All cells have DNA, cytoplasm, and ribosomes
<span>B.The patient has too much "bad" and not enough "good" cholesterol in his or her blood.</span>
Energy is absorbed to break bonds in mgcl, and to form bonds in cacl2. Thus, the correct option is A.
<h3>
How do chemical reactions occur?</h3>
The transformation that takes place in substances, wherein atoms rearrange themselves and alter their initial state, is what gives rise to chemical processes. As a result, chemical compounds alter and produce new molecules.
A replacement reaction is the sort of reaction implied by the chemical formula Ca + MgCl2 --- CaCl2 + Mg.
In this instance, energy is absorbed during the chemical reaction to break bonds in the reactants and build bonds in the products.
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<span> temporary cytoplasmic projections of the cell membrane in certain unicellular protists such as amoeba. </span>
Answer
Cellulose, lignin and suberin are the chemicals that provide rigidity to cell wall.
Explanation
In plant two type of growth occurs, primary and secondary growth. in primary growth when new cells are formed they are bounded by primary wall whose composition in mainly of cellulose. in secondary growth accumulation of lignin in secondary wall, suberin in cork cell wall and lignin in xylem cell wall occurs which provide rigidity.