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What is the difference between chromatin and a chromosome?

The difference between chromatin and chromosome can be highlighted when using the analogy of a wool. Chromatin is the unwound wool pile of wool where as chromosomes are the tightly wound and condensed woo...

Answered by Francesca B. • Biology tutor

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Describe and explain the electron transport chain and oxidative phosphorylation

For this kind of question, facts such as how this is the last step of aerobic respiration, which happens in the mitochondrial membrane - most specifically the cristae (inner folds of the mitochondria) - s...

Answered by Alejandro E. • Biology tutor

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List the three characteristic properties of reactant particles which affect the rate of reaction as described by the collision theory.

The frequency of collisionskinetic energy of particlescollision geometry (orientation)

Answered by Alisa H. • Chemistry tutor

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Calculate: (a) The amount, in mol, of white phosphorus used, (b) the limiting reagent, (c) the excess amount, in mol, of the other reagent.

P₄(s) + 3OH^-(aq) + 3H₂O(l) ---> PH₃(g) + 3H₂PO₂^-(aq)
Provided for answering (a): Mass of white phosphorus: 2...

Answered by Lisajo O. • Chemistry tutor

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Consider the infinite geometric sequence 25 , 5 , 1 , 0.2 , ... (a) Find the common ratio. (b) Find (i) the 10th term; (ii) an expression for the nth term. (c) Find the sum of the infinite sequence.

QUESTION (a) R = U(n+1)/U(n ) = 5/25= 0.2(b) (i) U(10) = 25 x (1/5)^9 = 0.0000128 (ii) U(n) = 25 x (1/5)^(n-1)(c) S = U(1)/(1-r) = 25/(1-(1/5))=25/(4/5))=125/4=31.25

Answered by Carlota R. • Maths tutor

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