While water molecules are polar, they are also very small. One fact not mentioned in the video is that some (but not most) water molecules are able to squeeze directly through the phospholipid bilayer due to their small size. This is an example of which of the following?

simple diffusion

active transport

facilitated diffusion

In figure 1-2 what is the distance from point b to point c?

The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.

How do energy and matter move through an ecosystem? both energy and matter unidirectionally flow through an ecosystem. both energy and matter cycle within an ecosystem. matter unidirectionally flows through an ecosystem, whereas energy cycles within an ecosystem. energy unidirectionally flows through an ecosystem, whereas matter generally cycles within an ecosystem.