Atomic Structure
Which subatomic particle in an atom has a negative charge?
A. Neutron B. Megatron C. Protron D. Electron
What is Electron
When atoms gain electrons, ______________________.
A. Their atomic mass significantly increases B. They become more negatively charged C. They become electrically neutral D. They become more positively charged
What is They become more negatively charged
A substance that is very acidic may have a pH of 1 or 2. This means that the acidic substance:
A. Has a high concentration of H+ (hydrogen) ions
B. Has a high concentration of OH- (hydroxyl) ions
C. Has a low concentration of H+ (hydrogen) ions
D. Has an equal concentration of OH- (hydroxyl) & H+ (hydrogen) ions
What is Has a high concentration of H+ (hydrogen) ions
Which type of lipid is known for storing energy & providing cushioning to organs and thermal insulation to the human body?
A. Phospholipid B. Steroid C. Triglyceride D. Peptide
What is Triglyceride
Which type of organic compound is composed of nucleotides?
A. Carbohydrates B. Proteins C. Nucleic Acids D. Lipids
What is Nucleic Acids
An atom's nucleus contains ___________.
A. Both Protons & Electrons B. Both Protons & Neutrons C. Neutrons only D. Protons only
Both Protons & Neutrons
A ______________ is an ion that has gained electrons & is more _________ charged.
A. Cation; Negatively B. Cation; Positively C. Anion; Positively D. Anion; Negatively
What is Anion; Negatively
Which of the following pH measurements indicates the strongest base?
A. 2 B. 7 C. 13 D. 11
What is 13
Lactose is an example of a ____________ type of carbohydrate.
A. Trisaccharide B. Disaccharide C. Polysaccharide D. Monosaccharide
What is Disaccharide
Which type of nucleic acid contains adenine, guanine, cytosine & thymine?
A. Eicosanoids
B. ATP (Adenosine Triphosphate)
C. DNA (Deoxyribonucleic Acid)
D. RNA (Ribonucleic Acid)
What is DNA (Deoxyribonucleic Acid)
Which subatomic particle in an atom has a positive (+) charge?
A. Megatron B. Neutron C. Proton D. Electron
What is Proton
An ion that loses electrons becomes this type of ion.
A. Cation B. Anion C. Protron D. Megatron
What is Cation
On the pH scale, an acid will have a pH measurement that is _________.
A. Greater Than 7 B. Equal To 7 C. Less Than 7
What is less than 7
Which type of biological molecule acts as enzymes in the body?
A. Lipids B. Proteins C. Nucleic Acids D. Carbohydrates
What is Proteins
Which chemical element accounts for 65% or more of the total body mass of the human body?
A. Carbon B. Hydrogen C. Nitrogen D. Oxygen
What is Oxygen
All elements are composed of smaller building block particles called __________, which are in turn composed of even smaller particles called ___________.
A. Atoms; Isotopes B. Mixtures; Solutions C. Subatomic Particles; Atoms D. Atoms; Subatomic Particles
What is Atoms; Subatomic Particles
Losing electrons results in this type of charge.
A. Neutral Charge B. Positive Charge C. No Change In Charge D. A Negative Charge
What is a Positive Charge
In solution, which component is present in the greatest amount?
A. The Solute B. The Solvent C. The Buffer D. The Precipitate
What is the Solvent
Which type of lipid is known for storing energy & providing cushioning to organs and thermal insulation to the human body?
A. Phospholipid B. Steroid C. Triglyceride D. Peptide
What is steroid
Which of the following is a monosaccharide carbohydrate?
A. Glucose B. Maltose C. Lactose D. Sucrose
what is glucose
Anything that occupies space & has mass is called ___________.
A. Potential Energy B. Solution C. Kinetic Energy D. Matter
What is Matter
Atoms become ions when they do this with electrons.
A. Split Electrons in half B. Gain or lose electrons C. Share Electrons Only D. Ignore Electrons Entirely
What is Gain or lose electrons
A neutral solution has which pH value?
A. 7 B. 0 C. 3 D. 14
What is 7
The two tails of a phospholipid are ________________.
A. carbophilic B. hydrophilic C. hydrophobic D. lipophobic
What is hydrophobic
RNA differs from DNA because it contains which nitrogenous base instead of thymine?
A. Cytosine B. Uracil C. Adenine D. Guanine
What is Uracil