Q: Q: The binding of complementary bases allows dna molecules to take their well-known shape, called a what? Read this paragraph and choose the correct option from the provided answers: The binding of complementary bases allows DNA molecules to take their well-known shape, called a double helix . Figure below shows how two chains of nucleotides form a DNA double helix. A simplified double helix is illustrated in Figure below . It shows more clearly how the two chains are intertwined. The double helix shape forms naturally and is very strong. Being intertwined, the two chains are difficult to break apart. This is important given the fundamental role of DNA in all living organisms. Choices: - triple helix - single helix - simple helix - double helix A:
A: double helix

Q: Q: What are cations simply named after? Read this paragraph and choose the correct option from the provided answers: The cations are simply named as the parent element. The sodium cation is still called "sodium. " Often, the charge would be attached for clarity, so the sodium cation might be referred to as "sodium one plus. ". Choices: - the scientist - the cell structure - the body part - the parent element A:
A: the parent element

Q: Q: What states that chemical reactions occur when atoms, ions, or molecules collide? Read this paragraph and choose the correct option from the provided answers: Collision theory states that chemical reactions occur when atoms, ions, or molecules collide. In other words, these species need to make contact with one another in order for a reaction to take place. Based on this concept, along with a couple of other key points, collision theory helps to explain why certain factors will influence the rate of a chemical reaction. Choices: - disturbance theory - reaction theory - elemental theory - collision theory A:
A: collision theory

Q: Q: What type of cell transmits electrical impulses in the nervous system? Read this paragraph and choose the correct option from the provided answers: cell that transmits electrical impulses in the nervous system; commonly called nerve cell. Choices: - toxin cell - Large Cell - trace cell - nerve cell A:
A: nerve cell