#Question id: 59
#XL - Q Biochemistry
Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?
#Question id: 12925
#XL - S Microbiology
#Question id: 10241
#XL - T Zoology
In an Asian rice paddy, carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves, stems, and roots of the same plant. They can survive at the same time in the same rice paddy because they
#Question id: 3773
#XL - Q Biochemistry
DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA polymer being formed during DNA replication?
#Question id: 10558
#XL - R Botany
In a vertically oriented glass capillary tube, the upward movement of water is due to