Question

1. Which of the following is a characteristic that is shared by both the Endocrine System and the Nervous System, with regard to communication and coordinating different organ systems?

   		The Endocrine System coordinates physiological responses over shorter timeframes, while the Nervous System sends signals that persist over longer periods.
   		Both utilize the diffusion of chemical messengers and receptor proteins at some stage during their respective processes for relaying information.
   		Neurotransmitters in the Nervous System are similar to lipid-soluble hormones used by the Endocrine System, since they can cross cell membranes to activate intracellular responses.
   		The Endocrine System usually only operates to coordinate cells over short distances, while the Nervous System typically sends signals over long distances.
   		All of the above.

1. Your friend (an endotherm) adopts a 150 kg giant tortoise (an ectotherm) as a pet. Your friend also weighs 150 kg.

   		If your friend has two large heated blankets, only their tortoise can use their heated blanket to keep warm.
   		Both your friend and their pet tortoise need every day to stay healthy and active.
   		If your friend turns down the temperature in their apartment, both your friend and the tortoise will need to eat less calories.
   		Given that they weight the same, your friend will need to eat more calories than the tortoise.

Answer 1

1. both utilize the diffusion of chemical messengers and receptor proteins at some stage during their respective processes of relying information.

-endocrine uses hormones as chemical messengers while nervous system uses electrical neural impulses.

2. Given that they weigh same, friend needs to eat more calories than the tortoise

-this is because an endotherm needs more food to keep their temperature stable for proper metabolism.