<span>ctabolism is the process in which complex molecules are broken down into simple ones.</span>
Answer:1. They allow the movement of molecules from one cell to another, enabling communication between cells.
Explanation:the cell wall is a rigid and cellulose containing wall, which surrounds the plasma membrane.
During lignification, small pores appear on the cell wall through which cytoplasmic strands extend.these pores are the plasmodesmata,which provides connections between plant cells
<span>Cells control cell division in order to maintain normal cell function. If something happens to the control of the cell division, the healthy cells will divide uncontrollably. These new cells are cancer cells. </span>
The mutations in three genes are responsible for development of cancers:
1. Mutation in proto-oncogenes. Proto-oncogenes normally signal cells to grow and differentiate. Proto-oncogenes can become oncogenes due to mutations which result in the uncontrollable division of the cells.
2. Mutation in tumor suppressor genes. In normal cells, tumor suppressor genes suppress genes essential for cell cycle and that way they prevent uncontrollable cell division. However, after a mutation in these genes, suppression is lost and the cell may progress to cancer.
3. Mutation in stability genes. In normal cells, they have no role either in cell death or growth, but they control mutation rate. Mutation in stability genes results in situation where all genes, including proto-oncogenes and tumor suppression genes, are more frequently mutated.
Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. I know this isn’t a straight answer but hopefully it helps.
Answer:
C. Photosynthesis and cellular respiration
Explanation:
Photosynthesis uses energy from the sun, carbon dioxide, and water, to produce glucose and oxygen. This is used as a food source in plants.
Glucose is broken down by cellular respiration to release energy in the form of ATP.
Cellular respiration breaks down glucose in the presence of oxygen to produce energy, releasing water and carbon dioxide.
So the reactants and products are switched for these two processes and they could be considered "opposites" of one another.
