Viruses
TRUE OR FALSE: viruses are alive
FALSE
What are the eight major ranks of the hierarchical taxonomic system?
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Do viruses have DNA?
YES!
what do the xylem and phloem do?
they carry things up the plant roots so it can get its water and nutrients
Why do viruses need host cells?
Because they can't reproduce by themselves
In an energy pyramid, where do the primary, secondary, and tertiary consumers go? Where do the producers go? List in order from bottom to top.
producer-->primar-->secondary-->tertiary
In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could be injected into healthy individuals. How is this method effective in fighting viral diseases?
A The immune system develops antibodies in response to the weakened viruses.
B The weakened viruses attach to unaffected viruses in the host and interrupt the viral reproductive cycle.
C The rate of genetic mutation in the host is decreased due to the introduction of weakened viruses.
D Weakened viruses are unable to enter the host organism
A The immune system develops antibodies in response to the weakened viruses.
What is the Lytic and Lysogenic cycle?
Lytic -
Lysogenic -
What molecules are the building blocks of DNA?
Nucleotides