Search our library of homework questions

Top answers

All subjects

All levels

Gene mutations can arise during DNA replication. Explain why different types of gene mutation may have different effects on the encoded polypeptide.

Gene mutations arise due to errors in DNA replication and include insertion, deletion, substitution, inversion, duplication and translocation of bases. Each triplet of bases encodes one amino acid. Theref...

Answered by Harriet O. • Biology tutor

8240 Views

The line AB has equation 5x + 3y + 3 = 0 . (a) The line AB is parallel to the line with equation y = mx + 7 . Find the value of m. [2 marks] (b) The line AB intersects the line with equation 3x -2y + 17 = 0 at the point B. Find the coordinates of B.

Rearrange line into standard form.

y=5/3*x +1

For parallel lines the gradient is the same therefore m = 5/3

Point of intersection is where two lines equal eachother

multiply o...

Answered by Daniel H. • Maths tutor

4366 Views

How do you form the present subjunctive?

To form the present subjunctive of you have to start with the third person plural of the verb, for example 'jouent'. Remove the -ent from the end and add the following endings: -e, -es, -e, -ions, -iez, -...

Answered by Sebastian E. • French tutor

2009 Views

Which of the following are usually found on the Central Processing Unit(CPU) of a personal computer?

Hard disk drive - No
Control Unit - Yes
RAM - No
Arithmetic Logic Unit (ALU) - Yes
BIOS - Yes
Registers - Yes
ROM - No

Answered by Jack M. • Computing tutor

2533 Views

Rearrange the following to make 'W' the subject: aw + 3 = 4(bw + 5)

aw + 3 = 4(bw + 5)    Let's get rid of those brackets...
aw + 3 = 4bw + 20    Now we rearrange...
aw - 4bw = 17        Factorise...
w(a - 4b) = 17        Final rearrange...
w = 17 ...

Answered by Jack M. • Maths tutor

4278 Views