Which of the following statements ab yd*tkh/w q- i63zsyq*g5et-u 64o yzfout the effect of surface area and volume on the cell’s proce6*wgkq3o4- q/zs6ehftytuiz-y 5*d ysses is false?

  Which statement best des8ij fbp. *o)r1y 2bqeccribes stem cells?

  Which is a correct description of the cell bdhn/.- aoyk4type adapted for gas exchange in the lungb/yk .doh -na4s?

  Which of the following explains the limitations on c 2ircelt8wtt5ar /0n5ell size?

  What is this cell's most likely primary fu2g yom-2wbt/ qnction, and where could it be located in a mammayot2/-bm 2gq wl?

  Which of the following characteristics of type I pneumocytes contribute :t 70jjhard(yucw(t 8 to increasing the rate of gas exchange?(jhjtr7t( ydu :wc0 a8
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 f6f(n4s7kaww+3suwvq2inu4 e unctions of these cells is to produce red and white blood cells. What type of stem cells has the patient received?w7 wknnse6 v a+4f3u4wus2(iq

  Based on the Venn diagram, which identifies cardiac muscle cells and striated givr ei) 1 yt5-zy(skywlc44 /muscle fibrewlr4es)zyty-/4gy 1k5c(iv i s?

Below is a diagram of a motor neuron. Neurons are the longest cells in the j 5:;xhwobyt/ 6is*lphuman body.i/pboxh*; :5lj 6ywts
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from infant respt+m aubu4r42c0msw;l xovit ;f 9o7q ()ghfp2iratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two (4o 9f tv2smc4bxwo;iu+m0pu ah g7r2;q ftl) 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 r.wh rs .zw+6)ekl bx9lor(b0 mxm(8 zoeason that embryonic stem cells are not used in the treatment ohmr zo(068 xkemowbr9ls(w+x )bzl. .f leukaemia?

  The table shows the diameters of red blood cel q73j9 h rloj;(wwow3ey is.*qls from different organisms. Which red blood ce(wl9iqh *r 373oj e;.swjq ywoll will have the highest surface area to volume ratio?

1.Explain how the shape of erynvu e3d7r .g(vthrocytes and cells lining the proximal convoluted tubule make these cel3 7(edvvrgn. uls 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 n)g (/3 9d20hqdq ))ccz+ivkfm 3zyonedabdh* ot true? zh 9ban )qg+d2 mdd3q)ei 3(*zyhf0kdc/o v)c

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 the correct order from smawq z+pj.x-ymu/(s gp r*1k qd,llest to largest?kd yj rm-qqg u.(w+1p*,xps/z

  Which row in the following table gives thez) k;prb-fa) i correct disadvantages of the different stem cel i)-bf;raz)p kl sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diav pijp +a5n37dbetes in thevpia5jp7+3d n future.

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 (n v1;t it- ukety):cr9 t(+seqeot 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.