7. True or false? a) b) Distilled water has no color andtherefore should NOT abs

Question

7. True or false? a) b) Distilled water has no color andtherefore should NOT absorb Solutions used to pl amphipathic CANNOT pass through the selectively permeable phospholipid plasma membrane permeable phospholipid plasma membranes any visible light ot a standard curve are called standards because their concentrat c) Phospholipids that contain both hydrophobic and hydrophilie ro n and they are used to determine the concentration of an unknown so lution hydrophilic regions are called )lons (example: Nat, K+, CI-) and larve uncharged polar molecules (example glucose) nolecules (example steroids) CAN pass through the selectively 8. Fill in the blanks a) Red pigment in beet root called15 which are located inside surrounded by a membrane called rganic solvents such as acetone and methanol destroy cell membranes because they c) In your experiment there was d) Biological catalysts that lower activation energy of a reaction are called e) dissolve the membrane methanol because acetone is more hydrobphobic than methanol the reactants on which they act are called betacyanin released with acetone compared to and in potato catalyzes the oxidation of catechol to benzoquinone 9. In your experiment with potato extract, if got the highest conversion of 1% catechol to temperature for that enzyme benzoquinone at 40°C then that temperature is called that catalyzes the reaction 10. True or false? When fruit is injured, cells break and release catechol and "enzyme". Catechol and "enzyme" are now exposed to each other which results in formation of benzoquinone which ves brown color to the broken fruit

Explanation / Answer

7.

a. True.

Distilled water has no absorption maxima in the visible light.

b. True

Standards are known values that are used to compare the experimental values.

c. True

Phospholipids contain a polar head and a non-polar tail. they are amphipathic molecules.

d. True

The plasma membrane is impermeable to polar/charged particles.

e. True

Plasma membrane is permeable to small non-polar/uncharged particles.

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