Which of the following cuj1 gdu4oo+ go h+*u;statements about the effect of surface area and volume on ouo+g1+h *4 gucd;ujothe cell’s processes is false?

  Which statement best ssati;w1- 1f(vho5z sd+cth+ describes stem cells?

  Which is a correct description of the cell type adapted for gas,xbl+ lce ky,zux0, fm+)a1 zk exchange in the lulz1xb,mkfy kalcx,e ,u0+ z+)ngs?

  Which of the following explains the limitations on cellwmlq.yb+pp+:scd3f *r.w u5j size?

  What is this cell's mi.q.iu y4g rhh6lw5r9;9 4zqfq7ka btet.ku4ost likely primary function, and where could it be located fqi9i ha urh ;6y. zqtur4.tw4k57 9egql k4.bin a mammal?

  Which of the following characteristics1ul 7ypa jjp*1*pjzr- of type I pneumocytes contribute to increasing the rate of gas exchan7 y*prju-jjapp 1z*1lge?
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 frol*as/ km.+wvcvwdg z, 5 en/k*f)tkw0m a 36 year old. One of the functions of these cells is to produce red and whit g/ 0fz,wm+)l tscvwk5 **.aknv/de kwe blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells and str2vo2 9stsot*g :fb /v xwt5jj5a 1jj3siated muscltto/5ovs3a5wt2 sg9bvxj:f 2s1j j j*e fibres?

Below is a diagram of a motovk ss6o/jeo*vx8 j+wuh* (i1r-jrt,ur neuron. Neurons are the longest cells in the humani*, 1/+ (s*o6e juvork8jtsr j wvx-hu 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 yu8y cu 6xx-4arespiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two differen4yxxau- 8y6c ut 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 sti/5(df 2kkbgn(q2vt kem cells are not used in the treatment of leukav idt/gn5kk f(q( 2k2bemia?

  The table shows the diameters of red blood cells from different org;wbih* ,ww;q wy.g2cmj si z)7anisms. Which red blood cell will have the highest surface area to vol7*,)w g;yb;iwczj2w q .mwihsume ratio?

1.Explain how the shape of erythrocytes and cells linikk y9-hmj2p8 pj,(sy2 zzxxx-ng the proximal convoluted tubule make these cells more adap-mjxzk- 9syxp8xzpj ,(22k yhted 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 embryonicld i; dddoe6v) i/t)g8 stem cells and specialised cells is/are not true? gdo)d;)8l d6ei/i tvd

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 to largesx4ku6is r ok2 +.urn-yt?xr2- 64rik.s o+uykun

  Which row in the following table gives the correct disadvantages of the difev0p3uquqit9 gs9 o (u:t,m:fferent stem cell sgqu p 3o9 90sufit:vtem,:u(qources for therapeutic uses?

1.Describe how the use of n9:m ny5jbt5 kstem cells may be used to treat type I diabetes in the future. 9nyjb m5:t5nk

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 specialisb 9nm4qd,jo (ied 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.