BSC2085 Lecture Exam 2 UPDATED ACTUAL
Questions and CORRECT Answers
What is the definition of energy in Energy is the capacity to do work or to put matter
the context of living organisms? into motion, existing in forms such as chemical,
electrical, and mechanical.
What does the Law of Conservation Energy is neither created nor destroyed; it is always
of Energy state? transformed.
What are the three states of matter? Solid, liquid, and gaseous.
What are the primary elements that Oxygen (65%), Carbon (18.5%), Hydrogen (9.5%),
compose the human body? and Nitrogen (3.2%).
, What is an atom? An atom is the smallest unit of an element,
composed of protons, neutrons, and electrons.
What are the charges of protons, Protons have a positive charge, neutrons are
neutrons, and electrons? neutral, and electrons have a negative charge.
What is a chemical bond? An energy relationship between the electrons of
reacting atoms, not a physical structure.
What are the types of chemical Ionic bonds, covalent bonds, and hydrogen bonds.
bonds?
What is a cation? A positively charged ion formed when an atom
loses one or more electrons.
What is an anion? A negatively charged ion formed when an atom
gains one or more electrons.
What is a covalent bond? A bond formed when atoms share electrons in a
common orbital.
Which type of chemical bond is the Covalent bonds are the strongest among ionic,
strongest? covalent, and hydrogen bonds.
What are monosaccharides? The simplest form of carbohydrates, consisting of
single sugar molecules.
What are disaccharides? Carbohydrates formed by the combination of two
monosaccharides.
What are polysaccharides? Complex carbohydrates formed by long chains of
monosaccharides.
Questions and CORRECT Answers
What is the definition of energy in Energy is the capacity to do work or to put matter
the context of living organisms? into motion, existing in forms such as chemical,
electrical, and mechanical.
What does the Law of Conservation Energy is neither created nor destroyed; it is always
of Energy state? transformed.
What are the three states of matter? Solid, liquid, and gaseous.
What are the primary elements that Oxygen (65%), Carbon (18.5%), Hydrogen (9.5%),
compose the human body? and Nitrogen (3.2%).
, What is an atom? An atom is the smallest unit of an element,
composed of protons, neutrons, and electrons.
What are the charges of protons, Protons have a positive charge, neutrons are
neutrons, and electrons? neutral, and electrons have a negative charge.
What is a chemical bond? An energy relationship between the electrons of
reacting atoms, not a physical structure.
What are the types of chemical Ionic bonds, covalent bonds, and hydrogen bonds.
bonds?
What is a cation? A positively charged ion formed when an atom
loses one or more electrons.
What is an anion? A negatively charged ion formed when an atom
gains one or more electrons.
What is a covalent bond? A bond formed when atoms share electrons in a
common orbital.
Which type of chemical bond is the Covalent bonds are the strongest among ionic,
strongest? covalent, and hydrogen bonds.
What are monosaccharides? The simplest form of carbohydrates, consisting of
single sugar molecules.
What are disaccharides? Carbohydrates formed by the combination of two
monosaccharides.
What are polysaccharides? Complex carbohydrates formed by long chains of
monosaccharides.
