Which of the following statements about )jvl-pd2,ez//uac6o (eqlnf the effect of surface area and volume on the cell’s pucl(6e - )v2daj//p ze fqno,lrocesses is false?

  Which statement best describes stem f2:lemwwz3qper6 9 i (cells?

  Which is a correct description of the cell type adapted for gas exchange in th.l g0cy ms/sx0e lsc/.s0 lxgy0m ungs?

  Which of the following explainve18wtbr., y1 uty- ajs the limitations on cell size?

  What is this cell's most likely primadv;/u e-ggmn vifua +)9)l3igry function, and where could it be located gnm 9i uv)-vg)ei gf+/d a3u;lin a mammal?

  Which of the following characteristics of type I pneumocytes contribute to ik,y7mmz0 rb5r ncreasing the rate of gas exm 0bkr7,y5 rmzchange?
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 3bcnt ssb 5::sa 36 year old. One of the functions of these cellss5s :n:c3 tsbb is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifi.pr 6paw(.lfhn(, cudv l 6e,res cardiac muscle cells and striated muscle fibru(le66 awhf rrp lc.,d(,v np.es?

Below is a diagram of a motor neuron. Neurons are the(cj3 k n+e8kyt longest cells in the human bodtjke+3(n 8c yky.
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 distressvu hi3 e.:)p-eiwq 3ht syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different awh)u- i3pqvee:3i.ht lveoli 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 wh87g-uk;wcrz2 g1 xx used in the treatment of leukk1;g87uzr2g-wc hxw x aemia?

  The table shows the diameters of red blood cells from different organisn8ua unq(3 r2kg3+ ducms. Which red blood cell will have g 3nquck32+u( ra8udnthe highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cell i9. r*qduz3b.ob)p xls lining the proximal convoluted tubule make these cells more adapted to the functio3iz9lrbq ox.)d.b pu*ns 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 cel3 7hxc8x *lelcs+9kl sls is/are not true *+k7 sle9lxlc h3sc8x?

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 smalles5qao(74hfcd6 rsb on,t to largest?so5(6 f hda,nc4rq b7o

  Which row in the following table gives the correct disadvantages of the differe cqj;(xlnm3v3 ) mom5ant stem cell sources for therapeutic us 33nlja(vmmo x; )qc5mes?

1.Describe how the use of stem cells may be used 4d,alm- fze l)to treat type I diabetes in the futurl)dz efm,-al4 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 (not to c-h ugix v6o:1scale).

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

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