Which of the following sta7-4cj yzuv*gzzd;a ;ntements about the effect of surface area and volume on the cell’s processes is false zzjvudz n 7c*-g;;4ya?

  Which statement best describey i-7hsofs a9j5ioz )vj xs+svi5098v s stem cells?

  Which is a correct description of the cell type adapted for gas exchanw.ni i3ovk:2,xvuh:p iustqg1,;h k7ge in the lung ,q2po:nuhi3ghw i.7 tki1;sxu ,:kvvs?

  Which of the following explains the limitations on/tm;(ahqembnv7 70huxs p 67h cell size?

  What is this cell's most likef tr:b0)l.eli5rt dozs xy7.;ly primary function, and where could it be located in :f ;ez rbdo0tr5ls.x yi)7.lta mammal?

  Which of the following characteristics of type I pneumocytes contribufh+3wa9ja w920 5fjly nkfbn2te to increasing the rate of gasj2k yaj9 h2ffb9 n+lfw 503naw 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 o gy7ot1.; li(rlv,og 36 year old. One of the functions of these cells is to produce red al,(grt; gooo.li71vynd white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells and striatnh3c fxwj7wiu7 -(fu: ed muscl3n (j-cxu:iw ff7whu7 e fibres?

Below is a diagram of a motor neuron. Neurons are the longest cells in the humaaez((kk8 qjf*ro fb:(o:qen98li/xukbw d +4nj n (/+q*:dkula wb 9k (8k(izefqo 84f:rxbeo body.
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 syndrom u*:fz7)hjjk he, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below s: jfhh*)zku7j hows 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 unum1 t37gl, dgq1ijari, o/g( sed in the /oi1iq7a g3rtud(, 1gjn ,gl mtreatment of leukaemia?

  The table shows the diameters of red blood cells from d;ptz yg5y6y0yc 0,o ptifferent organisms. Which red blood cell will have the highest surfac ;,o c py0g6ytpy0z5tye area to volume ratio?

1.Explain how the shape of erythrocy9l phr)y /owqm)mw06bzd 0ot-w;:gru3f el9b tes and cells lining the proximal convoluted tubule make these cells more adapted to t w)t/0g lp- h weo:lzy6w r0;b)q bou9r9dm3mfhe 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 stem cells and specifizi r0e1yw*b d)c n-(7qdi4u alised cells is/are not tru -ed i 7ry0*)b(qwniuc1idfz4e?

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 corrhlzl 8+k;cji- nu;82 sze,c0ojo8m fbect order from smallest to largest?j+ciu8 ; e,-oc ;m js8k2bzh llz8ofn0

  Which row in the following table gives the corr:zs f) p df(adkgq.65pect disadvantages of the different stem cell sources for therapeutic uses? :sffzpa(5q6pd.d g k)

1.Describe how the use of stem cells may be used to trerd y 5uz*u 4;ctcs.zc*at type I diabetes in the futured;y*r. ccc*4zut5uz s.

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 specialis4 lu)sg;wu16yyxzu j -ed 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.