Answer:
Tyrosine.
Explanation:
Tyrosine is a non-essential amino acid, it is part of proteins and is considered an aromatic amino acid. Its synthesis occurs from the hydroxylation of phenylalanine as long as it contains an adequate supply of this amino acid.Phenylketonuria is a hereditary disease whose main treatment is dietary restriction of the amino acid phenylalanine. People with phenylketonuria may have low levels of the amino acid tyrosine in their blood.Phenylalanine hydroxylase is an enzyme that converts phenylalanine to tyrosine. Deficiency of the enzyme phenylalanine hydroxylase is a congenital error of metabolism.
Answer:
The Sun is the main source of energy for most organisms
Explanation:
Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.
Answer:
The following are some pros and cons for badger control to stop bovine tuberculosis
Explanation:
Pros
1. culling showed significant decrease the occurrence of the disease in herds
2. The reduction in disease has been great economic help for farmers as the treatment is very expensive if the cows are tested positive.
cons
1. disrupted the ecosystem by targeting and killing badgers.
2. The policies and control methods are not cost efficient. they are high maintenance.
In order to monitor the rate of photosynthesis, we can conduct an experiment using the leaf disk method.
Due to air/gas found in the the inter-cellular spaces between the leaf, the disk will float on water. When the air is evacuated from the flasks (containing the leaf and the water), the leaf will lose its CO2 causing it to sink to the bottom. Therefore, a source of CO2 has to be added to the disks so that photosynthesis can happen again. This will be supplied by a sodium bicarbonate buffer system. When placed in water, an equilibrium will occur and some of the bicarbonate will become carbon dioxide. With this, the leaf will rise up back to the surface.
Hope this helps.
