A student investigated the diffusion of substances through Viking tubing, an artificial membrane
which has some of the properties of cell membranes.
The student made a bag of Visking tubing as shown in Fig. 4.1. The student added some iodine solution to the water in the test-tube
After 30 minutes at room temperature, the contents of the Viking bag were stained blue-black, but
the water outside remained a yellow colour

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants