Bio II Fall Review Question Preview (ID: 49245)


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We know viruses are not alive because
a) they are not cellular
b) they cannot make proteins
c) they cannot use energy
d) all of the above

The study of viruses is part of biology because
a) they belong to the kingdom Monera
b) they are about to become extinct
c) they are living organisms
d) they are active inside living cells

The tobacco mosaic virus
a) is able to be crystallized
b) causes disease in tobacco plants
c) is smaller than a bacterium
d) all of the above

Viruses
a) are cellular organisms
b) reproduce in living cells
c) have nuclei and organelles
d) are surrounded by a polysaccharide coat

A typical virus consists of
a) a protein coat and a cytoplasm core
b) a carbohydrate coat and a nucleic acid core
c) a protein coat and a nucleic acid core
d) none of the above

Biologists now know that viruses
a) are the smallest organisms
b) consist of a protein surrounded by a nucleic acid coat
c) contain RNA or DNA in a protein coat
d) all of the above

The capsid of the virus is the
a) protective outer coat
b) cell membrane
c) nucleus
d) cell membrane complex

An animal virus enters its host cell by
a) being injected into the cell
b) penetrating a rip in the cell wall
c) punching a hole in the cell membrane
d) endocytosis across the cell membrane

The cycle of viral infection, replication and cell destruction
a) lytic cycle
b) lysogenic cycle
c) metabolic cycle
d) none of the above

A pathogen is an agent that is
a) beneficial to all organisms
b) harmful to living organisms
c) harmful only to plants
d) nearly extinct

HIV can be transmitted
a) through sexual contact
b) through sharing of nonsterile needles
c) to infants during pregnancy or through breast milk
d) all of the above

One difference between the cells in the human body and bacterial cells is that bacterial cells have
a) an outer cell wall made up of lipids
b) an outer cell wall make up of polysaccharides and proteins
c) no DNA
d) no ribosomes

Structures found in eukaryotic cells but NOT in a bacterial cell are
a) nuclei
b) linear chromosomes
c) membrane-bound organelles
d) all of the above

Which of the following might be found in the cyctoplasm of a bacterial cell?
a) chloroplasts
b) Golgi bodies
c) mitochondria
d) none of the above

Bacterial cells have
a) a cell wall only
b) a cell membrane only
c) both a cell membrane and an outer cell wall
d) a cell wall inside of the their cell membrane

Bacteria cells can be classified according to their
a) type of cell walls
b) methods of obtaining energy
c) Gram-staining characterisitics
d) all of the above

Alexander Fleming, a British bacteriologist, is credited with the discovery of
a) penicillin
b) HIV
c) photosynthetic bacteria
d) New England Patriots

Antibiotics
a) include penicillin, tetracycline and streptomycin
b) may prevent bacteria from making new cell walls
c) are effective treatments for bacterial diseases
d) all of the above

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