Which of the following s8ykvb/u 1tsg 5osbxp t;5kh0 togz12ie1hb-* tatements about the effect of surface area and volume on the cell’s processes is false5i1 2ho;o5t b1-8kzp/sh1*sk gbbtxe 0gyvtu?

  Which statement best dttpr +n bjgjg59m1*q/escribes stem cells?

  Which is a correct description b (adb/dhs)tj(o*tk::rkd nzo 8 j5-wof the cell type adapted for gas exchange in the l-r b)dj (ksz*d5n:od8k wtajb:t o/( hungs?

  Which of the following explains the lim )yd 8nswjhdl( huc4-ir*9rr,itations on cell size?

  What is this cell's most likely primary function, and where could it be wmo ;lhoyq;1i76c 7hj located in a mammal? hi; 1;owch6 o m7jl7yq

  Which of the following characteristics of typr43/6d tht e2x ldi3hqe I pneumocytes contribute to increasing the re2hr6tix4qd t/ 3ld h3ate 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 year old. Oneh;(4fty co rjn 4qyp+. of the functions of these cells is to produce red and white blood cells. What typn (y44c. ;q+ toryhfpje of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells and striathj/n 5dx zg 0htxv-ong*(j1l1ed muscle fibres? 5zogj/-0tn vxhl*h d1(x1jng

Below is a diagram of a motor neuron. Neurons are thebt y:qnct+(c 7 longest cells in the human bodytt:y+bcc(n7 q.
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 respiratj5y a)fx:r5 wf/ vw3piq0nyx*d)c(zo ory distress syndrome, which could be caused by a lack of sufficient sury) /z)jiqo d 0xc5(y*:a np5w wffxrv3factant in the pulmonary 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 used i+6 eh0vhg zw m.wa3h5 g e9h);)x8wsdxkm qcc:n the tread09;3mg xsc )8v z w e6c:hwqehx5g+km)a hh.wtment of leukaemia?

  The table shows the diameters of red blood cellb1 b79 d-mkwcds from different organisms. Which red blood cellwkc9b -1d bd7m will have the highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells lining the proei)ofs2wn+xy ydm11+ ximal convoluted tubule make these cells more adapted to the func 1yw+yefm is21x+ no)dtions 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 not 9o*utcx 0tboih)t ;x0 true? tx x; i)t0 0ho*ctobu9

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 correc -y79lnn8+i 7f pqqgpf hq4oq2t order from smallest to largest? -7qi o7lq4pnn2yph 8fqfg9q+

  Which row in the folloh+b itt4b j;; 5z3n4 4xw3*ulljpdwdvwing table gives the correct disadvantages of the different stem cell sources for therat4 ;dhw54*l v zx+ti nb3jdljw;pu34bpeutic uses?

1.Describe how the use of stem cells may be us2gdhj0tyjvvb-)/ 5td ed to treat type I diabetes in the 0-jb/j vgv)h d 5ttdy2future.

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 to scal5cru qo:/qt o(e).

1.Put these cells in order of size, from the smallest to the largest.

2.Compare and contrast totipotent, pluripotent and multipotent stem cells.