Questions and Answers
True/False. A virus is classified as a microbe. Correct answer- True
True or False: The smallest biological unit of life is the molecule. Correct answer- False
-smallest unit of life is the cell.
At a generalized level, all cells are comprised of what? Correct answer- Proteins, lipids,
nucleic acids, and Polysaccharides
How many different types of amino acids are available from which to make proteins?
Correct answer- 20
How many amino acids are classified as being essential amino acids? Correct answer-
9
What are the two major types of nucleic acids and their roles? Correct answer- DNA
(deoxyribonucleic acids): contains genetic material and hereditary info in living
organisms, RNA (ribonucleic acid): decodes sequence of hereditary info that is found in
DNA
Complete the following DNA strand, and indicate how many bonds are formed for each
complementary pair:
3' GGTCATCG 5'
5' CC AGC 3' Correct answer- 3' GGTCATCG 5',
5' CCAGTAGC 3',
2 bonds between A & T, 3 bonds between C & G
The plasma membrane (select all that are true): Correct answer- Restricts movement of
materials in and out of the cell, Prevents essential nutrients from escaping
How many carbon atoms are present in the monosaccharide glucose? Correct answer-
6
The molecular formula of Glucose is Correct answer- C6H12O6
True of False: The genetic material within a prokaryotic cell is contained within a
membrane-enclosed region. Correct answer- False , Only eukaryotic cells contain
genetics in nucleus.
, True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea. Correct
answer- True
True or False: Archaea is noted for its ability to survive under harsh conditions. Correct
answer- True
Which of the following microorganisms are considered to be Eukarya? Select all that
apply. Correct answer- Animalia , Plantae , Fungi, Protista
Microorganisms classified as _________ obtain most of their energy by converting light
energy into chemical energy. Correct answer- Plantae
Which of the following are considered Protista? Select all that apply. Correct answer-
Algae , Amoeba
True or False: Protista retain a unicellular classification, as they are unable to form
tissue layers. Correct answer- True
The function of the lysosome is (select all that apply): Correct answer- Waste disposal
via hydrolytic enzymes
Identify the following cellular components by matching the number with the description.
Correct answer- 1 C Nucleus, 2 G Lysosome, 3 E Plasma membrane, 4 B Golgi
apparatus, 5 A Rough endoplasmic reticulum,
The combination of the cell membrane and the outer membrane is referred to as the
(select all that apply): Correct answer- Cell envelope
The function of the Golgi is (select all that apply): Correct answer- Protein modification
and distribution
True or False. All multicellular microorganisms classified as Animalia are autotropic.
Correct answer- False
True or False: As movement requires energy, metabolism can be defined as a
controlled set of biochemical reactions that occur in only motile organisms in order to
maintain life. Correct answer- False Metabolism occurs in all living organisms, not just
those that move.
True or False: Enzymes are polysaccharides that catalyze chemical reactions Correct
answer- False Enzymes are proteins that catalyze chemical reactions.
What is a cofactor? And give a general example. Correct answer- A cofactor is a small
chemical compound and helps an enzyme to catabolize a general example is metal
ions.