# Melisa Yuka

Friendly and experienced science tutor with over 2 years experience

1131Students helped
£13Per hour
Maths

Asked by Sreve · 2 years ago

TRUE/FALSE: miRNAs are relatively short, on the order of 21-23 nucleotides, they only bind to mRNAs that are a perfect complementary match to the entire length of the miRNA?

MiRNA (micro RNA, clue should be in the name) is relatively small yes about 22 nucleotides and it binds to a complementary section on the mRNA not the whole length of the mRNA so that the translation of the mRNA is restricted as a result and the gene will not be expressed.

Physics

Asked by Lexi · 2 years ago

A toy car slides down a slope. If the top of the slope is 2m higher than the foot of the slope, how fast will the car be moving when it reaches the foot? (Assume that all of its g.p.e is transformed to k.e?

Assuming there are no energy losses due to friction or drag, the gravitational potential energy will change into kinetic potential energy as the car reaches the bottom of the slope. G.P.E = m*g*h K.E = (m*v^2)/2 where m = mass of toy car (kg) g = gravity (m/s^2) h = heigh of your car from the bottom (m) v = velocity of the toy car as it reaches the bottom (m/s) Equate K.E to G.P.E G.P.E =... more

English

Asked by Caterina · 2 years ago

Who knows any techniques to memorize fast words in a new language?

Practice, practice & practice! Speak to others in the language you are learning as much as possible. Record yourself and listen back to this whilst doing mundane tasks (e.g cleaning or driving) Use apps like Quizlet to create flash cards and revisit these every night before sleeping or early in the morning

# Melisa Yuka

Friendly and experienced science tutor with over 2 years experience

1131Students helped