Which of the following statements abouty.. nm* rwjb*u;4 wzc 2t;oxju the effect of surface area and volume on the cell’s processes is false xbun wo.;mrj2y*c jz;u4 w.t*?

  Which statement best describes stem celbcwecp-0 1hh)7ca)h:b b a wz3g;b3oqls?

  Which is a correct description of the cell type adapted for gas eehjk r06k lw kyeop*70d7/ti1 xchange in the lung7yr kekoe0p jk/it1wh*6 d70 ls?

  Which of the following explains the limitations onx/n /ms ,v1( cxv(b)ih:bdjjc *rc(qv cell size?

  What is this cell's most likely primary function, and where co m+q* g;gh)(it;yw5 p6d xfgeeuld it be located in a mammal? eh e(d; *5mpf ;gxqw g+gy)t6i

  Which of the following characteristics of type I pneumocytes contributeuyp*z r;vb4m/e ;0dui to increa;rep/uu;d viy 4*b m0zsing the 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 transplant from a 36 a5lvv2*kp.. gljn*5kja(9n: qhbag iyear old. One of the functions of these cells is to produce red and white blood cells. What type of stem cells hnq klh 9a jnaj:*bi k(g.l *a255pgv.vas the patient received?

  Based on the Venn diagram, w rc bv*e1c3zhk(d0qtfh60r a9hich identifies cardiac muscle cells and striated muscle fibres? 1 *v0zdt09khr3e(facc q rhb6

Below is a diagram of a motor neuron. Neurons are the longest cells in the human*to4 c5y3dapd dcp5yd4 3*aot 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 infant respirator 7wdn ph)z3zk vo*n6)oj6vw:zy distress syndrome, which could be caused by a lack of sufficient surfactant in the p*p)zzwh jvw:n)36 76kvodzo nulmonary 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 aredw5y n (bf1s8m not used in the treatment of leukaensm1fw58 b (dymia?

  The table shows the diameters of redvn8z : b6qy s7rwc.f,q blood cells from different organisms. Which red blood cell will have t8fs7.,b6zq: n cywqvrhe highest surface area to volume ratio?

1.Explain how the shape of erythr au1 rt )ywdhk.)+ual9ocytes and cells lining the proximal convoluted tubuluar l)a.hyu)d1wk9+t e make these 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 about embryonic stem cells antp,i gckd+kf; 58,vx zd specialised cells is/are not true? k8;gz,ikdvpcf,5t x+

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 thg otf9r6p.(tb+ocmy,e correct order from smallest to largest?,ortmgfyc9b+(6pt o.

  Which row in the following table gives the correct disadvantages of the differu wf+( i1i7bf3pqz+zttej6:qent stem cell sources for iq zi:6p1+j7uwtff ( e+ t3zbqtherapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetesfya +vcz ,,wb;sh4 6gu in the fuzyw fgv4+,h;acsb,6uture.

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 to4di)foi2gkzh27 u , yu 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.