Answer:ATP is required for muscle contraction. Four sources of this substance are available to muscle fibers: free ATP, phosphocreatine, glycolysis and cellular respiration. A small amount of free ATP is available in the muscle for immediate use
Explanation:
Answer:
The evidence suggests that these chloroplast organelles were also once free-living bacteria. The endosymbiotic event that generated mitochondria must have happened early in the history of eukaryotes, because all eukaryotes have them
Explanation:
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ATP is the phosphoryl
group donor
<span>The free energy of the
phosphorylation reaction is large.</span>
Phosphorylation is known to
be an effective way of regulating protein and in eukaryotic cells, about 30% pf
the protein are phosphorylated. Thus, the enzyme responsible for the phosphorylation
reaction is known as kinases. However, ATP is required in the process
phosphorylation because it is needed as a donor.
<span>the glucose-sodium cotransporter in animals, Na+ moves back into the cell down its electrochemical gradient, providing the energy for glucose to move into the cell against its concentration gradient.
</span>It makes sense css <span> glucose is cotransported with Na+ ions</span>
<span>In cotransport, the energy required to move one solute against its concentration or electrochemical gradient is provided by an ion moving into the cell down its electrochemical gradient. </span>