The diagram is a drawing from an electron micrograph of a typical animal cell. How many layers of phospholipids will a molecule of oxygen cross to travel directly from X, outside the cell, to $$$Y$$$, the matrix of the mitochondrion?

Biology

IGCSE&ALevel

CAIE

Exam No：9700_w18_qp_12 Year：2018 Question No：16

Answer:

Knowledge points:

4.2.1 describe and explain the processes of simple diffusion, facilitated diffusion, osmosis, active transport, endocytosis and exocytosis

4.2.2 investigate simple diffusion and osmosis using plant tissue and non-living materials, including dialysis (Visking) tubing and agar

4.2.3 illustrate the principle that surface area to volume ratios decrease with increasing size by calculating surface areas and volumes of simple 3-D shapes (as shown in the Mathematical requirements)

4.2.4 investigate the effect of changing surface area to volume ratio on diffusion using agar blocks of different sizes

4.2.5 investigate the effects of immersing plant tissues in solutions of different water potentials, using the results to estimate the water potential of the tissues

4.2.6 explain the movement of water between cells and solutions in terms of water potential and explain the different effects of the movement of water on plant cells and animal cells (knowledge of solute potential and pressure potential is not expected)

The diagram is a drawing from an electron micrograph of a typical animal cell. How many layers of phospholipids will a molecule of oxygen cross to travel directly from X, outside the cell, to $$\(Y\)$$, the matrix of the mitochondrion?

Answer:

Knowledge points:

Solution:

The diagram is a drawing from an electron micrograph of a typical animal cell. How many layers of phospholipids will a molecule of oxygen cross to travel directly from X, outside the cell, to $$\(Y\)$$, the matrix of the mitochondrion?

Answer:

Knowledge points:

Solution:

Related Question