The Biosphere Affects<span> Climate. ... Because of its involvement in the </span>Earth's<span> carbon cycle and nitrogen cycle, the </span>biosphere<span> influences the amounts of some of the major greenhouse gases such as methane, carbon dioxide, and nitrous oxide. Listed below are some of the </span>biosphere's<span> major influences on greenhouse gases.</span>
Answer:
The correct answer is option (D) "His- strain grows on an his- plate".
Explanation:
The Ames test is a procedure that allows to detect if a given compound can cause mutations on a tested organism by growing strains of bacteria that require histidine (His-) to growth, since they are not able to produce its own histidine. In the Ames test, the bacteria is exposed to a given compound and is grown in a medium with small amount of histidine (his- plate). If the His- strain grows on a his- plate, it means that the bacteria has mutated to synthesize its own histidine and it is considered as a positive result on a the Ames test.
<span>Out of the following given choices;</span>
a. the major excitatory
neurotransmitters in the CNS.
b. known to be solely inhibitory in the brain.
c. the predominant neuromodulators in the spinal cord.
d. the most common neurotransmitters in the CN
The answer is D. This
is because the amino acids are the main synaptic
neurotransmitters in the brain neurons. Glutamate is released by all
brain neurons and has an excitatory effect. GABA and glycine have the opposite effect
(inhibitory)
Answer:
When homologous chromosomes line up in pairs.