Homeostasis
What is the process by which organisms maintain a stable internal environment?
Dynamic Equilibrium (is the process to achieve homeostasis)
What are the primary gasses exchanged in the respiratory system?
Oxygen and Carbon Dioxide
What system is responsible for transporting nutrients and oxygen throughout the body?
Circulatory
What are the building blocks of proteins?
Amino acids
What is the first step in the scientific method?
Ask a question/inquiry.
What feedback mechanism is involved in regulating body temperature?
Negative Feedback
What is the name of the process where oxygen is used to break down glucose?
Aerobic Respiration
What is the primary function of the skeletal system?
To provide structure and support.
What type of macromolecule is an enzyme?
Protein
What is a variable that is deliberately changed in an experiment?
Independent Variable IV
What's an example of thermoregulation as a negative feedback loop to maintain homeostasis?
Sweating cools the body down, and shivering generates heat.
What is the process when you are low on oxygen but the body needs to continue cellular respiration? (This can lead to build up of lactic acid, making muscles sore.)
Which system controls and coordinates the body's responses to internal and external stimuli?
Nervous sytem
What type of macromolecule is a primary source of energy for the body?
Carbohydrates
What is the variable that is measured in an experiment?
Dependent Variable DV
What are the two classic examples of positive feedback mechanisms for our class?
Childbirth/labor/delivery of baby and blood clotting.
What is the name of the small air sacs in the lungs where gas exchange occurs?
Alveoli
What system includes the skin and forms the body's outer covering?
Integumentary system
Name the two indicators for carbs.
Iodine detects starch (turns amber to black).
Benedict's solution + heat detects glucose (turns blue to orange/red).
What is a control group?
A group that does not receive the experimental treatment
If our thyroid in our endocrine system is not secreting (releasing) the correct amount of hormones, how does that impact the body?
Hypothyroid means hormone levels are low, slowing down metabolic processes, hyperthyroid means too much hormone is being released, and metabolic processes are too fast. Both disrupt homeostasis and can make you sick without medical intervention.
What are the blood vessels called that run near the alveoli for oxygen to diffuse in and carbon dioxide to diffuse out?
Capillaries
What are the main organs of the digestive system?
Stomach, intestines, liver, pancreas.
Name the indicators for protein and carbon dioxide.
Biuret's indicates protein (turns blue to purple/violet).
Bromothylmol Blue (BTB) detects CO2 (turns blue to yellow - remember breathing into straw activity?)
What is the purpose of a hypothesis in scientific research?
To propose a testable explanation for a phenomenon