Answer:
Answered below.
Explanation:
Pesticides are an effective means for the control of mosquitoes and therefore the prevention of malaria. They are present in the form of sprays, liquids and powders. These pesticides are being used around the house, sprayed in the grasses and bushes and in stagnant water to prevent the breeding of mosquitoes.
The halt on the production of pesticides as a result of environmental concerns has resulted in the prevalence and increased cases of malaria in South America and Africa. This in turn gives rise to the increased demand of available medications ; Artemisinin and quinine being the popular ones available. As a resultof this high demand, supply is limited and prices soar.
This is a concern because this leads to the inability of the people of these regions to get treatment because majority of them are poor and cannot afford these expensive medications. Therefore cases of malaria and malaria-related mortality increase especially in pregnant women and under fives.
Answer:
Explanation:
A. Cancer cells are cancerous because they divide all the time. Normal cells stop dividing once there's enough of them but cancer cells divide when not required as well. Therefore, if Ras is mutated it will always be "on" which means it will activate the pathway which will lead to division of cells i.e. cells divide to multiply their numbers so more cells will be made. Normally, cells only multiply whne there's the growth factor present to activate the whole pathway, but since Ras is mutated it doesnt need the growth factor to activate the pathway, it automatically always activates the pathway even in absence of growth factor.
B. It is highly unlikely that the proposed drug will have a useful effect. This is because mutant Ras protein of this type behaves as though it is constantly "on". Ras acts downstream of the receptor, i.e. first you have the reception of growth factor in receptor, then the ras gets activated. However, the activating mutation makes its effect felt (Ras is activated no matter if there's a growth factor or not), which is why mutant Ras is always active and no longer dependent on the receptor for activation.
Therefore, blocking the ability of the receptor to dimerize and activate Ras will probably not have an effect on cells containing the mutant Ras protein as it does not inhibit the activity of mutated Ras protein.
(Check out the Ras/Ref/MEK/Erk pathway for better understanding of how significant role Ras protein plays in cell proliferation i.e. division)
Answer:
The correct answer is: we would lack the energy we need to function.
Explanation:
Glucose is a type of sugar that gives us energy. When we eat something that contains glucose, our body releases insulin, a hormone from our pancreas, which absorbs the excess glucose in the blood and stabilizes sugar levels. When insulin is released, it travels through the bloodstream to the body's cell. After that, the cells convert glucose into energy to use right then or store it for later use.
In other words, if our bodies could not metabolize glucose we would be hungry and exhausted because we would not get enough of the other nutrients (like proteins and fibers) to sustain our energy.
The term for the collection of destroyed bacteria, dead leukocytes, and other debris is pus. The process of forming pus is called suppuration. Usually, suppuration happens during inflammation when there is an acute influx of white blood cells (predominantly neutrophils) which destroy bacteria and other foreign bodies, leaving dead neutrophils and destroyed bacteria. A localized collection of pus is called an abscess.
