Exam (elaborations)
Bio 127 - Exam 1 Study Guide Questions And Answers Latest Update
- Course
- HUMBIO 127
- Institution
- Stanford University
Bio 127 - Exam 1 Study Guide Questions And Answers Latest Update
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Solution 2024/2025Pepper
Bio 127 - Exam 1 Study Guide Questions And
Answers Latest Update
Prions
infectious protein particles
Vectors
Something that introduces an infection into your body (ex. tick)
Types of Diseases
Degenerative, Nutritional, Metabolic and Immune
Degenerative Disease
- involves tissues breaking down
- age can cause this disease, or an infection can cause this
Nutritional Disease
- not enough or too much of something
- hemochromotosis (too much iron) -> causes degenerative diseases
Metabolic Disease
- Diabetes
Immune Disorders
- Autoimmune disorders
- Immunodeficiency disease
- Allergies
Neoplasms
cancers, tumors
Healthy people share certain bodily constants
, Solution 2024/2025
Pepper
1) Not too hot or cold: a body temp of around 37 degree celsius.
2) Not too acidic; not too alkaline in blood pH of near 7.4.
3) A blood glucose concentration of about 100mg/mL
4) A blood pressure of about 120/80 mm Hg
5) Respiration of 12-20 breaths/min
Dynamic Equilibrium
Not all these things have to be constant however a healthy body will be able
to bring the body back if it deviates from those levels.
Negative Feedback
- when a change in one direction "feeds back" to the input to reverse the
direction of the change in the output (like a thermostat).
Need:
1) Detector -> body's temperature sensors
2) Effector -> blood vessels and sweat glands in skin
Homeostasis
the dynamic constancy of the internal environment despite constant
changes in the external environment.
Infections
Invasions of the body
Infection vs Infestation
Infection: is the invasion of microorganisms that causes a disease to the
host.
Infestation: is the invasion of insects and worms that causes a disease to
the host.
Bacteria vs Viral
- Bacteria are single-cell organisms that can live and reproduce freely. They
have genetic material to pass on their genes.
- Viral can only reproduce inside a living cell (not their own).
Virus
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