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Biology 2-3

QuestionAnswer
What are the four principal classes of organic compounds found in living organisms? Carbohydrates, lipids, proteins and nucleic acids
Describe the proportion of Carbon, Hydrogen, and Oxygen that make up Carbohydrates. 1:2:1
Glucose and fructose are examples of what? monosaccharides
Give an example of a disaccharide. Sucrose or table sugar
Why are polysaccharides important for organisms? They are the storehouse and they store energy
What is the function of cellulose in plants? It provides structural support for plants.
Give 3 examples of lipids and the role they play for organisms. Fats, phospholipids, and steroids. Fats - lipids that store energy. Phospholipids - make up the lipid bilayer of cell membranes. Steroids - include cholesterol, which is found in animal cell membranes.
What is the difference between saturated and unsaturated fat? Saturated fats are solid at room temperature, and unsaturated fats are liquid at room temperature.
What is a protein? A chain of molecules called amino acids linked together.
How many amino acids are found in proteins? 20
Give three roles that proteins play in organisms. Promote chemical reactions, help your body defend infection, enable your muscles to contract making body movement possible.
What are the parts of a nucleotide that make up nucleic acids? Sugar, base and a phosphate group
Differentiate between the structure of DNA and RNA. DNA has two strands of nucleotides, and RNA has one strand of nucleotides.
What is ATP and what does it do? Adenosine triphosphate, a single nucleotide with two extra energy-storing phosphate groups, and it is the main energy currency of cells.
Created by: user-1991880
 

 



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