Explain how it is possible to have thousands of different proteins when there are only 20 different amino acids?

What molecule makes up the cell membrane?

Which type of organism contains a cell wall and how does this structure benefit that organism?

Which set of words below could be used to describe the dispersal of seeds to a new region? - wings, legs, migration - nvasive, extic, continental drift - biogeography, adaptation, survival - wind, water, animal feces

What is a similarity between arteries and capillaries?

1. In gerbils, solid-colored fur is a dominant trait (C), and multicolored fur is recessive (c). If a gerbil has the genotype Cc, what is its phenotype?

Which object in our solar system has the greatest density

What is a description of ecosystem

The actions of drugs on neurotransmitter systems can be divided into two main types. what are they?

Where do anticyclones form and Where do cyclones form? And explain how cyclones and anticyclones affect the weather.

I need to know what groups in science only contain in metals