Stomata can be thought of as gates. This is why the size of the guard cells is so important. How the guard cells change in size is a simple matter of how much fluid they can hold - their turgor. Osmosis is t...
SM
Answered by Sarah M. • Biology tutor
51563 Views

Describe how antibiotic resistance occurs.

Firstly, antibiotic resistance has to be gained by a bacterium through the mutation of a gene. This can occur due to, for example, the overuse of antibiotics or failure to complete a full course of antibioti...
AH
Answered by Anita H. • Biology tutor
19290 Views

What are the differences between facilitated diffusion and active transport?

Facilitated diffusion doesn't require ATP whereas active transport does. This is because active transport involves the movement of particles against its concentration gradient, whereas facilitated diffusion ...
UT
Answered by Upasana T. • Biology tutor
17129 Views

How would you explain oxidative phosphorylation and chemiosmosis?

Reduced coenzymes produced in the Krebs cycle; glycolysis and Link Reaction (Reduced NAD and FAD) carry Hydrogen ions and electrons to the inner mitochondrial membrane , within the membrane are a number of p...
JB
Answered by Joseph B. • Biology tutor
4700 Views

What are enzyme inhibitors?

Enzyme inhibitors function to slow down the rate of an enzyme catalysed reaction by interfering with the enzyme in some form. There are two main types of inhibitors: 1. Irreversible inhibitors - these molecu...
YA
Answered by Yasmin A. • Biology tutor
17191 Views