Explanation:
<em>The disadvantage of a closed circulatory system is that with the blood always contained in vessels, it's under higher pressure. This means it can flow faster, which is necessary for supporting the metabolic rate of more complex animals such as vertebrates. Open circulatory systems are low-pressure systems that cannot meet the needs of a fast metabolism</em>.
I think that the traced the organisms back to their ancestors<span />
Answer:Inducible;inducer
Explanation:
Induction is the phenomenon of increased synthesis of protein or and enzyme in response to certain signal. Such enzymes are called inducible and the signals are called inducer. Induction is turning ''on''the switch of a gene.
When M is present in the medium, M binds the repressor protein. The repressor-M complex is inactive which does not bind to the operator region of LM. Now RNAP can transcribe the structural genes of LM.
M switches the gene ''on''. Hence M is an inducer of LM. LM is an inducible operon
Answer:
Four to six days prior to the event, Maria should consume 550 g of carbohydrate daily and decrease to 220 to 275 g of carbohydrate daily 1 to 3 days prior to the event.
Explanation:
Carbohydrate loading is for constant supply of constant energy as ATPs for the skeletal muscles cells during high intense activity, to reduce fatigue, and increase performance for upmost performance.
The main objective is to sustaining muscle contraction during intense exercise
The practice involved increase in intake of high carbohydrate meals a few weeks before the commencement of the sporting activities. This is stored as muscle glycogen, as well as in the liver glycogen and brain.
The physiology involved the conversion of muscle glycogen to glucose -6-phopahate in the liver, and its entry into Glycolysis, and Krebs’s cycle to generate ATPs.
The use of muscle glycogen during strenuous exercise reduces blood glucose uptake, and ensured that its level is at a relatively constant value for the body homeostatic conditions, without exogenous carbohydrate intake
A is correct (ur welcome)
