Which of the following st pm;k5jucr xq dj:.e03atements about the effect of surface area and volume on t e.3jqjkc0 x upm:5r;dhe cell’s processes is false?

  Which statement best describes ste cjiex1fk i4e4ks27/tm cells?

  Which is a correct description of the c 0,9 zvvi/f1cca(t fomell type adapted for gas exchange in the lung9a( ,i1 t o0cmf/fvcvzs?

  Which of the followip o lplx*5x4pw1 4kop:ng explains the limitations on cell size?

  What is this cell's most likely primary functi-. q) xapqri(+43ol hpeo(eixon, and where could it be located in a mam3opre q(opx )ax- 4l+ eih(.iqmal?

  Which of the following characteristics of type I pneumocytes contribute tookg 0t+y329ywk c0,1hpxtgtj increasing the rate of gas exchanget,109xh0 jk w3c2g ptyyt g+ok?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow transplant from a 36 year old. One of the func,:7wk5bg3+;ycj-hpn y iz iyptions of these cells is to produce red and white blood cells. What type of stem cells has the patient rech,y:+-;jpn wyp7i3kgib z 5yc eived?

  Based on the Venn diagram, which identifies cardiac muscle cells anm2kr ,m+p* s *7wk9,xw rje q-zhg*ongd striated muscle fibhr,mjkx* 7w9k*+sownp,ergq-*zg m2res?

Below is a diagram of a motor 4-hz0dy2 jevm neuron. Neurons are the longest cells in the human bod-je 40 2myhdvzy.
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 respi t2n b6pf p 20q+ f;)jazswnls*bu;yy)ratory distress syndrome, which could be ca*+wut b azqbyfnpj0ns;lf2;6 )s p)y2 used by a lack of sufficient surfactant in the pulmonary alveoli. The diagram 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 embryot*kjpz s/e*h5 nic stem cells are not used in the t5s** zhtp/jek reatment of leukaemia?

  The table shows the diameters of red x8ph:67kd3v eikz k- lblood cells from different organisms. Which red blood cell will have the highest surface p v3 kzk-i8hx:67kdl earea to volume ratio?

1.Explain how the shape ofmw g8g/x ig*3d erythrocytes and cells lining the proximal convoluted tubule make these cells more adapted to the functions ig*3m8gdwx /gthey 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 stem cells and specialised cww3hc mkx/v+-/jgc+i j6ry8fells is/are not trum38j -c/vhg+ +fi 6wxrc/jykwe?

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 following6)lnrjs/:hn., ,ziot3k6)1q jbs1hj cav sny is the correct order from smallest to largest?nv n,j jtr ,:1az s.1ssc)yjh)3/n6o hlbi6qk

  Which row in the following table gives the correct disadvantages of th7w/+ak1,g ( z7unt5dega n 5 ma4pazjre different stem cell sources for therapeutic uses?(gr etna57/ k 1 ajazz,7m agd45nuw+p

1.Describe how the use ofc(t7su-1hk w acloi. ; stem cells may be used to treat type I diabetes in the futureao(s; -h1 u7i ctklcw..

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 specialis/mb,ua 6e u wzwso4;zbcz2h .e7d7*pubm8 rg 7ed cells (not to scale).

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

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