Which of the following statements about the effect of surface area and volumm9 sb6 k-6.rqok;g avcvbdx) * xwk6k/e on tb)k/9q .xdv-bx6vw* ;kkcmr6gk6s ao he cell’s processes is false?

  Which statement best describb16qda d, s)csfkv+-2j7jkms 5fb j/wes stem cells?

  Which is a correct description of the cell type adapted for v1f,x tl njq6 (do,e1cgas exchange in the lungs16eqd ,tx jo,lfc 1v(n?

  Which of the following explains the limitations ; * wqj8x7mp,xkr2uxbon cell size?

  What is this cell's most q k;0wooy;t .blikely primary function, and where could it be located in a mq0 o. bktyw;;oammal?

  Which of the following characteristics 0:ty2kd g-i7 i8i3 zk t fwye2hon37;c1ijrtd of type I pneumocytes contribute to incrercjik0iydotk dy;3 ftw73 -2i1g8zie27t n:h asing 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 bok2af2gx 9:u mgne marrow transplant from a 36 year old. One of the functions of these cells is to produce red and white bloodx k:2 ag29mguf cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cel9m x d.a+lpl- 95w5judsusf)kls and striated muscle fibres?9sjd 95pf+5m)sw au.klu-lxd

Below is a diagram of a motor neuron. Neurons are the longest cells in the hu9*w0,gvnms f dmannvw*0gms9 fd, 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 respiratory distwz (8: ef* ixn/:cqfbmress syndrome, which could be cq f(mb/n wfz ie::8xc*aused by a lack of sufficient surfactant 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 in t8ywc3 tqdzgm.zuk+f i.r:2 /d he treatment of leukat3mf.gc :y/dzq8+dz2u k. riwemia?

  The table shows the diameters of red blood cells from different oh,6-qx*smeo)1b bkdc rganisms. Which red blood cell will have the highest surface area to volume ratio?k1b ,6mhd *)bescx-oq

1.Explain how the shape of erythrocytes and cells lining the proxo+lidj ;t2(ze0 .pyyt(33b tqvwr7qiimal convoluted tubule make these cells moreyvorib( jztt. lq+wei2 qt;0(y37p3d 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 ce ,u, rd-osk/aolls is/are not true? druso/k,- a o,

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 cm15d1 5hnmj wl8 v(xumorrect order from smallest to largest?xjw1(mhvdlmu8nm 51 5

  Which row in the follpj)se0v9 m *wyejew2 su:v2f7owing table gives the correct disadvantages of the different stem 9e w2yf:es20 jj)m*pev uwv7scell sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetesamom07b9 r( 95vltc)p/ sfnksa57j nl in the f/9jclaobm(v5fknns 70tp a7lrm5) 9suture.

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 specialisy7je ykpiki9-s 88 n(ged cells (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.