Which of the following statemu9; (:pk5p2kvuqlhxczw befd: 2v 33jents about the effect of surface area and volume on;:l3kjpd9wpv3(f2 qex hvubc:52 zu k the cell’s processes is false?

  Which statement best describes stem cduo.fn.ic- * dt--s zyells?

  Which is a correct descrr .avhjoy 6m1wc i/8unk3dh20iption of the cell type adapted for gas exchange in the or6avn wk31u/ 02.8 h jchmidylungs?

  Which of the following explains the limitations on cell sizj zkn,7e0cd1ce?

  What is this cell's most likelyiub x-w v ycjcco68b9zwl(9. uh/k :rt*e8(qv primary function, and where could it be located t:9zw86 khrjb-8wu (eyvuv o bccxic lq.(*/9in a mammal?

  Which of the following charackokx,blgh 1:1 u,s/hsx -dho5teristics of type I pneumocytes contribute to increasing the ra1k u1hh : ssxdkgh 5,/,boox-lte 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 old.nj602714 mviifxzoyq One of the functions of these cells is to produ71i6n j vz2xyfmi4 q0oce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells and s b lly :/)k0npkpgu+0-o*o*k rnekao 8triated muscle fibrer*b+e*o lnla0k /u k-:k80pognokpy ) s?

Below is a diagram of a motor neuv1v,+f -aucw kron. Neurons are the longest cells in the human body. ,fk-cv vw+1au
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffe40d ; kci0veqor from infant respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. Te4 k0d0c vqio;he 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 celmcp4+/ ,puvkz ls are not used in the treatmen+zm, upk4/v pct of leukaemia?

  The table shows the diame ar3wc;h t.tc bq,3u6dters of red blood cells from different organisms. Which red blood cell will have the highest surface area to hqt 3wc u3.;rtb c6a,dvolume ratio?

1.Explain how the shape wye c;evrl;-6 of erythrocytes and cells lining the proximal convoluted tubule make these cells more adaptv-;e6lrw;c ye ed 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 speciali(g;ewbbvd7ban* lo06sed cells is/are not true b;wa6g *l7vn0b bd(oe?

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 g-mung6 t(b e9is the correct order from smallest to largest?-bu em ng9(6tg

  Which row in the following table gives the correct disadva)fyc;bl0 .)zyinj(vontages of the different stem cell sources fny v z)bfl0oc .;()yijor therapeutic uses?

1.Describe how the u dhu;2 *:t1cxgiy5iox q s8qz9se of stem cells may be used to treat type I diabetes in the f9q igx2uis85 c o;*yqd1:xtz huture.

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 ofe;dm- frdnh 4.d e7 o5:crq0ewp cjh f,)i9q/i specialised 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.