Cells usually cannot use heat to power mechanical work because (2 points) question 2 options: 1)  after several energy conversions, there is not enough energy in heat to power cellular functions 2)  as the heat increases the cell's temperature, it must be released to prevent cell damage 3)  heat is a waste product of chemical reactions and not a true form of kinetic or potential energy 4)  there is not enough of a temperature difference within the cell for heat to be able to flow

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Can someone pretty me with this ? it’s urgent.compare the three theories of emotion. here are the three theories of emotion. cannon-bard theory of emotion: the belief that both psychological arousal and emotional experience are produced stimultaneously ( at the same time) by the same nerve stimulus. james-lange theory of emotion: the belief that emotional experience is a reaction to bodily events occurring as a result of an external situation. ( “ i feel sad because i am crying.) schachter-singer theory of emotion: the belief that emotions are jointly determined by a nonspecific kind of psychological (bodily function) arousal and its interpretation, based on environmental ( natural surroundings) cues. which of these theories makes most sense to you? why. your response should be written using proper english spelling and grammar. and it needs to be 10 complete sentences.

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin