How can only 20 amino acids form so many different proteins?

What it's possible function for an appendix

The diploid cells that begin spermatogenesis are called spermatogonia. Where are spermatogonia found?

Where do most crustaceans live? in water in soil on rocks in plants

Scientists have worked on the structure of DNA and one of their revelations is the antiparallel arrangement of DNA strands. Which of the following explanations does not go in accordance with the above statement?

Big Bang is an explanation of A. How the sun was formed B. How our galaxy started C. How the universe started D. How the earth was formed

Which characteristic makes legumes a good food source for food-insecure populations? A. They are a source of protein. B. They are a source of fermented sugars. C. They are a source of cereal. D. They are a source of starchy carbohydrates

Why do scientists divide the planets into inner and outer planets

Which is NOT a characteristic of most organelles? A. Lack a surrounding membrane B. Found in animal and plant cells C. Perform a specific function D. Are miniature organs

What are the roles of the axon and dendrite?

Which statement best explains why compounds have different properties than the elements that form them? a. When elements form a compound, the bonds and structure of the elements change. b.