Which of the following state*dd20li;p 4o j pmtp3jv7 n4yoments about the effect of surface area and volume on the cell’s processes is 34y2lvdd0;o *t7 n4o pjpimpjfalse?

  Which statement best describes stem celwhqr56 )tmw)auuc9 (lls?

  Which is a correct descrip;/8 j3c21 qvcm o7idt) lydlpetion of the cell type adapted for gas exchange in the lungs?cty; 2 dql8d m17ev)cp/3jlio

  Which of the following explains the limitatiom ucqsz4 e4(i3ns on cell size?

  What is this cell's most likely znq54c 95t x;qka dc*dprimary function, and where could it be located in q cq5 ;d9dztc*kna4x5a mammal?

  Which of the following characteristics of type I pneumocs;cj,.zp yop9r j fq:6ytes contribute to increasing the rate of gas exchange?. qpcp6 ro,y jzjf:;9s
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 fo/uj e +yey+,tunctions of these cells is to produce red and white blood cells. What type of stem cells has the/ot,y+ue jy+e patient received?

  Based on the Venn diagram, which identifies caaf dx9-2yty y-i+q /wprdiac muscle cells and striated muscle fdy 2a p-/xyy-wtf+ 9iqibres?

Below is a diagram of a motor neuron. Neurons are the longest cells.4 sn )y 3os46 ebzm2ikafe9ce in the human bozea.icsf 34os 46 e)yek9nm2bdy.
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 respiratory distress syndro c pejm001)bunnw15akme, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different alveoli stru1ew0ma j)0npnbc5 k1 uctures.


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 te1 qo2s9 7h pcqxd2l;nhat embryonic stem cells are not used in the treatment of leukaemixqe71n ;ld o2ps h29qca?

  The table shows the dhp bwj l/-vx:*qdv ili+7ky0 (iameters of red blood cells from different organisms. Which red blood cell will have the highest surfax0pk ql+iy7d lv:j /ivh(*b-wce area to volume ratio?

1.Explain how the shape of erythrocyteszaxdipf1b o:65y v9k, and cells lining the proximal convoluted tubule make thezbafkvyd:61p,95 xio se cells 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 abogh +r8t ueyox8 6l)si(ut embryonic stem cells and specialised cells is/are not true? (ig 8 ho)8 +t6rsxlyue

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 smalleib8 ti 1 sl;sv+uf9d zo+mp0q4st to largest?0o;qi1s b9i4mv +d +8uf pstzl

  Which row in the following taig(: p cko*y o5vfadvp q376u5ble gives the correct disadvantages of the different stem cell su5 3oovg:7q (pd56f vipka y*cources for therapeutic uses?

1.Describe how the use of steoqi3 +z5 bw15k35foyjta-occ m cells may be used to treat type I diabetes in the f5c+k5cooowib j-zy1 33f5taq uture.

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 q pbq*m+iiak)u3ddz( ch/r /-vteh.8 (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.