I will think it’s B.... hope it helps!
Answer: Lysosome
Explanation:
The lysosome is an organelle found in cells of eukaryotes.
Its functions include:
I) It contains several hydrolytic enzymes such as
- glycosidases that break down complex sugars (polysaccharides),
- proteases that break down proteins,
- and sulfatases that hydrolyze sulphur-containing compounds,
- other enzymes for lipids and Nucleic acids
II) it also digest worn out organelles, and engulfed viruses and bacteria.
III) and helps to remove wastes from the cell.
2, they line up to form a polypeptide chain this forms part of a protein molecule.
Tumor suppressor genes encode for proteins that inhibit or slow the progression of the cell cycle through a specific stage.they also encode for check point control proteins that arrests the cell cycle if the DNA is damaged or the chromosomes are abnormal. Mutation in the tumor suppressor genes that cause a loss or decreased function would lead to uncontrolled cell cycle leading to abnormal proliferation and the cell may become cancerous.
Well, when chromosomes cross over during prophase 1 of meiosis, the homologous pair of chromosomes exchange segments of DNA which happen to be the genes. So the significance of crossing-over during prophase 1 is that it adds genetic variation to sexually reproducing organisms.
