If in a lichen, the fungal partner is a
cyanobacterium, what does the fungus receive
from its partner?
a. sugars
b. nitrogen compounds
c. oxygen
d. oxygen and sugars
e. nitrogen compounds and sugars
E
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Answer the question using the accompanying figure. Identify the developmental brain region that gives rise to the
a. hindbrain b. midbrain c. telencephalon d. medulla e. forebrain
Helicases are enzymes that
A) Catalyzes the addition of new nucleotides on 5' -3' strands of DNA. B) Catalizes the sealing together of short stretches of nucleotides in discontinuous strands. C) Catalyses are breaking of hydrogen bonds between base pairs in the DNA molecules. D) Catalyses the rewinding of the two DNA molecules after replication.
The genetic code is DIFFERENT in nearly all organisms.
a. true b. false
All of the following is correct about treating viral diseases except
A. viruses are killed by the same antibiotics that kill bacteria. B. many antiviral drugs block viral replication. C. many antiviral drugs cause severe side effects. D. interferons show potential for treating and preventing viral infections. E. All of the choices are correct.