Bio Orginasation Flashcards
(25 cards)
What is a group of similar cells that perform a specific function called?
Tissue
What is composed of different types of tissues working together?
Organ
What do you call a group of organs that work together to perform complex functions?
Organ system
True or False: All cells have the same structure and function.
False
What type of tissue connects different parts of the body?
Connective tissue
What is the function of epithelial tissue?
To cover and protect surfaces
Fill in the blank: Muscle tissue is responsible for __________.
Movement
What are enzymes?
Biological catalysts that speed up chemical reactions in the body
True or False: Enzymes are consumed in the reactions they catalyze.
False
What is the active site of an enzyme?
The region where substrate molecules bind and undergo a chemical reaction
What factors can affect enzyme activity?
Temperature, pH, and substrate concentration
Fill in the blank: An increase in temperature generally __________ enzyme activity, up to a point.
Increases
What happens to enzymes at extreme pH levels?
They can denature and lose their functionality
What is a substrate?
The reactant molecule upon which an enzyme acts
Multiple Choice: Which of the following is NOT a factor affecting enzyme activity? A) Temperature B) pH C) Color D) Substrate concentration
C) Color
What is the role of coenzymes in enzyme function?
They assist enzymes by transferring chemical groups or electrons
True or False: Enzymes can be reused multiple times.
True
What is denaturation in the context of enzymes?
The alteration of an enzyme’s structure, leading to loss of function
Fill in the blank: Enzymes are specific to their __________.
Substrates
What is the term for the maximum rate of reaction that an enzyme can achieve?
Vmax
What do we call substances that inhibit enzyme activity?
Enzyme inhibitors
Multiple Choice: Which of the following factors does NOT affect enzyme activity? A) Temperature B) pH C) Pressure D) Enzyme concentration
C) Pressure
What is the primary function of the digestive enzymes?
To break down food into smaller molecules for absorption
Fill in the blank: The __________ model describes how enzymes and substrates interact.
Lock and key
