RNA is a polymer of(A) glycosides(B) ribonucleosides(C) ribonucleotides(D) ribosesQ.6 Which one of the following is present in a bacterial cell?(A) 28S rRNA(B) 70S ribosome(C) Chitinous cell wall(D) Histones

Which of the following biomolecules is not present in ribosomes?

RNA molecules that, together with proteins, make up ribosomes.Group of answer choicestRNAsiRNAmRNArRNAsnRNANext

5. (a) (i) Both the bacterial cell and the plant cell contain ribosomes. What is the function of a ribosome? ______________________________________________________________ ______________________________________________________________ (1) (ii) The plant cell contains mitochondria but the bacterial cell does not contain mitochondria. Give one other way in which the plant cell is different from the bacterial cell. ______________________________________________________________ ______________________________________________________________ (1) Page 13 of 18(b) (i) Both cells are drawn the same length, but the magnification of each cell is different. The real length of the bacterial cell is 2 micrometres. Calculate the real length, X, of the plant cell. Give your answer in micrometres. Show clearly how you work out your answer. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ X = ____________________ micrometres (2) (ii) Most mitochondria are about 3 micrometres in length. The plant cell contains mitochondria but the bacterial cell does not contain mitochondria. Use your answer to part (b)(i) and the information in the diagram to suggest why. ______________________________________________________________ ______________________________________________________________ (1) (Total 5 marks)

Does a bacterial cell have ribosomes?yesno

The most abundant type of RNA in a metabolically active mammalian cell is(A) mRNA(B) rRNA(C) snoRNA(D) tRNAQ.4 Which organelle in a eukaryotic cell is the site of electron transport chain?(A) Endoplasmic reticulum(B) Golgi apparatus(C) Mitochondrion(D) Peroxisome