Answer:
The correct answer is A. Tyrosine should be taken in through the diet as the body is unable to produce it.
Explanation:
Tyrosine is an organic chemical compound. It performs important biological tasks as an intracellular transmitter (it can be phosphorylated by protein kinases), and is also a precursor to important hormones and biologically active substances (thyroxine, triiodothyronine, adrenaline, noradrenaline and dopamine).
It is an endogenous amino acid, which means that the human body and most animals are able to synthesize it provided that there is sufficient supply of phenylalanine, from which tyrosine differs by the presence of one hydroxyl group.
Tyrosine is very important for the proper functioning of the thyroid and pituitary gland. Lack of this amino acid causes hypothyroidism, which can manifest itself in the form of fatigue and exhaustion. Reducing the amount of tyrosine in the body causes a deficiency of norepinephrine and dopamine, which can cause depression.
Answer: Technological treadmill have forced a lot of people out of work because it requires lesser labour in the primary sector. Also as harvest increases, prices of goods becomes lower resulting in less profitability.
Explanation:
Although North America produces vast quantities of food, only few people are involved in such production. This is because of the technological innovations that took place in the past two and a half decade. This enabled North America to grow large amount of food crops with low labour input. These technological innovations are technological treadmill. This has forced a lot of people out of work in the primary sector. An increase in the goods supplied result in lesser prices leading to less profit generated. To boost Agricultural production, the treadmill was introduced. These effort isn't just enough to increase income of farmers because the demand for goods is non-flexible while the prices of agricultural material is flexible.
Answer:
It supplies the energy needed for moving molecules through membranes. (Mitochondria convert glucose to ATP, the primary molecule of energy transfer for cells.)
Explanation:
