25 Questions
What are the four classes of molecules found in living organisms?
Carbohydrates, Lipids, Proteins, and Nucleic Acids
What is the fourth class of molecules found in living organisms, along with Carbohydrates, Lipids, and Proteins?
Nucleic Acids
Which of the following molecules are not one of the four classes found in living organisms?
Vitamins
What is the class of molecules that includes DNA and RNA?
Nucleic Acids
Which of the following is NOT a type of molecule found in living organisms?
Minerals
What is the typical characteristic of most animal fats?
Saturated
What is the typical characteristic of plant fats?
Unsaturated
What is the typical characteristic of fish fats?
Unsaturated
What is the name of the animal fat that is commonly used in cooking?
Lard
What is the general term for fats and oils?
Lipids
What is the result of muscle contraction?
The length of the muscle shortens
What is the shape of epithelial cells?
Polyhedral or rectangular
What is the function of epithelial cells?
To form sheets for protection and absorption
What happens to the muscle cell during muscle contraction?
It becomes shorter
What is the role of epithelial cells in the body?
To protect the body and facilitate absorption
What is the composition of the two membranes enclosing the organelle?
Phospholipid bilayer
What is the characteristic of the outer membrane of the organelle?
Smooth
What are the infoldings of the inner membrane called?
Cristae
How many membranes does the organelle have?
Two
What is the function of the cristae in the organelle?
To increase the surface area for cellular respiration
What is the primary purpose of the G1/S checkpoint?
To evaluate the cell's size and environmental conditions
What happens if the environment is favorable at the G1/S checkpoint?
The cell proceeds to the S and M phases
What is evaluated during the G1/S checkpoint?
Growth factors, nutritional state, and cell size
What is the outcome if the cell does not receive a go-head signal at the G1/S checkpoint?
The cell cycle is halted
What is the significance of the G1/S checkpoint in the cell cycle?
It ensures the cell's ability to respond to environmental cues
Test your knowledge of the four main classes of biomolecules found in living organisms. Learn to identify and distinguish between carbohydrates, lipids, proteins, and more. Get ready to learn about the building blocks of life!
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