QUIZ 1 Flashcards
Are there structural differences between healthy humans and those suffering from diabetes mellitus? “Structural changes” refers to changes at any level of organization in the human body.
Yes. Diabetes is a disease that indicates a disruption in homeostasis (So a disruption with a structure).
Which of the following processes releases stored energy that can be used to power other processes?
A. Allowing a warm system to cool to environmental temperature.
B. Making a beaker warmer than the environment.
A) Allowing a warm system to cool to environmental temperature.
If humans have no control over the movement of uranium, is it possible to maintain uranium homeostasis?
No.
Do humans maintain heart rate homeostasis?
No.
Which of the following requires the expenditure of energy?
A. Maintaining temperature at a steady rate regardless of environmental temperature.
B. Allowing the temperature to always approach environmental temperature.
A. Maintaining temperature at a steady rate regardless of environmental temperature.
Multiple choice: Disrupting the structure of the skin would directly interfere with which of the following processes?
-Moving the arms
- Moving the legs
- Maintaining blood glucose
-Defending against pathogens
- Maintaining steady body fluid levels
- Defending against pathogens
- Maintaining steady body fluid levels
Which of the following is an example of a system at equilibrium?
A. A system in which the internal temperature equals environmental temperature.
B. A system that in which the internal temperature remains steady even when environmental temperature changes.
A. A system in which the internal temperature equals environmental temperature.
A “gradient” occurs when one area is different from another. Which of the following requires the input of energy?
A. Creating a Gradient
B. Allowing two areas to become more similar
A. Creating a gradient
Which of the following RELEASES energy?
A. Creating a Gradient
B. Allowing two areas to become more similar
B. Allowing two areas to become more similar
Is it possible to disrupt the structure of skin cells without disrupting the structure of the skin?
No.
Many choice: Disrupting the structure of the kidney would dramatically interfere with which of the following processes?
- Controlling muscle contraction in the legs
- Maintaining blood sodium levels
-Maintaining body fluids
-Maintaining blood glucose
- Maintaining blood sodium levels
- Maintaining body fluids
Many choice: Humans maintain homeostasis of which of the following variables?
- Blood sodium levels
-Sweat rate
-Heart rate
-Blood glucose
-Dietary sodium intake
-Blood pH
-Blood oxygen levels
- Blood sodium levels
- Blood glucose
- Blood pH
- Blood oxygen levels
Which of the following releases energy that can be used to power other reactions?
A. Moving sodium from an area of low concentration to high concentrations (so that the difference in sodium concentrations becomes greater)
B. Allowing sodium to move from and area of high concentration to low concentration (so that the difference in sodium concentrations becomes smaller)
B. Allowing sodium to move from and area of high concentration to low concentration (so that the difference in sodium concentrations becomes smaller)
Which of the following is an example of homeostasis?
A. Allowing intracellular sodium concentration to equal to extracellular sodium concentration.
B. Maintaining higher extracellular sodium concentrations than intracellular.
(“Extracellular” means outside a cell. “Intracellular” means inside a cell.)
B. Maintaining higher extracellular sodium concentrations than intracellular.
(“Extracellular” means outside a cell. “Intracellular” means inside a cell.)
Many choice: Disrupting the structure of leg muscles would directly interfere with which of the following processes?
- Moving the arms
- Maintaining steady body fluid levels
-Maintaining blood glucose
-Moving the legs
-Defending against pathogens
- Moving the legs
