Which of the following statements about the effect of surfaceqc1:guf4p ak lj5x ia5 0td7)f area and volume on the cell’s processe: 1iafclgxutfp4 )kd 50qj5a7s is false?

  Which statement best describes stsm9/xs; ,.bedyuy / l i*tudl9dus*4vem cells?

  Which is a correct desgi6m6, i a n9qkybp 7dpo47p8acription of the cell type adapted for gas exchange in the lungsiym6paq nodg,784ip 67b9ap k?

  Which of the following explains the )c0g,uhn md*z8y4ta o limitations on cell size?

  What is this cell's most likely primary function, and where could it be locafh 5ghl g+h)p:ted in a mammal :hpgglhh5)f +?

  Which of the followifre.v k;oa7 1fng characteristics of type I pneumocytes contribute to increasing the rate of gas exchan7;f raef1o .vkge?
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 of the fukjb7h0/n(: g iryps5i nctions of these cells is to produce red and white blood cells /k:gbj 0(hiyn5ip r7s. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells aw2ngx8+ 4t1hhy0ok+xj yawr 6nd striated muscle fx2ya1who6 8nt04kg+rjhx y w+ ibres?

Below is a diagram of a motor n8 7a0z+ iu(l g/vdeofceuron. Neurons are the longest cells in the human 7ia e/f(uo8c0dl +z gvbody.
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, wh:zg:v g om3;vmich could be caused by a lack of sufficient surfactant in the pulmonary alveoli. Tv gm;vz:: 3gomhe 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 .d (zdfm:b+ o7. 8-g yvjtfkwla reason that embryonic stem cells are not used in the treatment of leuka8k v7.t. w+obf:djl(d- mzy fgemia?

  The table shows the diameters of red blood cells from different organisms.a1gbf 7oa2do*wr63n z Which red blood cell will ha1b3* wzd7rga o2ano6fve the highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells lining the pro 1p5 /+ws n;/krvlsbqfximal convoluted t/v5bwrqs 1/ ;pfnkl+ subule make these cells more 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 stz1n ,nz+8mx wuz7q0m 03+ah 6,vvirs.jet qbpem cells and specialised cells is/are not true? q,it nz+ u.s,p 7zn3+6 0vxm8qhz1 ebwv0jmar

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 fryt)gqeca)6 ympady - 94nrj9)om smallest to largest?)-9)6ny9j d ryge)c4paa m tyq

  Which row in the following table gives the correctdp1 2wyn+. clz3el k;m disadvantages of the different stem cell sources lp;.zlne 13mykc dw 2+for therapeutic uses?

1.Describe how the usej prjosk,/y,g if65mze z7)r: of stem cells may be used to treat type I diabetes in the i,p,m e7o/szz 6g5 f:jj rykr)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 sc/)2xbgj5a(k o-bpr3 mt5v kitale).

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

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