Biochemistry Quiz
Preview:
True or False.
All organic molecules must contain carbon.
A. TRUE
B. FALSE
What type of bond is formed between the hydrogen of one water molecule and the oxygen of another?
A. Ionic bond
B. Covalent bond
C. Hydrogen bond
D. Metallic bond
The smallest unit of a substance that retains all of its properties (smallest unit of matter)
A. atom
B. compound
C. molecule
D. cell
What is the monomer of proteins?
A. Nucleotides
B. Amino acids
C. Fatty acids
D. Sugars
Which of the following is an example of a molecule?
A. CaCl2
B. NaCl
C. H2O
D. K
An atom becomes _______ when it loses electrons.
Positive
Negative
Neutral
What is an atom?
A. The smallest basic unit of matter
B. A type of molecule
C. A bond between elements
D. A group of cells
What do two monosaccharides bonded together form?
A. Polysaccharide
B. Monosaccharide
C. Disaccharide
D. Starch
What is the main function of carbohydrates?
A. Biological membrane components
B. Energy storage
C. Cell structures
D. Enzyme catalysts
pH = power of _______________
A. Hydrogen
B. Helium
C. Hafnium
D. Holmium
In a sugar-water solution, Sugar is the _____ and water is the _____
A. Solute, solvent
B. Solvent, solute
C. Solution, solute
D. Solvent, solution
In a chemical equation, where are products typically located?
A. Below the arrow
B. To the right of the arrow
C. To the left of the arrow
D. Above the arrow
Bases release _____ in water.
A. Hydrogen ions (H+)
B. Hydroxide ions (OH-)
Functions of this Carbon Compound:
immunity
movement
nutrition
regulation
structure
transport
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
What are the main function of lipids?
A. Short term energy and hormone production
B. Insulation and pigment production
C. Long term energy and cells structure in the cell membrane
D. Enzyme activity and genetic information storage
Where are starches commonly found?
A. In plant structures
B. In animal structures
C. In potatoes or grains
D. In monosaccharides
What is an element?
A. A compound of different atoms
B. The smallest basic unit of matter
C. One particular type of atom that cannot be broken down
D. A type of chemical bond
What is a good definition for a substrate?
A. A molecule that inhibits enzyme function.
B. A molecule that permanently binds to an enzyme.
C. The specific reactant that an enzyme acts on.
D. The product of an enzyme-catalyzed reaction.
What base does RNA have that DNA does not?
A. uracil
B. thymine
C. cytosine
D. guanine
What are lipids?
A. molecules that include proteins and nucleic acids
B. molecules that include fats, oils, and cholesterol
C. Water-soluble molecules that include glucose and vitamins
D. Organic compounds that include only fats and proteins
Cellulose, Glycogen and Starch are examples of
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
Define a chemical reaction:
A. They dissolve substances into liquids.
B. They change substances into different substances by breaking and forming chemical bonds.
C. They physically mix substances without changing their chemical composition.
D. They heat substances to change their state from solid to liquid or gas.
What is the polymer form of lipids referred to as?
A. Polysaccharide
B. Protein
C. Nucleic acid
D. Triglyceride
What is the atomic number of an element determined by?
A. The number of neutrons
B. The number of protons
C. The number of electrons
D. The sum of protons and neutrons
The building blocks of Nucleic Acids are:
A. Amino acids
B. Fatty Acid and Glycerol
C. Monosaccharides
D. Nucleotides
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