Bio 202 Exam 1 Review 2024/2025 Exam
Questions and Corresponding Answers
with Surety of 100% Pass Mark
how do hormones promote body homeostasis? - 🧠ANSWER ✔✔by
reacting on/with each other. Hormones released from 1 place can tell other
places to make other hormones. Ie body temperature
what is the difference between the nervous system and the endocrine
system - 🧠ANSWER ✔✔Endocrine system: uses hormones, into the blood,
slow and long lasting
Nervous system: uses NTXs and chemicals, not into the blood, fast
explain negative feedback - 🧠ANSWER ✔✔when there is a change in
homeostasis and signals tell the body to change so it will go back to
normal, once normal again, it will turn off.
List the three types of intercellular communication pathways that enable the
body to maintain homeostasis - 🧠ANSWER ✔✔direct, paracrine, endocrine
communication
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
, direct communication - 🧠ANSWER ✔✔exchange of ions and molecules
between cells across gap junctions; between 2 cells of the same type;
directly touching
paracrine communication - 🧠ANSWER ✔✔uses chemical signals to
transfer information from cell to cell within a single tissue; cells are close
but not touching; synapse
endocrine communication - 🧠ANSWER ✔✔release a hormone in one part
of the body, travels through the blood and finally gets to its destination
hormone - 🧠ANSWER ✔✔a compound that is secreted by 1 cell that
travels through the blood to affect the activity of other cells in the body;
stimulate synthesis of enzymes/structural proteins;
turn existing enzyme/membrane channel on/off
target organ - 🧠ANSWER ✔✔specific cells that possess receptors needed
to bind and "read" hormonal messages
what does the "lock and key" system refer to - 🧠ANSWER ✔✔A hormone
receptor is specific to only one type of hormone. Therefore, if the hormone
doesn't fit in a particular receptor, it won't affect the cell/ organ.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions and Corresponding Answers
with Surety of 100% Pass Mark
how do hormones promote body homeostasis? - 🧠ANSWER ✔✔by
reacting on/with each other. Hormones released from 1 place can tell other
places to make other hormones. Ie body temperature
what is the difference between the nervous system and the endocrine
system - 🧠ANSWER ✔✔Endocrine system: uses hormones, into the blood,
slow and long lasting
Nervous system: uses NTXs and chemicals, not into the blood, fast
explain negative feedback - 🧠ANSWER ✔✔when there is a change in
homeostasis and signals tell the body to change so it will go back to
normal, once normal again, it will turn off.
List the three types of intercellular communication pathways that enable the
body to maintain homeostasis - 🧠ANSWER ✔✔direct, paracrine, endocrine
communication
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
1
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, direct communication - 🧠ANSWER ✔✔exchange of ions and molecules
between cells across gap junctions; between 2 cells of the same type;
directly touching
paracrine communication - 🧠ANSWER ✔✔uses chemical signals to
transfer information from cell to cell within a single tissue; cells are close
but not touching; synapse
endocrine communication - 🧠ANSWER ✔✔release a hormone in one part
of the body, travels through the blood and finally gets to its destination
hormone - 🧠ANSWER ✔✔a compound that is secreted by 1 cell that
travels through the blood to affect the activity of other cells in the body;
stimulate synthesis of enzymes/structural proteins;
turn existing enzyme/membrane channel on/off
target organ - 🧠ANSWER ✔✔specific cells that possess receptors needed
to bind and "read" hormonal messages
what does the "lock and key" system refer to - 🧠ANSWER ✔✔A hormone
receptor is specific to only one type of hormone. Therefore, if the hormone
doesn't fit in a particular receptor, it won't affect the cell/ organ.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
2
PRIVACY STATEMENT. ALL RIGHTS RESERVED
