Earth's Interior Along with it's Composition and State of Matter
Molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
B. The bases in DNA in the nucleus. The way our nitrogenous bases are arranged in DNA (A, T, C, and G) code for traits.
Answer:
An arthropod is an invertebrate animal having an exoskeleton like a crab and a centipede.
The immune system works with the digestive tract to help protect you from infection by these potential invaders. Your immune system also depends upon cells to kill invading organisms, and chemicals that don't require the involvement of cells at all, but which are simply toxic to bacteria and viruses. Acid in the stomach does the same thing.
