BIOL 100 Lecture Notes - Lecture 2: Atomic Mass, Atomic Number, Homeostasis

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Growth: the process of increasing in size. Reproduce: the process of producing new organisms. Homeostasis: the maintenance of a relatively constant internal environment. Sense and respond to stimuli: the process of reacting to their environment. Ability to obtain & use energy: allowing them to work: chemistry: Atomic number- # of protons determine which atom it is. Electrons- determine what an atom can bond to: matter: anything that takes up space and has mass. Ex: a carbon atom has 6 neurons: carbon is a key component of life"s molecule: Second most common element that we have in the human body: 6 elements that make up most of humans, oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, carbon has 6 electrons: Needs 8: covalent bonds: atoms shared between electrons, organic molecules contain c-c and c-h bonds: Organic molecules form when carbon atoms are covalently bond to other carbon and hydrogen atoms: carbon:

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