His work, which was documented and repeatable, contradicted the accepted cell theory, so a change in the theory was required.
<span>The spherical object within a cell that controls its activity is the nucleus. The nucleus is the spherical organelle inside the cells. The genetic material can be found within the nucleus. So, the genetic information of the cell is inside the nucleus and therefore the nucleus can the activity of the cell.</span>
Answer:
A
Explanation:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells.
Carolus Linnaeus also known as Carl von Linné
1. The answer is "<span>the energy required to start the reaction".
</span>This energy is called as activation energy of the reaction. If the activation
energy is high, reaction is slow. Enzymes help to carry out the reaction by
a new path by reducing the activation energy. But the energy of reactants
and the products remain as same as without enzyme.
2. The answer is "reaction in cells would be too slow to sustain life<span>".
</span>If the activation energy is very high for the reaction, then that reaction will
be very slow and will require more time<span> to complete the reaction. Then survival is
very low. Hence, the roll of enzymes is very important to sustain life.</span>