Which of the following statements about the pol wmv5 9+am3f:y+5i*x nzfe effect of surface area and volume on the cell’s processes i lm5fmy3f xwa*i9ne5 :p+o+v zs false?

  Which statement best devuzt 82qu9 ez.scribes stem cells?

  Which is a correct description of the cell type adapted for gas y.i1i elb: 4alxf948u 4nvin c; x8graexchange in the l x :i .liv4x 8yb49g8acaelnfuni4 ;r1ungs?

  Which of the following explains the limitations e k87q xcb6q,ry x*l)bon cell size?

  What is this cell's most likely pralwpi2 h6:: f va*wf-y yb+2jaimary function, and where could it be located in a aw:fw l2 ab6yap2jh-*+ fiv:ymammal?

  Which of the following characteristics of type I pneumocytes contribute to id r,t(n/pi:lgvm7be*t1+l ntncreasing the rate of gas m+vg n7 , 1t:ttnib( rl*e/pldexchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow transplatve+ ez 4szopwkm.(4)3 1bjj tnt from a 36 year old. One of the functions of these cells is to produce red and white blood cells. What type of stem cells has the patient re +.ek4t)tjzw4e vj boz (1smp3ceived?

  Based on the Venn diagram, whi*c9irq:oib: 1oaieo4t0 nd78 x qx t+ach identifies cardiac muscle cells and striated muscle fibiit+c80x9a1i7o*de ob q:r o :xn4aqtres?

Below is a diagram of a motor neuron. Neurons are the longest ce/vnxvj;p oqg779eqvui( 1/if lls in the human bodyi9v /px voq7(1 ug;jvi en7qf/.
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 distressr kvb-g j;j4ymis n9-- syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shknrj- -m9v yjb-sig;4ows 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 arhya6 kfl/q*: x k-p-8zgyf-gre not used in the treatment of qzgka :-8-/hr *fg6-pflky yx leukaemia?

  The table shows the diameters o(1u 2/wv31ec rfw1 m u)qzbromf red blood cells from different organisms. Which red blood cell will have the highest surface area to vw2rf 1o )/ u(v3e1qcw1zrmmu bolume ratio?

1.Explain how the shape of erythrocytes and cells liixwoh5dr 0r+f :1 rru2ning the proximal convoluted tubule make these cells more +rdr5i w1r20ux:of rhadapted 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 stem cells and specialised cells is/are not tr3 7uzeod1t vqdqvl/fjd,93 2b ue? t l9zdqddbv,13f 3e2q /vj uo7

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 theoj+iy f8ui9j; jhb:z 6 correct order from smallest to largest?+jhoy 8u;6 ijif :z9jb

  Which row in the following table gives the correct disadvantgj6c y8v *aa y:;rnwu6ages of the different stem cell sources for t;cwy6nja*r6ayvg u:8herapeutic uses?

1.Describe how the u1om xa.0dabe-se of stem cells may be used to treat type I diabetes in the futur1db eoa-0 .xame.

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 specsj l ntdpwr2+s e ,8rx ghc*:4+0y9ibwialised 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.