PPSC FPSC Lecturer Zoology Solved MCQs Practice Test 2

1- Which of the following would be classified as a monosaccharide?

A). Cellulose

B). Glucose✔️

C). Maltose

D). Glycogen

2- Which of the following is an important storage compound for sugar in animals?

A). Cellulose

B). Starch

C). Glycogen✔️

D). Sucrose

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…..

A). Heterotrophs

B). Primary heterotrophs

C). Autotrophs✔️

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

B). Archaea

C). Cyanobacteria✔️

D). Eukaryotic unicells

8- DNA can currently be found in which of the following structures or organelles?

A). Nucleus

B). Mitochondria

C). Plastids

D). All of the above contain DNA✔️

9- The amount of matter in an object is referred to as its:

A). Weight

B). Mass✔️

C). Atomic number

D). Atomic mass

10- Which of the following does not contribute to the majority of an animal’s weight?

A). Oxygen

B). Carbon

C). Hydrogen

D). Sodium✔️

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.

A). Neutrons

B). Electrons

C). Protons✔️

D). Isotopes

13- If a substance can be broken down into two or more chemical elements, it is a:

A). Mixture

B). Solution

C). Element

D). Compound✔️

14- Which of the following is not a type of chemical bond?

A). Lonic

B). Hydrogen

C). Covalent

D). Hydrophobic✔️

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.

A). Ionic✔️

B). Hydrogen

C). Covalent

D). Nonpolar covalent

17- Which of the following is an electrolyte?

A). Water

B). NaCl✔️

C). Glucose

D). Ethane

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:

A). Oxygen

B). Hydrogen

C). Nitrogen

D). Carbon✔️

21- Substances that resist a charge in pH are called:

A). Electrolytes

B). Bases

C). Buffers✔️

D). Acids

22- The major source of energy in animals comes from:

A). Fats

B). Nucleic acids

C). Proteins

D). Carbohydrates✔️

23- Two monosaccharides can combine to form a/an:

A). Isomer

B). Polysaccharide

C). Disaccharide✔️

D). Hydrogen bond

24- Chitin is a good example of a:

A). Polysaccharide

B). Carbohydrate

C). Polymer

D). All of these above✔️

25- Glycogen can be considered to be a:

A). Polysaccharide.

B). Carbohydrate.

C). Polymer

D). All of these above✔️

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