Physiological Regulation and Scaling Quiz

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Which of the following variables is NOT mentioned as part of the internal environment of organisms?

Ions

Water osmolarity

Blood glucose

Temperature (correct)

What is the definition of homeostasis according to Hopkins & Hüner (2009)?

The condition of a relatively stable internal physiological environment, usually involving extensive feedback mechanisms. (correct)

The comparison of a value to a set point.

The coordinated physiological processes which maintain most of the constant states in the organism.

The condition of a relatively unstable internal physiological environment.

What is the main advantage of regulation in maintaining homeostasis?

It is energetically cheap.

It requires mechanisms to cope with variability.

It has a zone of tolerance.

Cells experience constant conditions. (correct)

What is the main disadvantage of regulation in maintaining homeostasis?

It requires mechanisms to cope with variability. Signup and view all the answers

What is the main advantage of conformity in maintaining homeostasis?

It is energetically cheap. Signup and view all the answers

What is the main disadvantage of conformity in maintaining homeostasis?

It has a zone of tolerance. Signup and view all the answers

What is the role of a sensor in homeostasis?

To compare a value to a set point. Signup and view all the answers

What is the role of an effector in homeostasis?

To increase heat loss. Signup and view all the answers

What type of control is used in homeostasis when the body is too hot?

On/off control Signup and view all the answers

What type of control is used in homeostasis when the body is too cold?

On/off control Signup and view all the answers

Which equation represents the relationship between the dependent variable Y and the independent variable X in isometric scaling?

$Y = aX^1$ Signup and view all the answers

What does the equation $LogY = 1LogX + Loga$ represent in the context of scaling?

The transformation of non-linear data to linear data Signup and view all the answers

What does the equation $Y = aX^b$ represent in the context of scaling?

The relationship between body mass and metabolic rate Signup and view all the answers

What does the term 'residual analysis' refer to in the context of scaling?

The analysis of species' positions relative to an allometric line Signup and view all the answers

Which equation represents the scaling of heart mass with body mass?

$Heart\ mass = 0.0059M^{0.75}$ Signup and view all the answers

What does the equation $LogY = bLogX + Loga$ represent in the context of scaling?

The scaling of metabolic rate with body mass Signup and view all the answers

What does the term 'proportionality coefficient' refer to in the context of scaling?

The study of how structural, mechanical, and physiological properties change with changing size Signup and view all the answers

What does the equation $Y = aX^1Omsee$ represent in the context of scaling?

The scaling of metabolic rate with body mass Signup and view all the answers

What does the term 'isometric scaling' refer to?

The direct proportionality between dependent and independent variables Signup and view all the answers

What does the term 'allometric scaling' refer to?

The comparison of scaling exponents or slopes Signup and view all the answers