Which of the following statements gbm6j4-(gm tt about the effect of surface area and volume on the bttg( mjm 6g-4cell’s processes is false?

  Which statement best descripa 6,uc1 qf jalm-n-x(bes stem cells?

  Which is a correct description of the cell tp5 je86ua wzh3ype adapted for gas exchange in the lupeha83wjz 56ungs?

  Which of the following explains tq.bgi5 o63im4 +px gm6 td+oqche limitations on cell size?

  What is this cell's most likely primary function, and where could it be loc4ufi3 eqdgq67,dda qiw aka),4)hjw .ated in a ma6g a adkh)w),iqfa 7wu,ej4d 34qd. iqmmal?

  Which of the following characteristics of type I pneumocytes contrb ; a,b96zzbqjibute to increasing the rate of gas ,bb9a zbj6z q;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 transplad4+9gu2uidj:rk. lpp nt from a 36 year old. One of the functions of these cells is to produce red and white blood cells. What type of ste. p2lu:djp ri+ukgd 49m cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muz i 1q3(ow6f k;-vutd8dtigaq8,bf;hscle cells and striated muscle fibres? 3vk -8t;gatdf1ih(bdq i,qu6;oz8 wf

Below is a diagram of a m6s3nl1ql yj5ral )9y ootor neuron. Neurons are the longest cells in the human bodyl)5 l3n1 rjyq6 oy9las.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimxk:hm/fk;y sk*/kb, zn -r ct *r0i3sfes suffer from infant respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two differenhk3ykt0k** ;x/-fs k/b i:z,s f rrmcnt 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 cells are not used i8 l;trgkl-zled6ji 7:9xv -oiuwc 1+hn the treatment of 7rkli8l;xjz+u- dc6vogt w-i 9:1le hleukaemia?

  The table shows the diameters of red blood cells from different organismsws5am .pv np6..d6xzk. Which red blood cell will .p6nazmdvw. kxs. 65phave the highest surface area to volume ratio?

1.Explain how the shape of erythrok0ow ;q5*aq lpe5 g+(3sr5h pzhau,epcytes and cells lining the proximal convoluted tubule make these cells more adapted to the functions they perform zhq;a*psk3 q(h,+5e ap5l 0uo pg5ewr.

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 specialim4u p 6fgav3s,sed cells is/are not true?p64v ,fusa3mg

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 followif*fn jrfj5be 8))j(o1 olkl fx75 .qxm4zp i6rng is the correct order from smallest to largest?pmnke.r5flx)oif) obqfrjj7f5 x 184z* 6 jl(

  Which row in the following table gives the correct disadvantages of the differxz; k n+4zv(tuent stem cell sourcun+xz vz;t4 k(es for therapeutic uses?

1.Describe how the use of shts69u5wis6 stem cells may be used to treat type I diabetes in the futuhs 5ssi6 w9tu6re.

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 scale).etq;q00c dc5l5 z ylt9

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

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