Question 1 10 pts Many hormones affect homeostasis and often there are two hormo
ID: 282805 • Letter: Q
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Question 1 10 pts Many hormones affect homeostasis and often there are two hormones with opposite effects. What is the advantage of having two hormones with opposite function? O Homeostasis often requires two separate mechanism with opposing effects to keep set parameters. O Having two separate hormones allows homeostasis to have redundant loops, providing multiple paths to the same outcome O The two hormones can work simultaneously and only the stronger one will ultimately have an effect Question 2 10 pts Which of the following is the primary mechanism in which endotherms regulate body temperature? O Moving to areas with lower temperature Spending time in the sun Activate metabolism to increase temperature Orient the body towards heat sources to warm upExplanation / Answer
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Q.1. Many hormones affect homeostasis and often there are tow hormones with opposite effects. What is the advantages of two hormones with opposite function?
Answer: Option B [Having two separate hormones allows homeostasis to have redundant loops, providing multiple paths to the same outcome]. For maintaing homeostasis in body two loops i.e. negative and positive loops work where negative loop maintain homeostasis and positive loop maintain the direction of a stimulus and even can accelerate its effect.
Q.2.Which of the following is the primary mechanism in which endotherms regulate body temperature?
Answer: Option C [Activates metabolism to increase temperature]
Q.3.Bony fishes appeared to have evolved in freshwater and the recolonized marine environments. As a result they are hypotonic to seawater. Which adaptations do bony fishes use in seawater?
Answer: Option C [ Drinks lots of water and actively excrete ions]
Q.4. Water only by osmosis, thus the kidney has to create the osmotic conditions to promote water movement in the direction required. How can the kidney produce hypertonic urine?
Answer: Option A [The kidney has hypotonic regions that make water move out of urine] Kidney absorbs most of the water and ions present in the urine at the interaction of the loop of Henle and its nearby collecting tubule as these regions are hypotonic and reabsorption if water took place which make urine hypertonic
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