What mode of transport do z x 6 rrsst2l:e6wb0j8neurotransmitters use to travel across the synaptic cleftr t0 l8:6bsxr6s z2ewj?

  What is the name of the organellezgwidxa* r+q7lf wf ia4:)q2p97mqd( on the surface of the rough endoplasmic reticulum that is needed tolm2 q*9qwgf zx:7iqpaf)4dd( +i7ar w synthesise polypeptide chains?

  Which of the followi3gmm8f+spoyv sy3 0z)ng is true of centrifugation?

  The image below is a micr)tn*grzc.tb 2fd9xomm 4p2 8hograph of blood.


1.Identify the part of the cells labelled A and B.
arrow    points to the nucleus; arrow   points to the plasma membrane
2.Outline why blood is classified as a tissue.

3.State where the stem cells needed to produce red blood cells are located.

4.Progenitor cells are produced by dividing stem cells. These cells will eventually differentiate even further. Blood cells have a common progenitor cell. Describe the process that happens to these progenitor cells.

  The diagram shows prophase, an ea rwpucnvtb c io,3 (.b6c.pk:brs.d3, rly stage of mitosis.

What is the fate of the nuclear membrane immediately after prophase is complete?

  The following micrograph shows part of a chloride cell.in4 a sls(-8gb What statement is true about the paras ing4 l-8b(sts of the cell labelled X and Y?

  Identify the row which is correct regarding i/ +b9bdy g5mathe components of cells.

  Which of the following substances cannot pass through the pores of the nucqfpujb;j(z77 8f8k ge* pnfd(lear membrkfpj* qnpf878 ;jeubgzd f7(( ane?

  Which of the following processes occur in prokaryotic ye e9y d.p4m)ncells but not eukaryotic ceep 9d4nmy).e ylls?

  Which statement applies to a lysosomz+hv;mo)tz7ryixh 4 (e?

  Which technique was first developed to separate celluu 3l*k*d lt g/jr1dbf20nl :te:rwdt /lar components and isolate organed*3/lf u:t:1lbt/r kle gdr0wdtj n*2lles?

  Which of the following accurately describes a key difference*e,69-z -vtmy8r*mpoju m mf r in transcription between u r-*mr-z, j98e6mvf tpmyo *mprokaryotes and eukaryotes?

  The diagram shows the pqdu- mgru z2)-z*qo+j9 jhyx )rocess of phagocytosis.

1.On the diagram, label a lysosome using the letter L.

2.State, with a reason, whether a lysosome is an organelle or not.
A lysosome is an    because it is adapted to perform a specific function
3.Predict, with a reason, how a cell might be affected if the enzymes present in lysosomes were not stored within a phospholipid bilayer.

4.Describe how ultracentrifugation is used in the study of organelles.

5.Distinguish between prokaryotes and eukaryotes, in terms of compartmentalisation.

6.Explain how compartmentalisation is beneficial during phagocytosis.

1.Compare and contrast the structure and function of free and bot9:cvwjrs c k,n4jd5gj5 42bg und ribosomes.

2.Describe the steps in the initiation of translation.

3.Explain how the bonds between amino acids contribute to the structure of proteins.

  What is the fate of a ribosome after translation is complete9wtju.x 3u pb;d?

1.Outline how gel electrophoresis separates molecules and suggest a us 5k3ltim ( bo 9pli6+wgne8;fxe for this seplbotii89 pe65wk 3(xlf;mgn + aration technique.

2.Explain how compartmentalisation is advantageous to eukaryotic cells.

3.In eukaryotic cells, transcription occurs in the nucleus and translation occurs in the cytoplasm. Explain the benefits to the cell of this physical separation.