Class Of Proteins Flashcards
(26 cards)
What are the two main categories of proteins based on their structure?
Globular proteins and fibrous proteins.
True or False: Enzymes are a type of globular protein.
True.
Fill in the blank: Proteins can be classified as __________ based on their function.
structural, transport, regulatory, or enzyme.
What is the primary function of transport proteins?
To carry substances across cell membranes and throughout the body.
Which type of protein is primarily responsible for muscle contraction?
Fibrous proteins.
Multiple Choice: Which of the following is NOT a function of proteins? A) Enzyme catalysis B) Genetic information storage C) Transport D) Structural support
B) Genetic information storage.
What structural feature distinguishes fibrous proteins from globular proteins?
Fibrous proteins have elongated, fibrous structures, while globular proteins are compact and spherical.
True or False: Antibodies are considered globular proteins.
True.
What type of protein is hemoglobin?
A transport protein.
Fill in the blank: Proteins that function as hormones are classified as __________ proteins.
regulatory.
Short Answer: Name one example of a fibrous protein.
Collagen.
What role do enzymes play in biochemical reactions?
They act as catalysts to speed up reactions.
Multiple Choice: Which of the following proteins is primarily structural? A) Myoglobin B) Keratin C) Insulin D) Hemoglobin
B) Keratin.
True or False: All proteins are composed of amino acids.
True.
What is the significance of the tertiary structure in proteins?
It determines the protein’s function and interaction with other molecules.
Fill in the blank: The sequence of __________ determines the specific properties and functions of a protein.
amino acids.
Short Answer: What type of bond stabilizes the secondary structure of proteins?
Hydrogen bonds.
What are the building blocks of proteins?
Amino acids.
Multiple Choice: Which protein is involved in oxygen transport in muscle cells? A) Collagen B) Myoglobin C) Actin D) Albumin
B) Myoglobin.
True or False: Enzymes can be reused in multiple reactions.
True.
What is a key characteristic of enzymes that makes them specific?
Their active site shape matches only specific substrates.
Fill in the blank: __________ proteins help to maintain the shape and structure of cells.
Structural.
Short Answer: Name one function of regulatory proteins.
To control physiological processes, such as insulin regulating blood sugar.
What is the role of antibodies in the immune system?
To identify and neutralize foreign objects like bacteria and viruses.
