Which of the following statements about the effect of s: kon7k.aa es4urface area and volume on the cell’aase7n.ko :k4 s processes is false?

  Which statement best describes stemimu 8i0e )cs+g cells?

  Which is a correct description of the cgtds q6 o,8bdwseic8l/xz 3 83ell type adapted for gas exchange in the lung83stcw83z/ ledi6b 8sxgoq ,d s?

  Which of the following explak bj1wiv2 5by2ins the limitations on cell size?

  What is this cell's most likely primary function, and 6w.b09n yuc 87su 2hfvd9rko wwhere could it be located idv bnf8c769h r 9swu y.k2w0oun a mammal?

  Which of the following character: jaai5.r 5iwp ,azu+mistics of type I pneumocytes contribute to increasing the ratu 5ia z5w ja+pma.:ri,e 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 mar1b t)1 zawv1e zhvwdbn7(3q,frow transplant from a 36 year old. One of the functions of these dvtenq awf )11 wz(1bh3z ,7vbcells is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diag,c;mtdk xf,) cjmrg2sgyg4 ++ ram, which identifies cardiac muscle cells and striated muscle fibresc k +jgx4ym+s)mrd,gc2,gf; t?

Below is a diagram of a motor nu6d :4q m;zpjdeuron. Neurons are the longest cells in the human bmdu qz;pd46 :jody.
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 syn2hjxb.cgs09c ,m lwyklk9 0up s ,s31kdrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different alveoli sts0k9y. uskpc0h kw39,2x, sl1cj lbgmructures.


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 followind-6/tp3u zkavg is a reason that embryonic stem cells are not used in the treatment of leupktv- du3/6zakaemia?

  The table shows the diameters of red blood cells from different organismsk3o*(aifx0ertmms5+63 ) 4 buwicmv b. Which red blood cell will have the highestvm3k4ub )r xs(mb36 t mc*w0+5fioiae surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells lining theyop rrq+* ixbz(a. n;5he5j: r proximal convoluted tubule make these cells more adaoq+h b 55izn: pjer yx(;r*.arpted 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 cells ewbi9zb/vjs29 om*2x is/are not trueob9 9bze*v w/2msi2x j?

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 i)nq-dp drrvuiy ( rs2+zk 69z)s the correct order from smallest to largest?y9)nkrdr+ z vu26(d sp rizq)-

  Which row in the following table gives tr7n)ocs39vs cea do 1)he correct disadvantages of the different stem cell sources for nv ds c7)as)3o e1r9octherapeutic uses?

1.Describe how the use of stem cells may be used to treat typh6cx3 )yg2 3me+ mfghae I diabetes in the future.)ch ea632 x +fg3gyhmm

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(3f7 o7vrpkk s (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.