Question

question 1
what is the primary goal of homeostasis in an organism?
to keep all internal variables at exactly the same value at all times
to allow internal conditions to change freely with the environment
to maintain internal variables within a stable range so the organism can survive and function
to increase energy use in all cells

question 2
which of the following is an example of a homeostatic response to a perturbation?
producing atp in the mitochondria
sweating when body temperature rises
transcribing dna into rna
translating rna into protein

Explanation:

Analyze Question 1

The first question asks for the primary goal of homeostasis in an organism. Homeostasis is the process by which physiological systems maintain a state of dynamic equilibrium. It does not keep variables at a single, static value at all times, nor does it allow them to change completely freely with the environment. Instead, it regulates internal conditions within a narrow, stable range compatible with life and proper cellular function.

Analyze Question 2

The second question asks for an example of a homeostatic response to a perturbation (a disturbance or change in the environment). Sweating when body temperature rises is a classic physiological mechanism of thermoregulation. When external heat or exercise raises the internal temperature, the nervous system triggers sweat glands to release moisture, which cools the body through evaporation, returning the temperature back toward its set point. Other options like ATP production, transcription, and translation are fundamental metabolic and molecular processes, but they are not direct corrective feedback responses to an external perturbation.

Answer:

Question 1

• To keep all internal variables at exactly the same value at all times
• To allow internal conditions to change freely with the environment
• To maintain internal variables within a stable range so the organism can survive and function (Correct answer)
• To increase energy use in all cells

Question 2

• Producing ATP in the mitochondria
• Sweating when body temperature rises (Correct answer)
• Transcribing DNA into RNA
• Translating RNA into protein