Which of the following stateme4ht,6oo fo p 9ktj80ig9 qas4lnts about the effect of surface area and volume on the cell’s pro4ip9 to8qg6akh ots0 9fj4lo,cesses is false?

  Which statement best describes stem vs; +w -laneh 3nk-9rpcells?

  Which is a correct description of the cell typi,xpq yql 7q*7e adapted for gas exchange in the lungsixq7 q7q *,lyp?

  Which of the followim2dxwxh4s 7zx oh8l2-ng explains the limitations on cell size?

  What is this cell's most likely primary function, and where couk8- g/qf d:zujld it be located in a mammal? z:quk-/f 8jdg

  Which of the followinjq3x n,rbj5k/ g characteristics of type I pneumocytes contribute to increasing the rate of g5,kb j xrn3qj/as exchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marro.9jyo)w 1xd)4+0ilegp1cy sjf+h g jow transplant from a 36 year old. One of the functions of these cells is to produce red and white blood cells. What type of stem cells has the patie 4gfydoej+.p wc)0ji9sg1+yj 1lx) ohnt received?

  Based on the Venn diagram, which identifie;j l8. so, jsem970cmqja.ui ps cardiac muscle cells and striated muscle fibres8.m o9q pj 0l7ujacj;m ,s.sei?

Below is a diagram of a motor neuron. Neurons are tjf:clel 6-:sg av.x *ahe longest cells in the human body.fe6s xl j-.*a :gcval:
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes sufh r39o*3qz2w2ch nwa,c dtkb8fer from infant respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different alveoli structures. r zhcnw3 woh 9k832atqd*bc,2


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 cell.udotj zcu, (,s are not used in the treatment.zd(u, uc tjo, of leukaemia?

  The table shows the diameters of red blood cells frob/5 **7ocs hh3mulz-woh1pe qm different organisms. Which red blood cell will have the highest surface area to volume ratio o*7lz3oh1pm we5sbc-h q/h*u?

1.Explain how the shape of erythrocytes and cells lining the proximal convolu (9 elvnwr(0f7nh.gi7-rn) 2 hb aidkmted tubule make these mi(-0(hkhb7nw2g 9rr. ineldf)na 7v 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 c;ux.( vuswawv+5hg9.h1rysx 6 cehe(8wg -tstem cells and specialised cells is/are not truehy1hs e- ;er.8gvxg(.t(9 vchwas w 56+xw cuu?

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 cj)5c-2lze r/ ym sql6order from smallest to largest? s526 le/c-yqjm)zlc r

  Which row in the following table gives the corrkdfy -hb 79r.aect disadvantages of the different stem cell sources for th97rkby -a.hd ferapeutic uses?

1.Describe how the use of stem celle0 0yoarax+ egq7g3br by:,6as may be used to treat type I diabetes in the futgxbo37e r+ 0a:aa 6,0ryegybqure.

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 cellsun30. rinbsu y8l(mo l q9a; ifk3zg62 (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.