GCU BIO202 EXAM 1 VERIFIED SOLUTIONS
2023/2024
1). Hormones promote body homeostasis
Ans: Hormones react on each other and help keep homeostasis in an organism.
Hormones released from one gland can tell other glands to make different hormones
2). Endocrine system
Ans: -uses hormones
-effects many organs
-is slower and longer lasting
3). Nervous system
Ans: -uses electricity and chemicals
-has a specific effector organ
-faster
4). Neurotransmitter
Ans: a chemical compound released by one neuron to affect the trans membrane
potential of another
5). Hormone
Ans: -A compound that is secreted by one cell and that travels through the bloodstream
to affect the activities of cells in another portion of the body.
-Turn existing enzyme "on" or "off"
6). Negative feedback and its role in regulating blood levels of the various hormones
Ans: -response to changed body condition
-ex. signals tell body to make changes that will bring back to normal level.
-once back to normal, will turn off.
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, 7). Three types of intercellular communication pathways that enable the body to maintain
homeostasis
Ans: -direct communication
-paracrine
-endocrine
8). Direct communication
Ans: occurs between 2 types of the same cell
9). Paracrine
Ans: Most common. uses chemical signals to transfer from cell to cell within single
tissue
10). Endocrine
Ans: slower. release into bloodstream. Alters metabolic activities.
11). Target organ
Ans: specific cells that posessess receptors needed to bind and "read" hormonal
messages
12). Lock and key system
Ans: Hormones fit receptors on "target cells"
13). Three ways in which hormones are classified
Ans: -amino acid derivatives
-peptide hormones
-lipid derivatives (steroid hormones)
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2023/2024
1). Hormones promote body homeostasis
Ans: Hormones react on each other and help keep homeostasis in an organism.
Hormones released from one gland can tell other glands to make different hormones
2). Endocrine system
Ans: -uses hormones
-effects many organs
-is slower and longer lasting
3). Nervous system
Ans: -uses electricity and chemicals
-has a specific effector organ
-faster
4). Neurotransmitter
Ans: a chemical compound released by one neuron to affect the trans membrane
potential of another
5). Hormone
Ans: -A compound that is secreted by one cell and that travels through the bloodstream
to affect the activities of cells in another portion of the body.
-Turn existing enzyme "on" or "off"
6). Negative feedback and its role in regulating blood levels of the various hormones
Ans: -response to changed body condition
-ex. signals tell body to make changes that will bring back to normal level.
-once back to normal, will turn off.
PaperStoc.com Page 1 of 11
, 7). Three types of intercellular communication pathways that enable the body to maintain
homeostasis
Ans: -direct communication
-paracrine
-endocrine
8). Direct communication
Ans: occurs between 2 types of the same cell
9). Paracrine
Ans: Most common. uses chemical signals to transfer from cell to cell within single
tissue
10). Endocrine
Ans: slower. release into bloodstream. Alters metabolic activities.
11). Target organ
Ans: specific cells that posessess receptors needed to bind and "read" hormonal
messages
12). Lock and key system
Ans: Hormones fit receptors on "target cells"
13). Three ways in which hormones are classified
Ans: -amino acid derivatives
-peptide hormones
-lipid derivatives (steroid hormones)
PaperStoc.com Page 2 of 11
