Which of the followingc2m u -nk(7yjw ( lmy5i,cbhbp2o+mn* statements about the effect of surface area and volume on the cell’s processes is fakn*yon7h52 jm(yb-clb+mw,2 u(mp cilse?

  Which statement best describexxh,;t fk6 7 zs+ruj m)ros3w*s stem cells?

  Which is a correct description of the cell type adapted for gas exchange in the q 70ugbav9(4 2v truuv(tvu97 b rg0v4 u2auqvlungs?

  Which of the following explains the limitafzqvxv* :6,wch wqat0,2 *t vrtions on cell size?

  What is this cell's most likely prima0oe z9hjv5xx j4 t7v 78rcrr(qry function, and where could it be located in a m90xrhxjq7z t78e v rvo5( cjr4ammal?

  Which of the following characteristics of type I pneumo6k+s 7jk.kyci cytes contribute to increasing the ratejk.+s7ik 6 ykc of gas exchange?
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 of8d h kg3;.ymmf the functions of these cells is m f38dk m.g;hyto produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies c cwgtu (2ia;pvgbk62p.hwk(7 ardiac muscle cells and striated muscle fibw2u6 (h.p7 kgv(a;2pkwgcbi tres?

Below is a diagram of a motor neuron. Neurons are the longest cells in the ekemnn9zy7ax ip*)v* q*7t m 9s31qpc1hzcm 1human bips9na c7v1c1*zq9xph*yz 7)q e 1m kmn tm*e3ody.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from i7sq5b ybtjgv)6m)u5m 6+ 5 toz4nbqztnfant respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveolbzq)jy665s5 gu)m 4v+btz7 m5btqnt oi. 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 embryonic stem cells are not ucb(8 uyx m5cf7sed in the treatment of l(y 5fxc78ucbmeukaemia?

  The table shows the diameters of red blood cells from different o al u-fe94d2 r0me*wporganisms. Which red blood cell will have the highest surface area to volume m 0u*p4- 9aefword e2lratio?

1.Explain how the shape of erythrocytes and cells lining the proximaqsv ;0h4p hse5jzm(2a y.whx2l convoluted tubule make these cells more adapted to the fus(hspe02 zham .245xvjqyhw ;nctions 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 stem cells and specialised cells is/are no/q j,7w-j72zu m:w p7csu7 n fexi8rstt true?7u 28i zqwx wnsrjp j7tcse/7f,-u7m:

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 is the correct orderb52ozf;c rtz t*x 8qq -jl6mqc-j+ds; from smallest to largest?x-jlzb8;fc; -qjrz6 q2m+ so tq*5t cd

  Which row in the following table gives the correct disadvantages of the differeunuk3ic007 b k3bi2 *azzm3 36lghgman63 i nz0cmg0abu 2u*akm37 lk3zhgbi3t stem cell sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetes in thml i3:n .abvan70b (eie fut m(l.eb7ib:3vn niaa 0ure.

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 scal;1h or k2::fr ddqe-lqm4c w5we).

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

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