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Describe how mRNA is produced in the nucleus of a cell

Helicase (an enzyme) breaks the hydrogen bonds between the DNA resulting in two strands. Only one strand acts as a template. RNA nucleotides attracted to exposed bases according to base pairing rules (A-U...

Answered by Rachel N. • Biology tutor

3414 Views

Two particles, A and B, are moving directly towards each other on a straight line with speeds of 6 m/s and 8 m/s respectively. The mass of A is 3 kg, and the mass of B is 2 kg. They collide to form a single particle of speed "v" m/s. Find v.

The student should apply their knowledge of conservation of momentum. Also, I would always encourage the student to draw a diagram for all mechanics questions as it helps visualise the problem.total chang...

Answered by Kieran H. • Maths tutor

4237 Views

What is the difference between law of diminishing returns to a factor and decreasing returns to scale?

The main difference is that the diminishing returns to a factor relates to the efficiency of adding a variable factor of production but the law of decreasing returns to scale refers to the efficiency of i...

Answered by Abigail C. • Economics tutor

31268 Views

What is the difference between structural and interactionist perspectives?

Structural perspectives, like Marxism, Functionalism and Feminism, focus on the idea that social interactions are generated from the top down. The individual is controlled by the institutions (such as the...

Answered by Megan H. • Sociology tutor

6749 Views

How does DNA replication take place?

DNA replication takes place by semi-conservative replication (i.e. only half of the strand in each DNA molecule are from the original DNA molecule). First, the enzyme DNA helices is required to break the ...

Answered by Laura H. • Biology tutor

3177 Views