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Microbiology > exam 1 questions > Flashcards

exam 1 questions Flashcards

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Biology 101 flashcards
1
Q

The human body only contains bacteria during illness
- T/F

A

False

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2
Q

Viroids are naked (lacking a protein shell) pieces of RNA that infects plants
- T/F

A

True

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3
Q

Spontaneous generation refers to the idea that organisms came from other organisms
- T/F

A

False

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4
Q

The structures present in the hay infusions used in experiments on spontaneous generation that made them difficult to sterilize are

A

Endospores

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5
Q

The outbreak of measles within the last few years is due to…

A

a decline in the vaccination of children in the previous years

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6
Q

Ulcers previously thought to be caused by stress are in fact often caused by…

A

a bacterial infection

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7
Q

Which of the following regarding normal microbiota is TRUE…

A

normal microbiota protect us from disease by competing with pathogenic bacteria

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8
Q

The cell types that lack a membrane bound nucleus and have a rigid cell walls of peptidoglycan are…

A

bacteria

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9
Q

DNA is always double-stranded but RNA is always single stranded
- T/F

A

True

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10
Q

Lipids are polar, hydrophilic molecules
- T/F

A

False

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11
Q

Saturated fats have no double bonds in the hydrocarbon chain of fatty acids
- T/F

A

True

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12
Q

This reaction occurs when two monomers are joined together through the loss of a water molecule…

A

dehydration synthesis

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13
Q

Sharing of electrons between two atoms forms a(n)

A

covalent bond

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14
Q

Which statement regarding pH is correct…

A

pH is a measure of the hydrogen ion concentration in a solution

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15
Q

Which is the uncharged component of the atom

A

neutron

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16
Q

The carbohydrates found in nucleic acids is…

A

ribose or deoxyribose

17
Q

A fly is considered a mechanical vector
- T/F

A

True

18
Q

The natural habitat of a pathogen is referred to as its…

A

Reservoir

19
Q

An epidemic that spreads worldwide is called a(n)…

A

Pandemic

20
Q

Important sources of contamination in crowded locations are

A

saliva or mucus

21
Q

Which of the following is NOT a political or societal factor that might lead to emerging disease…

A

microbial evolution

22
Q

When an infectious disease cannot spread in a population because it lacks a significant number of susceptible hosts, the phenomenon is referred to as…

A

herd immunity

23
Q

LPS is found in the outer membrane of gram neg bacteria
- T/F

A

True

24
Q

Lysosomes are bags of digestive enzymes found in prokaryotic cells
- T/F

A

False

25
Q

The resolving power of a microscope is described as the ability of the microscope to…

A

separate two objects that are very close together

26
Q

The cytoplasmic membrane of BOTH eukaryotes and prokaryotes functions to…

A

Regulates movement of molecules that enter and leave the cell

Microbiology (7 decks)

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