Which of the following statements about /ht+r.7gpxl.wk+ 2qk 6 s sfpathe effect of surface area and volume on thtr +6kq7a+kf.pgh w2sx .lsp/e cell’s processes is false?

  Which statement best dhz pl2lwh.yo-s7 z; n.+2n omwescribes stem cells?

  Which is a correct description of the cell type adapted for gas exchange in the 1um wyo 3ca y3978(.fank8yfta-wzdgluyg-3df u w k(cay otmfa.w9yzna83178ngs?

  Which of the following explains the limitations on cellp*2i;-xh)npekrb e3 d:1pf en size?

  What is this cell's moszeu,8 1qyo ob5t likely primary function, and where could it be located in a mammal? oe,yu5 8obqz1

  Which of the following chara i+;brgtq zw1 t4b:nq7cteristics of type I pneumocytes contribute to increasing the rate of gas excha t;tr gwq+1bq:4in7 zbnge?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow transpa*h0; o+77xuytaz saolant from a 36 year old. One of the functions of ahu0otxaa*s;7 oz +y 7these cells is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which pvo)nf, 4i sw,b gfrm)eb94.jy(vc h +identifies cardiac muscle cells and striated musclehpy vbef fs44r9+bw(cvj mn)g,o,.i) fibres?

Below is a diagram of a motor neuron. Ne/0g(q,vo asequrons are the longest cells in the human body.vq s ao0g/(e,q
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from infant respiratory distress syndvg.svygg5+l e1/drq +al 2:z prome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diag/gezd2gg5y .l sv1r :apqvl++ ram below shows two different alveoli structures.


1.Describe one feature of the surfactant.

2.Suggest a treatment for infant respiratory distress syndrome.

3.Draw a labelled diagram of the structures in an alveolus that are important for gas exchange.

  Which of the following is a reason that embryonic fzc gq;iil4i*7;pmjdwxb9vu0 ed)730 1vaipstem cells are not used in the treatment of leukaemi13q mvv0 b 9iplgjefi*7xui;0pw cz )id47da;a?

  The table shows the diameters of red blood cells from different organisms. Whi pa( swanf8zcsrv 7+ij3( lqe1 3fyo/-ch red blood cell f-jwyvas azsi1/+ 3qle8pr7 c(f3no ( will have the highest surface area to volume ratio?

1.Explain how the shape fqo9 x faf)qlt- ,bc91n;hrs ;of erythrocytes and cells lining the proximal convoluted tubule make these hr;1q-fxqn 9 sf,focalt) ;9bcells more adapted to the functions they perform.

2.Compare and contrast the structure of striated muscle cells and cardiac muscle fibres.

3.Explain how the structure of egg and sperm cells are adapted to their functions.

  Which statements about embryonic stemgm2y;sp :eg0f cz* wle 9s x+o2vho-c. cells and specialised cells is/are not true9w+y glos*x2ce; emo - :pg.czv sh20f?

I. Embryonic stem cells have higher levels of DNA methylation than differentiated cells
II. Specialised cells are more differentiated than embryonic stem cells
III. Most specialised cells and embryonic stem cells both contain the entire genome of an organism

  In humans, which of the following qrkg /-us 7 hc/lil6.bis the correct order from smallest to largest?lc r7q6b k-h/lsg/i.u

  Which row in the following table gives the correct disadvantages of the dipp/k 9yg)nohs;l3-x;oidx k7 fferent stem cell sources for therapeuxldh9)oip -o; gnkxys7k;/ p3 tic uses?

1.Describe how the use of stem cells may be used to treat typet5i mq06bdht5 a3 et;e I diabetes in the futureq5;63i dhtbm0 teta5e.

2.Explain the factors that limit cell size in humans.

3.Explain how red blood cells and striated muscle fibres are adapted to their function.

Below are diagrams of specialised cells (not to c8; u .oxrhm brix1o,7scale).

1.Put these cells in order of size, from the smallest to the largest.

2.Compare and contrast totipotent, pluripotent and multipotent stem cells.