Which statements about centrioles is false?
a. They are found in the centrosome.
b. They are duplicated before cell division.
c. They have a 9 + 2 arrangement of microtubules.
d. They are thought to play a role in microtubule assembly.
e. They are present in most animal cells but not most plant cells.
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
Harmful amounts of ________ may be absorbed by the leaf cuticle as well as by carotenoids and flavonoids.
A. carbon dioxide B. blue and red light waves C. chlorophyll D. xanthophylls E. UV radiation
In the following equation, rmax represents which of the following characteristics of population?
a. zero population growth
b. logistic growth
c. biotic potential
d. maximal population density
Endotoxic shock, resulting from the release of endotoxin by bacteria infecting a patient, is only caused by Gram-negative bacteria.
Answer the following statement true (T) or false (F)