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BIO 50A

QuestionAnswer
The plasma membrane is selectively permeable, meaning: It controls what enters and exits the cell
Which organelle produces energy for the cell? Mitochondria
Carbohydrates are composed of Simple Sugars
Proteins are primarily made of Amino Acids
Lipids are characterized by Long chains of carbon and hydrogen
Nucleus Controls cell activities and contains DNA
Rough Endoplasmic Reticulum site of protein synthesis
Golgi Apparatus Modifies and packages proteins
Lysosomes Breaks down waste materials
Cytoskeleton Network that provides cell shape and movement
What are the two functions of the plasma membrane? Controls what enters/exits the cell; provides protection and communication
Explain why glucose cannot freely pass through the lipid bilayer. Glucose is polar and requires transport proteins to cross the membrane
Describe the function of mitochondria in the cell. Produces energy (ATP) for cellular activities
What is the role of ribosomes? Makes proteins from amino acids instructions
Define selective permeability Selective permeability means only certain substances can cross the membrane
Define macromolecule and list the four major types Large organic molecules; carbohydrates, proteins, lipids, nucleic acids
What is the primary function of carbohydrates? Long term energy storage; insulation; cell membranes
What role do proteins play in the body? Build and repair tissues; enzymes; structural support
What is the function of enzymes Speed up chemical reactions
What is the primary function of DNA? Stores genetic information
Name the three parts of a nucleotide. Sugar, phosphate group, nitrogenous base
DNA and RNA are examples of which macromolecule? Nucleic Acids
What does mRNA do in protein synthesis? Carries genetic instructions from DNA for protein synthesis
Created by: user-2029276
 

 



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