Which of the following stateme0bys pubg *on5,wm7 -,: z1nwwn v(kzents about the effect of surface area and volume on the wm,nuy-1nnvp 5:gz 7*b kso0zeww b(,cell’s processes is false?

  Which statement best descz3mek4q* v p6sfo;s -tribes stem cells?

  Which is a correct description of the cell type adapted for gnk55 keij vw(-;huf/ras exchange in the lungs;ievk jr 5kw-5u(n /fh?

  Which of the following explains the limitations otyvbqj8yq-2 )5a cgr6n cell size?

  What is this cell's most likely primi) /77er e8w14uybw/tq w qkhzary function, and where could it be located in a ma7ew/zu r b/1)i kwyqqeth47w8mmal?

  Which of the following characteristics of type I pneumocy0fis4 n705u3m q jitgf3cev8stes contribute to increasing the rate of gas exchang785 ffet0 0 njusvg 3cim34siqe?
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)oih(g. +x ynlexgo d(6lth1/ . One of the functions of these cells is to produce red and white blood cells. What type of sgh(x)n(ol t1ld6e y+ox/ghi .tem cells has the patient received?

  Based on the Venn diagram, wh/ko etw .s0hf75d ll)cw c2s;vich identifies cardiac muscle cells and striated muscle fi ;5 lfd c/w)lt7os hcv2ke0.wsbres?

Below is a diagram of a motor neu2ci hb, 9f2weig8wy *todc.d7ron. Neurons are the longest cells in the human bod i8hcw.dbc*f7 dgy22w 9oeit,y.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes sufeo)k1-k4snw7 0ns p mwz/v0 r :-xvbswfer from infant respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different we- 10on0 v/sks pwr- nvk)m bwzsx4:7alveoli 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 thattd 0q2gy0d:w9k h (mge embryonic stem cells are not used in the treat:dkhge ty0w9dq02m g( ment of leukaemia?

  The table shows the diameters of red blood cells from different o vzzb68,a/rlpojs .i6iti4j4( neul-rganisms. Which red blood cell w/ep6iia8vzz.4n6u l ojb4( ir js,t-lill have the highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells lini dojxhy(k3 5+fng the proximal convoluted tubule make these cells more adaptedh3x of yjk5(d+ 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 is/a3:jnanqzu9bo ru)) )ure not trubar)3uu:ouz9j n n)) qe?

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 smallxuzzg,).cho ar2.a ;jsvl(z; est to largest?au rl,o;j) s. v2 xhzg;za(zc.

  Which row in the following tablvm/ i-if (rwe0e gives the correct disadvantages of the different stem w/mreiv(-0if cell sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetp b(3 jvyr/vy6es in the futu v (rvpyb6/3yjre.

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 specialis 8h1fc; mjfrl i8jrsdt:r(08m1 +lz hhed 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.