Cell Biology Questions
Explore questions in the Cell Biology category that you can ask Spark.E!
Living organisms are able to increase in complexity due to a constant input of ______ from the sun, but because the universe as a whole is also decreasing in complexity by a greater amount, the ______ in the universe is always increasing.
In ATP hydrolysis, the ______ between the phosphate groups in ATP are broken, and energy is released
The production of new molecules and the breakdown of old molecules in the cell is called
ATP stands for ______ triphosphate, which is a molecule that powers many cellular reactions.
When an atom or a molecule has gained an electron, it has been ______.
Only specific ______ can bind to an enzyme's active site, and each particular enzyme can only catalyze specific chemical reactions.
What molecule temporarily stores energy in cells?
H transferred from NADH to pyruvate; pyruvate is converted to lactate (lactic acid)
According to the laws of thermodynamics, all energy transformations are inefficient because every reaction loses some energy to the surroundings as
The measure of randomness or disorder in a system is called
oxidoreductase, transferace, hydrolase, isomerase, ligase, lyase
The loss of an electron from an atom or a molecule is called ______.
movement, molecule synthesis, establish concentration gradients
In lab, increasing the temperature provides energy to break bonds; in a cell, significant temperature increase would denature proteins (instead enzymes are used)
glycolysis, intermediate stage, citric acid cycle, electron transport system
The energy contained in the covalent bonds of molecules is a form of ______, which can be converted to kinetic energy that the cell can use to do work.
The stored energy available to do work is called ______ energy.
Activities of electron transport chain decrease (levels of NADH and FADH2 accumulate so there are decreased levels of NAD+ and FAD); Cell becomes more dependent upon glycosis (requires NAD+ to continue); glycolysis eventually shuts down (due to lack of NAD+); NAD+ must be regenerated for glycosis to continue
The energy being used to do work is called_______ energy and is the energy of motion.
different pathways if protein is used for fuel; point of entry depends on specific type; amino group is a waste product (converted to urea and excreted by kidneys)