Which of the following statements about the effect ofykim7d89 0eb e surface area and volume on the cell’s processes09ee8b7dym ki is false?

  Which statement best describes sia9ad 7 a5vkz30cilj exk57iod13z7 v tem cells?

  Which is a correct description of the cell type adapted for gas exchange u(bgmnbl.vp*n ,6u 7m7n : vw4apy(ux in the lunp:w7glxv.avu( *u nn nbpm ,(y74umb6gs?

  Which of the following explains the limitatioy3)ll+fl;l (ag lbq;o i9;su .wy/gih ns on cell size?

  What is this cell's most likely primary funjao 5md(kzv18h, 1lgoction, and where could it be located ooj,ka5ldv gz8m( 1 1hin a mammal?

  Which of the followi)reet0p x6wntaa5bwf2 :k) s1 ng characteristics of type I pneumocytes contribute to increasing thnp)2tw )r1ax: e s6afbw5kte 0e rate of gas 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 36 year old*fs kk4 g7w4yw. One of the functions of these cells is to produce red and white blood cells. What type of stem cells has thy7ksf4kw4w*g e patient received?

  Based on the Venn diagram, which identifies car 5cdly39/,fhzzplst. diac muscle cells and striated muscle fibres?.z5 p/,fl d39szhl yct

Below is a diagram of a motor neuron. Neurons are thea89pgdmw4fxqu ( ,n6x longest cells in the human wdpa4g xfm,9n 8q(xu6body.
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 p7xe hwzof;.5syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary ez;7x .5wpohfalveoli. 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 celxkh)-dxd4 y0w ls are not used in the treatmd4kh-d wx0 xy)ent of leukaemia?

  The table shows the diameters of red blood cells from different organisms. W.6(nyxyt u7o8 /lgg z qck9s-ehich red blood cell will have the hig(.8yuk-/ 7eg6yq t xnzol 9cgshest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells liw74fe5gl;fl+ m-:04vxe+mw gnr gh hlning the proximal convolutede ;x4le4wm :rh7ll+fhn5vmg+ gf w- g0 tubule 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 stem cells and specialised cells is/are no wv+uftk 0(ifep-(te (t true? t 0pt+ ukw-ifv ((fe(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 is the correct order fr 2jw0vx 0+9b)vy- ry 5hrwo7mmufw6op om smallest to largest?o-9x2bm)ryvmw5fhw6 0 vjpryu 7 0 ow+

  Which row in the following table gives the correct disadvantages of the diffeg/ iqu rhoj r3b+,b*5eqqnz: utgg ;8djv; p;8rent stem cell sourc ,;er pz dnb q+u3gv;5g8uh:*/qqobji;g8rjt es for therapeutic uses?

1.Describe how the use of stem cells may be used to trearcu-:f.mb- nk t type I diabetes in the future. mbn cfu-r-:. k

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 gqmit,fv0z3h 4 9vzf5ale).

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

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