Which of the following statements aba fvl: jx e+3*8ny/obsout the effect of surface area and volume on the cell’s processes sy e:n8+aol3f*j/ xbv is false?

  Which statement best describes stem cells?jtut8/e t 6:ia

  Which is a correct description of the cell type adapted for gas exchan dc.j 8 zcfu13;.m*sgowkag:qge in the lungsq.j3o1w:; z8auscm dgg.*fk c?

  Which of the following explains the limitations2y t in6)opw3r z:; (x ojex.hwz95mbr on cell size?

  What is this cell's most likely primary function, and where could it gb(3 wc*v,51kz h10jdwsrc ab be located in *bac3rw sj ,w(b1g1v0hk5czd a mammal?

  Which of the following characteristics of type I pneumocytrz,hjhz s3 n3yjvn)kd 8l ,3p3es contribute to increasing the rate of gas exchas h)lkp z33yj 3vr,3n,nd8jzhnge?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow 7 b*ui6hs8xmt transplant from a 36 year old. One of the functions of thxi *b7ums6t8 hese cells is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn dif9:g7zqmhf+ea v em+uor.5 khmd/b/ 8agram, which identifies cardiac muscle cells and striated muscl/ gofeb :587qz+h9ermd .+kv fum mha/e fibres?

Below is a diagram of a motor neuron. Neurons are the lon1w9o hzr;.a a *eblvi3gest cells in the human bodya9oz; h 3ea*wibr1 v.l.
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 syndrome, whitya1,hz9 ufe (ch could be cau1yae9(uzt, f hsed 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 embryonic stem cells are not used in th jw:qjs61-02p vt 3lhg9ia6ze5lsy ybe tljq0wa6b65y ti 1jh392p e:-glsv zysreatment of leukaemia?

  The table shows the diameters of red blood cells from differenglfl+92 (zxhk1 0t bk3p)uiuft organisms. Which red blood cell will have the highest surface area to vbpl hu )(kz3kt 9fu2x1gi0+ flolume ratio?

1.Explain how the shape of erythroblh,ew1,f f;4p4zix /;to w1tcs/mq g cytes and cells lining the proximal convoluted tubule make these cells mores fx1,bf414 ,/cp;gztti mwwlq;oe /h 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 stem cells and specialised cells is/are)cf rs2)ol or, not truesolf)cr 2o )r,?

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 order from smmlm+sobkud; ;.c269d ewj s2callest to largest?je d;l;6 9+2mmk ob wcus2c.sd

  Which row in the follo +gjjmi0mu w:8wing table gives the correct disadvantages of the different stem cell mjjw0:gim +u8sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetes in thea i2cw *7n/-vtay-h wb3sh7 rb future.yab/7hs-7-rc2bw a whiv n*t3

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 cellz)x u7p dz/cifvcjwwb40/, 1(o wrsh)s (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.