18 Oct Complex communities of microorganisms on surfaces are called:

Complex communities of microorganisms on surfaces are called:

 

1.Colonies

 

2. Biofilms

 

3. Biospheres

 

4. Flora

 

Question 2A relationship between organisms in which one organism is benefited and the other is unaffected is called:

 

1.Mutualism

 

2.Competition

 

3.Synergism

 

4.Commensalism

 

Question 3Which of the following sites of the human body does not have a normal flora?

 

1.Intestine

 

2.Skin

 

3.Vagina

 

4.Blood

 

Question 4Which of the following lacks nucleic acids?

 

1. Archaea

 

2. Viruses

 

3. Prions

 

4. Bacteria

 

Question 5Sucrose is composed of:

 

1.Glucose and galactose

 

2.Glucose and fructose

 

3.Fructose and maltose

 

4.Glucose and maltose

 

Question 6Starch is an example of a __________.

 

1. Protein

 

2.Carbohydrate

 

3.Lipid

 

4.Nucelic acid

 

Question 7During DNA replication, cytosine always undergoes complementary base pairing with which of the following nucleotides?

 

1. Adenine

 

2.Guanine

 

3. Thymine

 

4. Uracil

 

Question 8The RNA nucleotide that base that pairs with adenine of DNA is:

 

1. Cytosine

 

2.Guanine

 

3. Thymine

 

4. Uracil

 

Question 9The cell organelles found only in algae and plant cells are:

 

1.Chloroplasts

 

2. Mitochondria

 

3. Vacuoles

 

4.Vesicles

 

Question 10The group of organisms that includes yeasts and molds is known as _______.

 

1Algae

 

2. Bacteria

 

3.Fungi

 

4. Viruses

 

Question 11Which of the following organelles contain oxidative enzymes capable of oxidizing toxic substances?

 

1. Mitochondria

 

2. Chloroplasts

 

3. Lysosomes

 

4.Peroxisomes

 

Question 12Chemically, most enzymes are:

 

1. Proteins

 

2. Lipids

 

3. Nucleic acids

 

4. Carbohydrates

 

Question 13Binary fission is a form of reproduction used by:

 

1. Viruses

 

2. Bacteria

 

3. Fungi

 

4. Helminths

 

Question 14An inanimate object or substance capable of transporting pathogens from one medium or individual to another is referred to as a:

 

1. Vector

 

2. Fomite

 

3.Transporter

 

4. Transposon

 

Question 15The destruction of all microorganisms and their endospores is referred to as:

 

1. Disinfection

 

2. Degermation

 

3. Sanitization

 

4. Sterilization

 

Question 16The process where energy (ATP) is created in the presence of oxygen is known as:

 

1. Aerobic respiration

 

2. Anaearobic respiration

 

3. Fermentation

 

4. Photosynthesis

 

Question 17Media that contain added complex organic substances, such as blood, for the growth of specific bacteria are referred to as:

 

1.Enriched media

 

2. General-purpose media

 

3. Differential media

 

4. Reducing media

 

Question 18The stain that is used to identify bacteria with a large amount of peptidoglycan in their cell walls is the ________.

 

1.Methylene blue stain

 

2. Congo red stain

 

3. Simple stain

 

4. Gram stain

 

Question 19Which of the following stains is generally used for the diagnosis of tuberculosis (TB)?

 

1. Simple stain

 

2. Acid fast stain

 

3. Gram stain

 

4. Negative stain

 

Question 20CDC stands for:

 

1.Centers for Disease Control and Prevention

 

2. Children’s Disease Center

 

3. Central Disaster Control Center

 

4. Central Drug Evaluation and Control Center

 

Question 21All of the following are bloodborne pathogens in the healthcare setting except:

 

1. Hepatitis A

 

2. Hepatitis B

 

3. Hepatitis C

 

4. HIV

 

Question 22Which of the following industries use(s) microorganisms?

 

1. Wine

 

2. Cheese

 

3.Chemical

 

4. All of the above

 

Question 23True or False? All bacteria are eukaryotic.

 

1.            True

 

2.            False

 

Question 24The organelles responsible for packaging proteins for transport are the:

 

1. Ribsomes

 

2. Golgi complexes

 

3. Lysosomes

 

4. Mitochondria

 

Question 25How many different biosafety levels have been established for the handling of microorganisms?

 

1

 

2

 

3

 

4