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*The Origin of Life* Know the 7 criteria that must be met if something is to be considered alive. have an organized structure (anatomy) contain chemical reactions coordinated to perform vital functions (metabolism) be able to maintain constant internal environment (homeostasis) react to internal and external stimuli (responsiveness) be able to develop and grow (growth) be able to adapt to environmental changes (adaptability) be able to reproduce/pass on genetic information (reproduction)...

Endomembrane system components 1. Nuclear envelope 2. Endo Reticulum 3. Golgi aparatrus 4. Lysosomes 5. Plasma Membrane 6. Vesicles Endoplasmic Reticulum -extends off the nuclear envelope -a network of membrane bound compartments *rough ER and smooth ER* Exocytosis when a vesicles fuses with the plasma membrane *allows the vesicle to empty its contents into the extracellular space OR to deliver proteins embedded in the vesicle membrane to the plasma membrane* Endocytosis when a vesicles buds...

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Secretion definition - the process of converting an electrical signal (presynaptic neuron) to a chemical signal (synapse) and then back to an electrical signal (post synaptic neuron) Synaptic Activity - allows neurons to communicate with one another What happens in Secretion? - the release of neurotransmitters Neurotransmitters - derived from amino acids (dopamine or norepinephrine) - derived from gas (acetylcholine) - carries chemical signal/messages Vesicle - stores neurotransmitters - tra...

Meiosis Type of cell division that reduces the chromosome number from 2n to n. Daughter cells receive the haploid number Diploid (2n) containing two complete sets of chromosomes, one from each parent. the total number of chromosomes. Haploid (n) cell condition where only one type of chromosome is present Gametes reproductive cells (sperm and egg in animals). usually have the haploid number of chromosomes Zygote diploid cell formed by the production of two gametes; the product of fertilizatio...