Which is a factor that determines whether a molecule can cross a cell membrane?
O A. Size
O B. Weight

C. Speed
O D. Color

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

Where substance is produced during cellular respiration