Which of the followi(ae aae a0;-fke2smq0ng statements about the effect of surface area and volume on the cell’s processes is e02(ae afakq;as 0em- false?

  Which statement best describes stem c+ye .xfk)xmm)ells?

  Which is a correct descriptiozd+wd4k0agcd) v w haw6 343wplwp f4-n of the cell type adapted for gas exchange in the lunwv3hwf) 4pd- 4d6ld43 z apg www+0kacgs?

  Which of the following explains xa yv4 iw.anx/q();oy*ww+y y the limitations on cell size?

  What is this cell's most likely primary function, and where could it be locat2sta 8/m+ qfm;5xe kwzed in a mammal?msf8k2q 5 wzex+t;/am

  Which of the following characteristics of type I pneumocytes contribute to incljbss 3w100v hreasing the rate ofsv01 hb0jws l3 gas exchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bonej kjv- j:cl/q2c.+g us marrow transplant from a 36 year old. One of the functions of these cells is to produce red and white blood cells. Whajqcv2.uk+jcs:jl /- gt type of stem cells has the patient received?

  Based on the Venn diagram, which id;)k y.caypuj 42 ( s)y /,gipoy/-jynopb:rrwentifies cardiac muscle cells and striated musc)ys uy:2ao/j ) jk(n,;py gir 4p/r-yoy. pwbcle fibres?

Below is a diagram of a motordd( hca.b k 7f.l(4pyh neuron. Neurons are the longest cells in the human bod 7df p ha4yl(.k.(chbdy.
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 syndrs 3leq(8m,1y jglv1e.blh4hi ome, which could be caused by a lack of suffic hilgv8,sl.yh1j(1bm l3q e4eient 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 dg gy8ylt- s1om)65rt f 1roy+.z e,gknot used in the treatment of leukaemia? k5+.1oyy8e g g1z fldr,s6ytmogrt -)

  The table shows the diameters of red blood cells from different orgf 56 gexzxlqm1u:,w4o3 0julqanisms. Which red blood cell will have the highest surface area to volume ratio6l4:3f,51jolqx mxue 0uqg zw?

1.Explain how the shape of erythsajw 3dml..u+rocytes and cells lining the proximal convoluted tubule make these cells more adapted to the functions they perform. w3. m asudj+.l

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 emb *z+cea 4nd1b:ccr0x oryonic stem cells and specialised cells is/are not tru0a4nr 1 cec*xz od:bc+e?

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 y7n za/ emx0d8jzd 6 ye:5.zdwis the correct order from smallest to largest?dy6z ewje . man:xd0d5y 78zz/

  Which row in the following table gives the correct disadvantages of the di8 c.s5vsncu0-vbuhhv. 3r cn;vj;k;g 5 3no tjfferent stem cell sources for therapeut5nv kgo v-;v3;j;.j3b8t vhncc50huu csr . nsic uses?

1.Describe how the use of stem cells may be used to treat type I diabetes in th cm4lx1sfrb8vbw0/vo iz7 7, pe7f8wvbm 1/bo4lpsi, 0 z7cvrx future.

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 sca:vq o+jm9 +zmlle).

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

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