Answer:
Membrane folds of an organelle increase the surface area where chemical reactions occur, this is very advantageous. One organelle that has folds in the membrane is mitochondria.
Explanation:
Mitochondria are formed by two lipoprotein membranes, one external and one internal:
B. carbon dioxide
C. chitin
Answer: A. Silicon dioxide
Diatoms are unicellular algae that are found in the freshwater, brackish and marine water. These organisms exhibit cell wall that are made up of silica that is hydrated silicon dioxide. This type of cell wall is called as frustule. The cell wall is divided into two valves called as thecae.
same thing?
a. True
b. False
Answer:
b
Explanation:
one is a necessity, the other is a struggle
in the lysosomes
B.
in the nucleus
C.
inside the chloroplasts
D.
on the cell wall
Answer: Endothermic
Explanation:
An endothermic reaction occurs when energy is absorbed as heat, while a reaction is exothermic when heat is released. Thereby, these type of reactions require external energy to proceed and heat is the reactant.
So, an endothermic reaction absorbs heat from the surrounding environment and stores that energy in the bonds of a new molecule formed, and this results in a decrease in temperature.
Enthalpy usually increases in endothermic reactions. However, a spontaneous endothermic reaction can occur if changes in entropy and enthalpy yield a negative Gibbs free energy.