One critical requirement for life to arise on Earth was time for which to occur?
a. The salinity of the oceans to stabilize
b. The Earth's various climates to stabilize
c. Molecules to accumulate and react with one another
d. The atmospheric temperature to increase sufficiently
e. The ozone layer to form, so that the level of ultraviolet radiation was reduced
c
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Baculovirus genomes are 133.9 kb long and encode over 150 genes. This suggests that
A. their protein structures are very complex B. their protein coats consist of very few types of protein subunits C. their genetic material is RNA D. their genetic material is DNA E. they have a small host range
Maternal blood mixes directly with the embryo’s blood in the placenta
a. True b. False
What is the function of RNA interference?
What will be an ideal response?
Cancer is caused by many different types of gene mutations. Some mutations are in proto-oncogenes, which lead to overexpression of the genes, and other mutations are in tumor suppressor genes, which lead to under expression or no expression in these
genes. Which kinds of gene mutations would RNA interference (RNAi) be better at treating? Explain. What will be an ideal response?