B. A student investigated the diffusion of substances using a Visking tubing, an artificial membrane which has some of the properties of cell membranes as
shown below.
elastic
band
top of syringe
test tube
starch solution
Bag filled with starch
solution and placed into
a test-tube of water
water
Visking
bag
knot
The student added some iodine solution to the water in the test tube.
After 30 minutes at room temperature, the contents of the Visking bag were
stained blue-black, but the water outside remained a yellow colour.
i. Explain the results.

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

(me out over the last several centuries, scientists have made the following broad observations while investigating several branches of the life sciences: -the fossil record shows that different types of organisms have existed at different times in earth's history. -many organisms have similar body structures that seem to be adapted to different ways of living in their environment. -organisms of different species often share similarities in stages of embryonic development. -many species share genetic similarities, and almost all organisms use the same basic building blocks to construct proteins. -often, the extent of two species' similarities can be predicted from their geographic closeness to each other. -a great deal of change has been observed among species that have experienced strong selective pressures through many generations. scientists have carefully considered and rigorously tested the observations listed above. when scientists offer a of these observations, they are making 1.) testable explanation, deductive explanation 2.) scientific interference, scientific law

How much does one sucrose molecule weigh in grams?