Biology: Cellular Respiration and Homeostasis

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What is the primary function of mitochondria in cellular respiration?

To generate and use ATP (correct)
To store oxygen for future use
To regulate body temperature
To synthesize proteins

What is the relationship between an animal's metabolic rate and its heat production?

The higher the metabolic rate, the higher the heat production (correct)
There is no correlation between metabolic rate and heat production
The lower the metabolic rate, the higher the heat production
The higher the metabolic rate, the lower the heat production

What is the primary source of oxygen for aquatic animals?

Water (correct)
Food
Air from the atmosphere
Soil

What is the role of ATP in cellular functions?

To power cell functions temporarily (A) Signup and view all the answers

How many mitochondria are typically found in a cell?

More than 1000 (D) Signup and view all the answers

What are the three pathways that generate ATP from food?

Aerobic respiration, anaerobic respiration, and fermentation (A) Signup and view all the answers

Which type of organism relies on its environment to regulate its body temperature?

Ectotherm (A) Signup and view all the answers

What is the primary purpose of vasodilation in thermoregulation?

To increase blood flow to the surface tissues under the skin (A) Signup and view all the answers

What is the term for the temperature range over which an endothermic animal can maintain its metabolic rate and temperature without appreciable change?

Thermal Neutral Zone (C) Signup and view all the answers

What is the primary difference between endotherms and ectotherms?

Endotherms can regulate their body temperature internally, while ectotherms rely on external sources (C) Signup and view all the answers

What is the purpose of vasoconstriction in thermoregulation?

To reduce blood flow to the surface tissues under the skin (D) Signup and view all the answers

What is the critical temperature range beyond which an endothermic animal's metabolic functions and cellular components are disrupted?

Critical Upper or Lower Temperatures (C) Signup and view all the answers

What is the primary function of aerobic cellular respiration?

To release chemical energy to fuel cellular activity (C) Signup and view all the answers

What is the term for the loss of water in the form of vapor, used for cooling down?

Evaporation (A) Signup and view all the answers

What is the role of the hypothalamus in thermoregulation?

To monitor and adjust body temperature (A) Signup and view all the answers

How do endothermic organisms maintain a relatively constant body temperature?

By generating heat through metabolism (D) Signup and view all the answers

What is the direction of heat flow in a temperature gradient?

From warmer to cooler areas (A) Signup and view all the answers

What is the process by which a cell recycles ATP?

By reconstituting ATP from ADP (C) Signup and view all the answers