I would say the answer is A, I think this because the muscles are for sure involuntary because you don't tell you body to move blood, and they would have to be smooth.
Answer: Small intestines
Explanation: Digestion of carbohydrates begins in the mouth mechanically and through salivary amylase. It passes down to the stomach by parastalsis, digested further and goes to the small intestines where their absorption begins. Carbohydrates are a source of glucose, that most organs use as their primary energy source. Indigestible carbohydrates and fibers travels down to the large intestines where they are digested by bacteria or eliminated as waste through the anus.
The small intestines consist of microvilli that increase surface area for maximum nutrient absorption. Carbohydrates are absorbed by the small intestines via the jejunum, taken to the blood stream then transported to the liver where glycolysis and most metabolic pathways take place, for energy production.
Answer - It will allow the molecules move against the concentration gradient which is pretty much acting against it. (Low concentration gradient TO high concentration)
Reason - It will use energy. For example in a river theres a down flow but if you want to get up top of the river you must go against it by going against the current. Pretty much the same thing but its happening with the cell in a active mode.
Okay so The most serious dangers of exposure to outer space are a lack of oxygen and ebullism. Ebullism is the formation of bubbles in body fluids due to a reduction in ambient pressure. The pressure in the vacuum of space is so low that the boiling point of the fluids in your body decreases below the body’s normal temperature (37oC), which results in the formation of gas bubbles in your fluids that can really mess you up. You’ll swell up pretty bad, perhaps even up to twice your normal size, but you won’t explode as your skin is very stretchy. Your blood will also not boil. You will, of course, be in an immense amount of pain and your blood circulation will be impeded. Therefore you will die in outer space due to no oxygen and the vacuum in space. Hope this answers your question.
