Top answers

Explain the differences in structure between a vein and an artery

Arteries have a narrower lumen with a thicker layer of muscle tissue which contains more elastic. Whereas veins have a wider lumen with a thinner layer of muscle tissue. Veins also contain valves to prevent ...
LK
Answered by Louis K. • Biology tutor
3080 Views

i) Briefly explain the difference between anaerobic and aerobic respiration (2). ii) Which of these reactions produce more energy and briefly describe why?(2)

i) Anaerobic and aerobic respiration are both biochemical reactions (see below): ANAEROBIC RESPIRATIONGlucose = lactic acid + energy released AEROBIC RESPIRATIONGlucose + oxygen= carbon dioxide + water + ene...
MC
Answered by Mani C. • Biology tutor
3490 Views

when do you use the passato prossimo vs l'imperfetto

The passato prossimo is the more common of the two and indicates a past, completed action. e.g. ieri, ho dormito per 8 ore. l'imperfetto, on the other hand is for continuous or repeated actions. e.g when i w...
GC
Answered by Giulia C. • Italian tutor
2987 Views

Expand and simplify 4(x+5) + 3(x-7)

When we're doing algebra and expanding brackets, our first step is to multiply everything inside each bracket by what we have just before the bracket. Let's start with the 4(x+5). 4 lots of our unknown myste...
CM
Answered by Connor M. • Maths tutor
10486 Views

Prove that multiplication of two odd numbers produces an odd number.

An even number is any number that can be divided by two to give a whole number. If we define "n" as "any whole number", we can say that "2n" is an even number. Odd numbers canno...
JJ
Answered by Joseph J. • Maths tutor
28044 Views