Which of the following statements about the euwdm.p+.9od ptw t6 .ri2ia/ rffect of surface area and volume on the cell’s prou pw.p9 i6ot.r+.tdiw2 md/racesses is false?

  Which statement best describes stem cellsb u32d.t ze(pt?

  Which is a correct description of the cell type adapted fo3 k1w+sw9.xq 1*xam r 7w;guzflwad8wr gas exchange in the lm+wx8uzww*k7;1lw a as9. fdq3xrg1w ungs?

  Which of the following explains the limitations on ce1t0c5e ruvvfb(/fjq - ll size?

  What is this cell's most likely primary function, and where could it bmc 8ss)*p9s bye located in a mammal?s 9*by8sms)c p

  Which of the following characteristics of type I pneumocytes contribute to incria qv42:-b1olvhj8k (zdf2 ox easing the rate z1oxd:8q2jkav i(hlf b - 2vo4of 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. One of the frk jd97 :mcq3z2 ur/xo/e6nf aunctions of thejoru3cf / :7aezq92/nrmd6kx se cells is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle wb;(d-jd kahq:p :c o:cells and striated muscle fibres(: k do:ajdpqh: ;w-bc?

Below is a diagram of a motor neuron. Neurons are the longest cells in +f8yp2ms .dr; dsb r+vthe human bod;s r bd vsd.+2pyfr+8my.
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 dis56;nvlh v2vhvtress syndrome, which could be caused by a lack of sufficient surfactant in the pulmon vhv6h; n25lvvary 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 avu.r) 8hovras3 * t4fk reason that embryonic stem cells are not used in the o8skfv* tvar .h 3r4u)treatment of leukaemia?

  The table shows the diameters of redu 86qebz9z-am blood cells from different organisms. Which red blood cel ez9q6uz8bma -l will have the highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and ce x j2+/nfgnil/lls lining the proximal convoluted tubule make these celllinj+xf//g 2 ns 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 speciwcpwo j ) 3qr1bym,)j9alised cells is/are not true q3,orbw w)yj1)j9pcm?

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 fvu y*od-vg;v3 0,poa2 0zu mxmrom smallest to largest?u xv y;302vm,udga vo-op m0*z

  Which row in the following table gives the correct disadvantages of t 8mzqjz 76 y(w5ng92dn9bosjehe different stem cell sources fos9zom9jnbdj(7 z y q5e82wgn6r therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabgwvm-y dkz* 07i xrl)3etes in the futurdlmx r0-3 7z)wygv ki*e.

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 (nkkbl c59+mr05 vqjt-cnkts7: ot 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.