Question

When temperatures are sufficiently low.

cess, but the process only occurs in darkness or
pr
13. The sugars produced by photosynthesis can be used to synthesize amino acids,
which are compounds that contain nitrogen. Which step is necessary for amino acid
synthesis to occur?
AA nuclear reaction must occur to change carbon nuclei into nitrogen nuclei,
because sugars do not contain nitrogen.
B Hydrogen atoms must be added to the sugars to provide the energy needed
for amino acid synthesis.
Carbon atoms must be added to the sugars to provide the energy needed for
amino acid synthesis.
Carbon compounds must be combined with the sugars, because sugars
contain only one carbon atom per molecule.
E
Nitrogen compounds must be combined with the sugars, because sugars
not contain nitrogen.

Answer 1

Hydrogen atoms must be added to the sugars to provide the energy needed

for amino acid synthesis.

Carbon atoms must be added to the sugars to provide the energy needed for

amino acid synthesis.

or

Nitrogen compounds must be combined with the sugars, because sugars

not contain nitrogen.