Which of the following statements about the effect of surface area and volume u/chu-l7p 4vbon the cell’s/uvl4u h pb-7c processes is false?

  Which statement best describ c8 6goe;kb7lw dzfvz;i1uo ),es stem cells?

  Which is a correct description ofc, k-jx6 ;lsym the cell type adapted for gas exchange in the l6- kxms;c lj,yungs?

  Which of the following explains the limitaqw4nscq(w g3*5l+ptf q2 1izy tions on cell size?

  What is this cell's most likely primary function, and where c3fzvn/4 32 z xcr06mlqnkt 6jrould it be located in a mammact3/ zrqzfjk3nxvnl 6m062 4r l?

  Which of the following characteristics of typeviycdmar2 w70vsu ,qt615b(l I pneumocytes contribute to increasing t urq 2a,v750tybdv16(lcsm iw he 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 transplantskaoosr; j38;d47t ax from a 36 year old. One of the functions o oja8 ;k;47 doxrtssa3f these cells is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac musclf /u60sw gnd+ae cells and striated muscle fibr nfu/gsa+06wd es?

Below is a diagram of a motor neuron. Neurons are the lg erf;mj)f)w hed3l p64x z;1vi dt01nongest cells in the human bod 6tv1;4pel) j en)1xmgzd; fr3df hwi0y.
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 r70f;flawnz o1yp3n: 91sozs9js2ydtrhh - ,y espiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmon: ,h7y 1s;f21o p-ns39 fzynwlsdazrjhy to09 ary 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 not .vggf agy.(o:otoc1 x,eq 4o/h -hh,bused in the treatment of leu(qyogge1/v :htgbho ,o 4. a.chxo,f-kaemia?

  The table shows the diameters of ;djvksc88wjb2c 4)r k red blood cells from different organisms. Which red blood cell will have the highest surface area4jkc;8v2 b 8d) cswjkr to volume ratio?

1.Explain how the shape of erythrocytes l -,otz rcq2-ol1,at aqmew 8;and cells lining the proximal convoluted tubule make these celll-aqz ;wc orlaetm812,,ot q- s 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/areql; ml: 0fjvznn-2rw 1 not truejn n:vl1 qzmlr -0;wf2?

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 froq+(ntsaj, m3c m smallest to largest?j(t ,+3nsmacq

  Which row in the following table gives the correct c )afj5qc:m0fi5s qut f9;*u mdisadvantages of the different stem cell sourc;q fuj5ut*ms ):cf 5qcam9if0es for therapeutic uses?

1.Describe how the use of stem cells may be 1).bpfdl9kh l(mg *vrused to treat type I diabetes in the fu19f.)kp( vg*dbhl rmlture.

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 b3ccj2k,rlgh:u 6g, t (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.