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Biology 20- Unit D Exam Questions and Answers 100% Pass
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Biology 20- Unit D Exam Questions and Answers 100% Pass Homeostasis - the process by which the human body maintains a stable internal environment Negative Feedback Loop - when a system is out of balance, this is detected by a sensor, which triggers an effector to change the internal conditions ...

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  • January 8, 2025
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  • 2024/2025
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  • biology 20 unit d exam questions and answers 100

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Biology 20- Unit D Exam Questions
and Answers 100% Pass

Homeostasis - ✔✔the process by which the human body maintains a stable internal environment


Negative Feedback Loop - ✔✔when a system is out of balance, this is detected by a sensor, which triggers

an effector to change the internal conditions to bring the back into the normal range


Macromolecule - ✔✔a large molecule; carbohydrates, lipids, proteins, and nucleic acids


Carbohydrates - ✔✔starches and sugars found in foods, which provide your body's main source of

energy


5 Important Simple Sugars - ✔✔glucose, fructose, galactose, deoxyribose, ribose


3 Polysaccharides Important in Human Nutrition - ✔✔starch, glycogen, cellulose


Proteins - ✔✔complex molecules composed of single units of amino acids


Peptide Chains - ✔✔long chains of amino acids


Lipids (Fats) - ✔✔important energy storage molecule in the body as well as important in the structure

and functions of cell membranes and hormones as they don't dissolve in water


Dehydration Synthesis - ✔✔an enzyme-controlled composition reaction in which compounds are formed

by the removal of water; for each bond formed, another water molecule is produced


Hydrolysis - ✔✔the decomposition of a compound in a reaction by using water; for each bond broken,

another water molecule is required




Author. Emily Charlene, ©2025 All Rights Reserved.

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Enzymes - ✔✔specific types of proteins that help regulate the many different chemical reactions that

occur in your body; proteins that speed up or catalyze chemical reaction


Catalyze - ✔✔to increase the rate of reaction


Substrate Molecule - ✔✔a molecule that an enzyme interacts with chemically


Feedback Inhibition - ✔✔the process by which the accumulated end product of a biochemical pathway

stops the synthesis of that product


Environmental Conditions that Cause an Enzyme to Stop Functioning Properly - ✔✔- denatured by heat


- denatured by low pH


- temperature is too low


Physical Digestion - ✔✔Breaking food down into smaller pieces


Chemical Digestion - ✔✔the process of breaking down large macromolecules into their subunits by

enzymes


Digestion in the Mouth - ✔✔physical breakdown of food by chewing, chemical breakdown of starch by

salivary amylase


Sphincter - ✔✔a ringlike muscular structure that normally maintains constriction of a natural body

passage or orifice and that relaxes as required by normal physiological functioning


Peristalsis - ✔✔the wavelike series of muscular contractions and relaxations in structures such as the

esophagus


Pepsin - ✔✔a digestive enzyme found in gastric juice that catalyzes the breakdown of proteins to

peptides




Author. Emily Charlene, ©2025 All Rights Reserved.

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