Answer:
This question is incomplete
Explanation:
This question is incomplete. However, let's understand some terms
Activation energy is the minimum amount of energy required for a reaction to proceed. Under normal condition, when the activation energy is high, it takes longer for the reaction to proceed than when it is low.
The burning of marshmallow is an exothermic reaction as it involves the transfer of heat energy into the environment.
The answer is [C-Poisoned wildlife from pestocides]
Answer:
Inside the nucleus.
Explanation:
Nuclear pores are the communication gate between the nucleoplasm and the cytoplasm, and all transport between the two compartments occurs through them. Therefore, they are a key element in function, in the response to external signals and in the differentiation of cells. And this is because they condition, for example, the exit of messenger RNA to the cytoplasm, or the entry into the nucleus of transcription factors that determine gene expression.
The proteins that are part of the pore complex are called nucleoporins. In yeasts there are about 30 different nucleoporins in each nuclear pore, while in metazoans they can be 40 or more. But in the same pore there may be repeated proteins and this causes a pore of a mammalian cell to be formed by about 500 to 1000 total nucleoporins. The pore complex measures about 100 to 150 nm in diameter, with about 40 nm of useful internal diameter, and 50-70 nm in height. It is one of the largest protein complexes in the cell, with about 125,000 kDa molecular weight.
Answer:
Atherosclerosis would be the occlusion.
What anastamosis is maintaining blood supply to the brain and by what routes?
●Collateral Circulation
●Collateral Willis
Explanation:
Atherosclerosisis affects arterial blood vessels by causing a thickening of the arteries by multiple plaques within the arteries.
Collateral Circulation best shows why there was adequate and necessary blood flow to the brain.
In Collateral Circulation closed smaller arteries links and connect to two bigger arteries or certain points of the same artery acting as another way of blood supply.
Collateral vessels are often closed but in people with coronary heart disease or stroke, it will expand and increase.
Note: there is something called collateral Willis referring to the choice of it remain close in some people and being open in some people.