Which of the following stats4 w8punx0pqy j4fn( g.ya9j 0ements about the effect of surface area and volume on the cell’s processes i 08w. jyjnuyfp9xan4 g0 p4qs(s false?

  Which statement best describes steo9fhk4lt ,,cz )o(yo)f 5g :+vrvczw6gih8z z m cells?

  Which is a correct description of the cell type adapted for gas exfj xxte/4oi; 0change in the ;e4xti/o0f jxlungs?

  Which of the following explains the d/q/p l.nz zfo.b5p r;limitations on cell size?

  What is this cell's most e1h; lpw tgs1*likely primary function, and where could it be located in a mammsw11gp*t ;he lal?

  Which of the following characteristics of type I pneumiu-.s9bc4w+l 7zc 7 n/,zy4x j iyldomocytes contribute to increasing the rate of gas excha4ln./duyloj-xi+4s7 9cz 7mzyi w,cb nge?
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 functutr:: 1qmxy1lti70v qions of these cells is to produce red and white blood cells. What type of stem cells has the patient 7x 1:qt mv:rlui1tqy0received?

  Based on the Venn diagram, which identifies cardiac muscle cells and striated* afgzl ,0/vvta3j78mgd1mf4 cfbkc: muscle fibr:c0g3fzfjab7v4 kt, /avl m1mdfcg8 *es?

Below is a diagram of a motor neuron. Neurons are the longn-/vejm40v zyot* q-best cells in the humanb-nov j*zm-e4/ vy 0qt body.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from infantfn6 oqxgbdd+vg k 120, respiratory distress syndrome, which could be caused by a lack of sufficient surfactant kog10gq ,+dx nfdb62v 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 are noebu5 aqb*(.nrca st*49y fwd0t used in the treatsf0yn*w(b5q utc*brd4 .eaa9 ment of leukaemia?

  The table shows the diameters of red blood cells from different organisms. Whivj5iaf0fc181 zlp lfxo+,. 1: o knyqsch red blood cell will have the highest surface area to volume ratljxpzc :i10 osqf11fv 58oal,yfn.+kio?

1.Explain how the shape of erythrocytes and cells lining the proximalp0/kp)l+ t1q (e,ljk j6fvjkj convoluted tubule make these cells more adapted to pf)k(kpljkj1lt +0/v 6je, qjthe 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 cell1o8- wzvc7kpks is/are not truekczw1 p8v- k7o?

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 eut/h 4 xsk(n:dr 3fz7the correct order from smallest to largest?k se7fh n/4:dz t3(uxr

  Which row in the following table givess 8qp6ad (+x8vm;qn ,cwj qry0 the correct disadvantages of the different stem cew( rq8m;q xcq086v,nyad j+spll sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabeteszhz 6g4+dz ,dn in the future4dzng+hz6zd ,.

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)ka s5++q5jqj j(dr w9omhou vz6y (+1i.

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

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