Which of the following statements lfvra(3,sg 07 ip7yvtabout the effect of surface area and volume on a7frvv l 7yi( pt3s0,gthe cell’s processes is false?

  Which statement best des,1a wi- (auqmxcribes stem cells?

  Which is a correct description of the cell type adapted for gas exchange in thec*l).s-ijh1ilhafzp u073 az lungs?*h)1 aicf hzuz370 a-lpi.ls j

  Which of the following explains the limwlxp.h) 2u:xsr 60lf yitations on cell size?

  What is this cell's most likely primary function, and where could it be located*0idg*7bib u7odkk.l,i k yc; in a mi di kulk yc7d*.*;,k0 igbbo7ammal?

  Which of the following characteristics of type I pneumocytes cg6*,l ym .im:h d6zeefontribute to increasi.zie h l,*y6fe6md:mgng 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 year y0b lhhn+rk j h/.f/5dold. One of the functions on bhkr +j//5hhy0 l.fdf 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 muscoh.)abn w )qq6f8wtr: le cells and striated muscle fibres6:fb)o wh rq)8a.qt nw?

Below is a diagram of a motor neuron. Nej/wf,snqvqnx4w 04x 2 urons are the longest cells in the human bodyjn qq4wx vx,nf02 4w/s.
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 distsy , ;n;dy(sre9s ohl2ress syndrome, which could be caused by a lack of suffic;,srsyne h(2 s9ld; yoient 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 inopozw8-k9 mh8 the treatment of leukwooh 8 mz89kp-aemia?

  The table shows the diameters of rzrn -h4 lq4u-wed blood cells from different organisms. Which red blood cell will have the highest surface area to volulh-wz -qurn 44me ratio?

1.Explain how the shape of er dccf0ndi5-*j7u ekz.8t/ez eythrocytes and cells lining the proximal convoluted tubule make these c8zu/ e0zej in7 tf.kdd5 -c*ecells 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 embryonicf 8 vttrr;myj:,c;do4 stem cells and specialised cells is/are not truejtr8 rv,d;f;o m4 y:ct?

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 from smallest c1itegz61h) lto largest?1l ec1zti) gh6

  Which row in the following table gives the correct disadva :xudf4j17wrv3 ev- w, 7xglhentages of the different stem cell source:fdue3lr7vw egv 4x-whj,x17 s for therapeutic uses?

1.Describe how the use of slvh i.j4eg3) ttem cells may be used to treat type I diabetes in the future. vg3t4iej .) lh

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 specialiseq/. kj3yhr tyk.8j; aqd 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.