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chapter 19 bio 150 mastering biology Questions and Answers Latest Updated
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chapter 19 bio 150 mastering biology
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chapter 19 bio 150 mastering biologyThe nucleic acid of a virus particle is enclosed in a protein coat. What is it called? -
answer capsid
What do we call a virus that attacks a bacterium? - answer Phage
Which of the three types of viruses shown would you expect to include glycoproteins? -
answer reminder: go to your book and study this
Which of the three types of viruses shown in the figure would you expect to include a
capsid(s)? - answer reminder: go to your book and study this
what statements supports the argument that viruses are nonliving? - answer They do
not carry out metabolic processes.
what description correctly identifies the main structural differences between viruses with
envelopes and viruses without envelopes? - answer Viruses with envelopes have a
phospholipid membrane outside their capsid, whereas viruses without envelopes do not
have a phospholipid membrane.
In the lysogenic cycle _____. - answer viral DNA is replicated along with host DNA
How does HIV cause disease? - answer HIV kills cells that defend the body against
disease.
What replicative cycle describes a virus that can integrate its genome into the host cell's
genome? - answer the lysogenic cycle
What enzyme inserts viral DNA into the host's chromosomal DNA? - answer Integrase
How does HIV bind to a host cell? - answer The viral envelope proteins interact with
CD4 and a co-receptor on the cell membrane.
what event stimulates the production of viral particles in a host cell? - answer Activation
of the host cell by cytokines, growth factors, or antigens.
True or false? The human immunodeficiency virus (HIV) uses reverse transcriptase to
make double-stranded RNA copies of its DNA genome - answer false
A retrovirus such as HIV has an RNA genome and uses reverse transcriptase to make
double-stranded DNA copies of the genome, which can then be integrated into the host
cell's genome.
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