Which of the following statements about the effect of surface area and vav 6em-6 qet+ z7xymm9olume on the cell’s prm6zmvy-qex6 7et+9 maocesses is false?

  Which statement best describes stzzebzcj ;,xf pf-si 8yyac-gbco 6 j--ni/+7+em cells?

  Which is a correct description of the celb/f 15wvr y-cwl type adapted for gas exchange in the lungs/w bcywf5-v 1r?

  Which of the following explains the limitations o/4cbfo99hxf7 e76uhbl zezq( n cell size?

  What is this cell's most likely primary function, anbntd9 h:pg941n v/ 8rf)fybns d where could it be located int9 n )g rn8vbf y9d:nh1/fp4sb a mammal?

  Which of the following characteristics of type I pneumocytes contribute+sn nu d7j1g,7jo;rvw to increavw no 7;s7jr1du+,jngsing the 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 old3 rgfu,v ab 4mqgq8wqy; 28ik7. One of the functions of these cem8gbk,4i3y 8aq g ru fw2;qvq7lls is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which qz/)f qf8o/pasig d3-5c.z7 o,zryu d identifies cardiac muscle cells and striated muscle fib z/ifq.doco7uyz)g8a -/3f ,5qsdpzrres?

Below is a diagram of a motor neuron. Neurons are r 3i 0jhs,ny:othe longest cells in the human bodyno,: 3y jsi0hr.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies some4y d+-n.wx/n fzra, zmjzgy4ea ;) ut*times suffer from infant respiratory distress syndrome, which could be caused br+.n z4*zfm,/ utazd4 )jwg x -e;yynay a lack of sufficient surfactant in the pulmonary 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 a reason that embryonic stem cells arrmd5db djgf6b itgc:0;3l1 l-e not used in the treatment of leu3b1;g c - md5jldd0g:bif6rltkaemia?

  The table shows the diameters of red blood cells from diffegd r , j49qqk;bcso ,.g6xs8inspc -9lrent organisms. Which red blood cell will have the highest surface area to v;d,c8 q9krg,-p4sgo l isj6b.s 9 cqxnolume ratio?

1.Explain how the shape of erythrocytes and cells lining the proximal corrc*ob.m b 386zg3ryonvoluted tubule make these cells more adapted to the functions they perz3o .yobm grbc*68rr3form.

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 cellrw65hmp8/0+ : carggyv,hjg m s and specialised cells is/are not truew/ g mh+ myr6gc:,58ga0pvrhj?

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 isum (bac 6oqi 20w(dks3 the correct order from smallest to largest? (0 w3i6oamuc2k(b dqs

  Which row in the following tafa*6j*is n0ny12-lyqnnjbx u6pn3w( (5 eus fble gives the correct disadvantages of the different stem cell sources for therapeutic eun(isyxj5n snfq62wupl y (6b f3 -0a*1njn*uses?

1.Describe how the use of stem cells may be used to treat type I diabetesc,fy + 1ujtwl- in the futul,+j1t- fuwc yre.

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 (nvttxw9 ,d w l he2v;o(ijyd5av.y2t.) 1e, fzpot 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.