1- Which of the following would be classified as a monosaccharide?
2- Which of the following is an important storage compound for sugar in animals?
3- Amino acids are linked together to form long, chainlike polymers by what kind of bond?
A). Ionic bonds
B). Hydrogen bonds
C). Peptide bonds✔️
D). Carbon to carbon covalent bonds
4- Which of the following is not a property of water?
A). High specific heat
B). High heat of vaporization
C). Unique density behaviour
D). Greatest density at 0⁰ C✔️
5- Organisms that can synthesized their food from inorganic sources using light or another source of energy are called…..
B). Primary heterotrophs
D). Oxidative autotrophs
6- Our atmosphere today can be described by which of the following terms?
A). Strongly reducing
B). Strongly Oxidizing✔️
C). Strongly phosphorylating
D). Weakly reducing
7- Which of the following are believed to have been responsible for generating the first atmospheric oxygen early in life’s history?
A). Heterotrophic bacteria
D). Eukaryotic unicells
8- DNA can currently be found in which of the following structures or organelles?
D). All of the above contain DNA✔️
9- The amount of matter in an object is referred to as its:
C). Atomic number
D). Atomic mass
10- Which of the following does not contribute to the majority of an animal’s weight?
11- The atomic mass of an element is equal to the number of___ and ___ in the nucleus of one of its atoms.
A). Neutrons and protons✔️
B). Protons and electrons
C). Electrons and neutrons
D). Isotopes and neutrons
12- The atomic number of an element is the number of___ in its nucleus.
13- If a substance can be broken down into two or more chemical elements, it is a:
14- Which of the following is not a type of chemical bond?
15- When elements share outer- shell electrons with other atoms, the chemical bond that forms is a:
A). Ionic bond
B). Hydrogen bond
C). Covalent bond✔️
D). Elemental bond
16- __ bonds form when an atom or group of atoms develops an electrical charge and attracts an atom or group of atoms with an opposite charge.
D). Nonpolar covalent
17- Which of the following is an electrolyte?
18- Distilled water has a pH of:
19-Which of the following is not a definition of pH ?
A). pH= – log [H+]
B).pH= log ([1/H+])
C). A measure of the hydrogen ion concentration
D). A measure of the hydroxyl ion concentration✔️
20- The key element in all organic molecules is:
21- Substances that resist a charge in pH are called:
22- The major source of energy in animals comes from:
B). Nucleic acids
23- Two monosaccharides can combine to form a/an:
D). Hydrogen bond
24- Chitin is a good example of a:
D). All of these above✔️
25- Glycogen can be considered to be a:
D). All of these above✔️