digestive

A substrate binds to the __ site of an enzyme. active enzymatic catalytic reactive

Active

Select all of the processes that occur within the digestive tract. Multiple select question. Pump nutrient-rich blood throughout the body Break down food to access its nutrients Removes undigested waste materials from the body Filter out wastes from the bloodstream Provides nutrients and water to the body

Break down food to access its nutrients Removes undigested waste materials from the body Provides nutrients and water to the body

Enzymes function to ______________________(raise/lower) the activation energy of chemical reactions, allowing them to proceed _______________________(more/less) rapidly.

lower; more

digestive system

maintains homeostasis within the body

The purpose of the digestive system is to allow _____ to be broken down into _____ that can then be used elsewhere in the body. monomers; polymers nutrients; water water; nutrients polymers; monomers

polymers; monomers

Most digestive enzymes are Multiple choice question. carbohydrates. nucleic acids. lipids. proteins.

protiens

During a chemical reaction catalyzed by an enzyme, the enzyme specifically acts on the _____ to form _____. Multiple choice question. metabolites; products monomers; polymers products; reactants substrate; products

substrate; products

In order for a chemical reaction to occur, an energy "speed bump" between reactants and products is needed. This "speed bump" is referred to as Multiple choice questions. the energy of the reaction. catabolic reaction requirements. the energy of activation. required catalytic energy.

the energy of activation.

The inner surface of the small intestine is covered with small, fingerlike projections called Multiple choice question. villi. circular folds. lacteals. blood capillaries.

villi.

Accessory organs associated with the human digestive system are the salivary glands, pancreas, gallbladder, and _________________

Liver

Which of the following organs are responsible for producing and storing bile to assist in lipid digestion? Multiple choice question. Liver and pancreas Small and large intestines Salivary glands and the mouth Liver and gallbladder

Liver and gallbladder

Which of the following enzymes work to break down carbohydrates within the digestive system? Select all that apply. Trypsin Lipase Maltase Peptidase Amylase

Maltase Amylase

Select all of the following organs that are those of the digestive system and NOT accessory organs. Multiple select question. Mouth Esophagus Small intestine Liver Salivary glands Stomach Gallbladder Large intestine Pancreas

Mouth Esophagus Small intestine Stomach Large intestine

Which of the following organs are part of the digestive system? Multiple choice question. Trachea, bronchi, and lungs Pancreas, liver, and gallbladder Kidney, ureters, bladder, and urethra Brain, spinal cord, and all nerves

Pancreas, liver, and gallbladder

Liver

Produces bile to assist in lipid digestion; processes and stores many different forms of nutrients

Pancreas

Produces digestive enzymes for use in the small intestine; assists in the regulation of blood glucose levels

Which class of energy nutrients do most digestive enzymes belong to? Multiple choice question. Lipid Polysaccharide Monosaccharide Protein Disaccharide

Protein

Select the methods that are used by the body to regulate the function of enzyme activity within the digestive system. Multiple select question. Providing an optimal environmental pH for the necessary enzyme(s) Changing the temperature of the body to prevent enzyme functioning Providing an optimal environmental temperature for the necessary enzyme(s) Sending the immune system to deactivate enzymes when they are no longer needed

Providing an optimal environmental pH for the necessary enzyme(s) Providing an optimal environmental temperature for the necessary enzyme(s)

Which of the following accessory organs is responsible for lubricating food for mechanical digestion, as well as providing enzymes to begin carbohydrate digestion? Multiple choice question. Liver Pancreas Salivary glands Gallbladder

Salivary glands

Which of the following are accessory organs associated with the human digestive system? Multiple choice question. Mouth, esophagus, stomach, small intestines, and large intestines Kidneys, ureters, bladder, and urethra Salivary glands, pancreas, liver, and gallbladder Stomach, small intestines, and large intestines

Salivary glands, pancreas, liver, and gallbladder

Which of the following groups of organs are considered accessory organs? Multiple choice question. Salivary glands, pancreas, liver, and gallbladder Mouth, esophagus, stomach, small and large intestines

Salivary glands, pancreas, liver, and gallbladder

Select all of the following organs that are a part of the digestive system. Multiple select question. Stomach Heart Mouth Thyroid gland Pineal gland Small intestine

Stomach Mouth Small intestine

Gallbladder

Stores bile until needed by the small intestine

True or False: The role of digestive enzymes is to break down carbohydrates, proteins, and lipids into smaller molecules that can be used elsewhere in the body.

True

Substrates bind to the ________________ site of an enzyme.

active site

After digestion, small monosaccharides are absorbed into _____ and transported throughout the body for use. lymphatic capillaries lacteals interstitial fluid blood capillaries

blood capillaries

mouth

breaks up food by mechanical

Within the villi of the small intestine are _____, which link the small intestine to the circulatory system, and _____, which transport fat-soluble molecules to the lymphatic system. Multiple choice question. capillaries; lacteals hepatic ducts; bile ducts circular folds; vessels lacteals; capillaries enzymatic ducts; bile ducts

capillaries; lacteals

small intestine

contains small projects called villi

Each reaction in a metabolic pathway is catalyzed by a(n) reactant. substrate. ATP molecule. enzyme.

enzyme

Protein molecules that speed up, or catalyze, chemical reactions are called

enzymes

True or False: Enzymes are used up in chemical reactions, so a steady supply is needed.

false

The activity of most enzymes and metabolic pathways within the digestive system is regulated by biofeedback loops. feedback inhibition. thermoregulation. osmoregulation.

feedback inhibition.

The regulating process where the product of an enzymatic pathway has the ability to temporarily turn off enzyme activity is called enzyme regulation. enzymatic inactivation. feedback inhibition.

feedback inhibition.

organ system

group of organs that work together to perform a specific function

True or False: Enzymes will work efficiently, regardless of environmental conditions.

False

True or False: Once an enzyme is used to catalyze a chemical reaction, it cannot be used again in other reactions.

Fasle

Which of the following is one of the main functions of the digestive system? Multiple choice question. Transporting nutrients throughout the body Ingesting nutrients and breaking them down into smaller molecules that can be used elsewhere for life processes Sending chemical messages throughout the body to control life processes Filtering wastes from blood and releasing them from the body

Ingesting nutrients and breaking them down into smaller molecules that can be used elsewhere for life processes

Which of the following best describes an organ system? Multiple choice question. All of the organs in a specific location of the body A group of tissues that work together to accomplish a common goal A group of organs that work together to accomplish a common goal A group of cells that work together to accomplish a common goal

A group of organs that work together to accomplish a common goal

Which organ is responsible for receiving food from the esophagus and storing it while mixing it through rhythmic muscle contractions? Multiple choice question. The small intestine The stomach The gallbladder The large intestine

The stomach