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Jordyn Johnson
Physiology Weeks 1-6
| Question | Answer |
|---|---|
| Homeostasis? | Process by which the body maintains a stable internal environment despite changes in the external environment. |
| Biomolecules? | Essential molecules of life (carbohydrates, lipids, proteins, and nucleic acids) that provide energy, structure, and genetic information for cells. |
| Function of DNA? | Contains the genetic code that directs protein synthesis and controls cell growth, repair, and reproduction. |
| Function of cell membrane? | Controls what enters and leaves the cell, helps maintain homeostasis, and provides structure and communication through embedded proteins. |
| Fluid mosaic model? | Describes the cell membrane as a flexible phospholipid bilayer with moving proteins, allowing for selective permeability and cell signaling. |
| Three main phases of the cell cycle? | Interphase (cell growth and DNA replication), mitosis (cell division), and cytokinesis (cytoplasmic division). |
| Four tissue types? | Epithelial tissue, connective tissue , muscle tissue, and nervous tissue. |
| Primary function of skeletal system? | Supports the body, protects the organs, produces blood cells, stores minerals like calcium, and provides attachment for muscles. |
| Axial vs. appendicular skeletons? | Axial skeleton includes the skull, vertebral column, and rib cage for protection and support, while the appendicular skeleton includes the limbs for movement. |
| Role of actin and myosin during muscle contraction? | Myosin heads attach to actin filaments and pull them inward using ATP, shortening the muscle fiber and causing contraction. |
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jordynjohnson
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