c. What is the cellular function? d. What happens if this membrane transport pro

Question

c. What is the cellular function? d. What happens if this membrane transport protein does not function? Oxygen molecules (O_2) move from the lungs into bloodstream, while carbon dioxide (CO_2) molecules move from the bloodstream to the lungs (see Figure 3-2). Use these terms, diffusion, higher, hypertonic, hypotonic, lower Movement of O_2 and CO_2 across the membrane occurs by ___ In this figure O_2 is moving from the ___ to the ___ because the concentration of O_2 in the alveolus is ___, while than in the capillary is ____. Bacteria placed into a high salt or a high sugar (hypertonic) solution also lose water. Discuss how people used this knowledge in the past to preserve food. Name a food preserved with salt. Name a food preserved with sugar.

Explanation / Answer

2.a.They are proteins.

b.Membrane proteins interact with biological membranes and they are of integral amd peripheral.It is also called lipid bilayer protein.

c.It relay the signals between the cells internal amd external environment.

d.If the function doesnot occur the ions and molecules cannot move across cell membranes.

3.a.simple diffusion.

b.hypotonic to hypertonic.

c.increased.

d. decreased.

4.Salt and sugar act to increase osmotic pressure by destroying some bacteria and slowing decay, promote the growth of beneficial bacteria and work together to improve taste.

Foods preserved with salt includes pickles, salted cod, salt cured meat, runner beans,cabbage etc.

Foods preserved with sugar includes corned beef, bacon, sugar cured ham, fruit preserves, jams and jellies etc.

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