Answer:B6 and B12.
Explanation:
Homocysteine is an amino acid produced from demethylation of methionine.The later is an amino acid needed in the body which must be conserved.
In order to conserve it ,Homocysteine is recycled in a specific pathways which inovles activities of Vitamin B6 and B12
.Therefore deficiency of these vitamins leads to elevated levels of Homocysteine.
HIGH LEVELS OF HOMOCYSTEINE AFFECT THE ENDOTHELIAL CELLS ;LEADING TO ABNORMAL CLOTTING OF BLOOD.THIS INCREASE IN BLOOD VISCOSITY PUT THE HEART AT RISK OF CARDIOVASCULAR DISEASES.
Answer:
synapse
Explanation:
We know that nerve impulses, signals, must pass from cell to cell for a response to a given signal to occur. For this to happen, the presence of a specialized region called the synapse is required. Synapse is the structure that allows signals to be transmitted from one nerve cell to another.
Synapse can be defined as the region of proximity between the end of a neuron and a neighboring cell, where nerve impulses are transformed into chemical impulses due to the presence of chemical mediators.
A decrease of ATP production in the Krebs cycle
When sulfurous, sulfuric, and nitric acids in polluted air and rain react with the calcite in marble and limestone, the calcite dissolves. In exposed areas of statues, we see roughened surfaces, removal of material, and loss of carved details
Answer: the three types of freshwater are swamp,bog and marshes
Explanation: similarities between them
They are all covered with shallow layers of water during some or all of the year.surface water comes from streams,rivers,lakes,ponds and oceans and the Earth's surface.
Difference between them
Bogs are found in cooler northern areas,tends to be acidic and contain many mosses
Swamps are many trees and shrubs and are found in the warm and humid southern United State
Marshes are usually grassy
