Blood vessels expand during hot weather and retract/ tighten in cold weather
<h2>False </h2>
Explanation:
Alimentary canal components include mouth, pharynx, esophagus, stomach, small intestine and large intestine whereas liver is a component of the accessory digestive system
- The liver is a large organ that is located in the upper right portion of abdomen, beneath the diaphragm
- The liver has two large sections, called the right and the left lobes and the gallbladder sits under the liver, along with parts of the pancreas and intestines
- The liver and these organs work together to digest, absorb, and process food
- The liver's main role is to filter the blood coming from the digestive tract, before passing it to the rest of the body
- The liver also detoxifies chemicals and metabolizes drugs
- The liver secretes bile that ends up back in the intestines and also makes proteins important for blood clotting and other functions
Answer:
This question lacks options, options are:
A) ATP
B) NADP
C) Pryuvate
D) glucose
E) acetyl-CoA.
The correct answer is C) Pyruvate.
Explanation:
Pyruvate is a very important compound for the cell since it is a key substrate for energy production and glucose synthesis (neo-glycogenesis), that is, pyruvate is the end product of glucose breakdown in glycolysis. Before entering the mitochondria, it can be converted to lactate, through an anaerobic reaction (in the absence or under oxygen supply) of low performance in energy production, when the main pathway is interfered with. It can also be converted to the amino acid alanine. Within the mitochondria, it can be transformed, by pyruvate dehydrogenase (PDH), into acetyl-coenzyme A (acetyl-CoA), the entry point (substrate) of the Krebs cycle. In addition, by means of pyruvate carboxylase, it can be transformed into oxalacetate, which constitutes the first step in neoglycogenesis.
Birds, Salamanders and Sharks are all Endotherms and can manipulate their body temperatures.
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