PLTW-HBS Unit 3 QUESTIONS AND ANSWERS, 100% ACCURATE, GRADED A+
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PLTW-HBS
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PLTW-HBS
PLTW-HBS Unit 3 QUESTIONS AND ANSWERS, 100% ACCURATE, GRADED A+
Homeostasis - -The maintenance of relatively stable internal physiological conditions (as body temperature or the pH of blood) in higher animals under fluctuating environmental conditions.
Macromolecule - -A very large molecule...
graded a homeostasis the maintenance of relatively stable internal physiological conditions as body temperature or the ph of blood in high
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PLTW-HBS Unit 3 QUESTIONS AND
ANSWERS, 100% ACCURATE, GRADED
A+
Homeostasis - ✔✔-The maintenance of relatively stable internal physiological conditions (as body
temperature or the pH of blood) in higher animals under fluctuating environmental conditions.
Macromolecule - ✔✔-A very large molecule (as of a protein, nucleic acid, or carbohydrate) built up from
smaller chemical structures.
Resource - ✔✔-A natural feature or phenomenon that enhances the quality of human life.
Adenosine Triphosphate (ATP) - ✔✔-An adenine-containing nucleoside triphosphate that releases free
energy when its phosphate bonds are hydrolyzed. This energy is used to drive endergonic reactions in
the cell.
Anabolism - ✔✔-Synthetic, energy-requiring reactions whereby small molecules are built up into larger
ones.
Basal Metabolic Rate (BMR) - ✔✔-The rate at which heat is fiven off by an organism at complete rest.
Body Mass Index (BMI) - ✔✔-A measure of body fat that is the ratio of the weight of the body in
kilograms to the square of its height in meters.
Bolus - ✔✔-A soft mass of chewed food.
Calorie - ✔✔-The amount of heat energy required to raise the temperature of 1 g of water by 1 degree
Celsius. The Calorie (with a capital C), usually used to indicate the energy content of food, is a kilocalorie.
, Catabolism - ✔✔-Chemical reactions that break down complex organic coumpounds into simple ones,
with the net release of energy.
Digestion - ✔✔-The process of making food absorbable by mechanically and enzymatically breaking it
down into simpler chemical compounds in the alimentary canal.
Digestive System - ✔✔-The bodily system concerned with the ingestion, digestion, and absorption of
food.
Enzyme - ✔✔-A protein serving as a catalyst, a chemical agent that changes the rate of reaction without
being consumed by the reaction.
Esophagus - ✔✔-A muscular tube that in adult humans is about nine inches (23 centimeters) long and
passes from the pharynx down the neck between the trachea and the spinal column and behind the left
bronchus where it pierces the diaphragm slightly to the left of the middle line and joins the cardiac end
of the stomach.
Gallbladder - ✔✔-A membranous muscular sac in which bile from the liver is stored.
Gastrointestinal Tract - ✔✔-The stomach and intestines as a functional unit.
Large Intestine - ✔✔-The more terminal division of the vertebrate intestine that is wider and shorter
than the small intestine, typically divided into cecum, colon, and rectum, and concerned especially with
the reabsorption of water and the formation of feces.
Liver - ✔✔-The largest organ in the vertebrate body; performs diverse funcitons such as producing bile,
preparing nitrogenous wastes for disposal, and detoxifying poisonous chemcials in the blood.
Metabolism - ✔✔-The totality of an organism's chemical reactions, consisting of catabolic and anabolic
pathways.
Monomer - ✔✔-A molecule that can combine with others to form a polymer.
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