Exam 1 - Chapters 1-3 Flashcards
Anatomy
study of form
Physiology
study of function
Levels of biological organization
- Atom
- Molecule
- Macromolecule
- Organelle
- Cell
- Tissue
- Organ
- Organ system
- Organism
3 principles of cell theory
- All living things are composed of cells
- Cells are the basic units of structure and function in living things
- All cells are produced from other cells.
Anabolic
a building reaction when we build new cells and tissues
(Ex. Body being in a starved state)
Catabolic
How we break down reactions and release energy and use it to move and grow all cellular activity.
(Ex. Your body after a calorie heavy meal)
Afference
Response to stimuli
(Your senses)
Efference
Cellular movement
(Ex. Muscle contracting)
Homeostasis
Maintenance of a relatively constant internal environment
Which type of feedback is more common in maintaining homeostasis?
Negative feedback
Example of Negative Feedback Loop
Blood pressure, Maintaining body temperature
Example of Positive Feedback Loop
Blood clotting, giving birth
Hypertrophy
when individual cells get larger
Hyperplasia
when the number of cells increase
Four main catergories of macromolecles
- Nucleic Acids
- Proteins
- Lipids
- Carbohydrates
Concentration gradient
When chemicals flow Down
What determines the atomic number of an element?
Protons
How do you find mass number
Number of electrons
4 forces/bonds that atoms and molecules can exhibit
- Van der Waals force
- Hydrogen bond
- Ionic bond
- Covalent bond