Which of the following st4xya+ pw(. ,7on fbkf l.vd jwu,1hv(jatements about the effect of surface area and volume ondn,,jjp(+wffh .ou l 7w(v41av yxkb. the cell’s processes is false?

  Which statement best describes stem cells?b3(son,mz bf 6ufb06d

  Which is a correct description of the ce6hp: ahj:vn d 3n,4lpall type adapted for gas exchange in the luavnpl34h ja d ,n6::phngs?

  Which of the following explains the limitj7xkc3 mf1 att *hv4.x5l 8h/lpomi)gations on cell size?

  What is this cell's most likely primary function, v6w b; bmm4*7riti5k yand where could it be located in i*54r; m ymw7ibtb6 vka mammal?

  Which of the following characteristics of type I d p;mc9 ho6v9/ l f)hatk0zd9prgjt9 0pneumocytes contribute to increasing the rate )tfdr09vtg9okdhc m99zhp/lpaj 6;0of 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 trmy2 1*,uga dxvl37j gqpmy*, lansplant from a 36 year old. One of the functions of these cells is to produce red a32ydl 7 ,l a* ,v1ggmjm*yxpqund white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifo 1,m9nrn pg(:nupyc1 yf; 7paies cardiac muscle cells and striated musnf,7a p1 gnp91yo(r:muyp;nc cle fibres?

Below is a diagram of a motor neuron. Neurons are thr4i/8s.j 9hy4a gjjsnm 0t w3he longest cells in the human bodjj .s9n rwh s4a/jmth403yi8g y.
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 distress syndrpan9 n8-3bfe:-tlrqmome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different alveoli strucq-3bm8nlarenf -9 t p:tures.


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)3qqev uv+ :wl:v 1+u 3w-qkq *aclipm cells are not used in the treatment of 3v)q *q w-qqc:u+wlpel imvk: +v13ualeukaemia?

  The table shows the diameters of zppw dd/ m7;;cprz ps8 r(5we-red blood cells from different organisms. Which red blood cell will have the highes(wr5zp-pscdwpezpd8m 7/; r ;t surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells lining the proxim n1l61foss4+qok k /mtal convoluted tubule k4om1oq 6l+ns/k1sft 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 toap.js uoh 7rop5u3 78y1b -zcells and specialised cells is/are not truep.b tj3 -sar7hy1 uoupooz 785?

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 sma27 rpyeaqszu oz -xtiov-+*,a7l6.dj llest to largest?-o t7ysuopra+ 6, dzqlae2xi j-* 7zv.

  Which row in the following table gives the corral*;pf 5j8gtxect disadvantages of the different stem cell sources for thej;a8p5* xfltg rapeutic uses?

1.Describe how the use of stem cells may be use oms 4z4(.g-cn yxo3bzd to treat type I diabetes in the f4om yzs.3(o-n 4gz cxbuture.

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 cel ga 9eg8j5mnrvjzf220pj -p5pls (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.