Which example shows an organism that cannot reach homeostasis through internal changes? (1 point)
OA person gets a fever in response to a flu infection
A lizard is cold, and it moves to a sunny rock to warm up.
A dog shivers when it is too cold
Circulation decreases in a bird when it becomes too warm.
A lizard is cold, and it moves to a sunny rock to warm up.
The example that shows an organism that cannot reach homeostasis through internal changes is:
- Circulation decreases in a bird when it becomes too warm.
To determine which example shows an organism that cannot reach homeostasis through internal changes, we need to understand what homeostasis and internal changes mean.
Homeostasis refers to the ability of an organism to maintain stable internal conditions, such as body temperature, pH levels, and blood sugar levels, despite changes in the external environment. Internal changes, on the other hand, are adjustments made by an organism to maintain homeostasis.
Now let's analyze each example:
1. A person gets a fever in response to a flu infection.
Fever is a response of the body to an infection, indicating that the person's immune system is attempting to fight off pathogens. Although the body temperature increases due to this internal change, it is an adaptive mechanism to maintain homeostasis by enhancing the immune response. Therefore, this example does not represent an organism that cannot reach homeostasis through internal changes.
2. A lizard is cold, and it moves to a sunny rock to warm up.
In this case, the lizard detects that it is cold and makes an internal adjustment by moving to a sunny rock to warm up. By doing so, the lizard is able to maintain homeostasis by regulating its body temperature. Hence, this example does not represent an organism that cannot reach homeostasis through internal changes.
3. A dog shivers when it is too cold.
When a dog shivers, it is an involuntary muscle reflex caused by the body trying to generate heat to increase body temperature. This is an internal adjustment made by the dog to maintain homeostasis. Therefore, this example does not represent an organism that cannot reach homeostasis through internal changes.
4. Circulation decreases in a bird when it becomes too warm.
In this example, when a bird becomes too warm, its body decreases blood circulation to reduce heat and maintain homeostasis. This is an internal adjustment made by the bird to regulate its body temperature. Therefore, this example also does not represent an organism that cannot reach homeostasis through internal changes.
Based on the explanations provided, none of the examples show an organism that cannot reach homeostasis through internal changes.