Which of the following statements about the e,c9vzq ve,haa2pa- 2 rffect of surface area and volume on theq29rvza hve2,caa-p, cell’s processes is false?

  Which statement best describes st 2+9qg*hadbxls)s:rc n) ,seeem cells?

  Which is a correct description of the cell type adapted for gas exchange in t/eo kw6w*stnrbn/ f0iy+*(u2h e v5cwhe lungsvyko bncn0r*(h6f*ew/5t /euwi ws+2?

  Which of the followinxe gol :q;mv e+u*a1o.g explains the limitations on cell size?

  What is this cell's most likely primary function, and where coulzk w/5a fbb2zu3 2(gnsd it be located w/bzz a2(ubgk2f5 n3sin a mammal?

  Which of the following characteristics of type I pneumocytes contribute to inh ; +bsj7pc,bocreasing th7jspoh c;+bb,e 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 transplantk1yt,6 /g,7 yqu pmdti from a 36 year old. One of the functions of these cells is to produce red and white 7,yit,dpq gm1y/ kut6 blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identr h9r7+wkoy3wifies cardiac muscle cells and striated musclewo9r7k+ w3yhr fibres?

Below is a diagram of a motor neuron. Neurons are the longest cells in thn-8 ,fa2(l7cfazsaw f4sv6ly 2qdgp(e human baayz 2vdff- s(pcqsawf( 7l2 g4n68,l ody.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from infant37vnl5dkit,k3 h 0kxu vk 6cy9 respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram53ktk vkn0vx cl7h9iukd ,3 6y 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 thh, *ap y*ppfk.at embryonic stem cells are not used in the treatment of leukae* pa,*phkfyp .mia?

  The table shows the diameters of red blood cells from different or (,eje*txytg5+iswh : ganisms. Which red blood cell will have the highest surface area to volume r (ti5,x:sgewj y+the*atio?

1.Explain how the shape of erythrocytes and cells lining the proximaw ood+ xl 1ec)m/jx05el convoluted tubule makc0l )j1od5 mo/exe w+xe 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 not t7 6v +rn6 wz-sdj7jkspk6a pwxfv 5)p,rue?6p j) 5axfs76j-w +7kpkv wp,r6zdsvn

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 ti7(je27y ryyt7e kcq )he correct order from smallest to largest?c t7)y ij y72e(krq7ye

  Which row in the following table gives the correct disadvantages of the uv;1(sn 2pwrzip -pm*different stem cell sourcvm ( nzppsi2- 1pw;ru*es for therapeutic uses?

1.Describe how the use of stem cells may be used to rmq -:bk4o27obotrkcv3ds;(treat type I diabetes in the futur;b73vkmqb4o2r c tdk oo-r (s: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 spea16/ 21 e d:hnkfvpao2ks2vzlcialised cells (not 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.