Question

question 19 1 pts damage to the centrosome and centrioles in a cell would have the greatest impact on which cell function? energy production protein synthesis cell division synthesis of lipids and carbohydrates question 20 1 pts skin cells (epithelial) are held tightly together by: gap junctions. desmosomes. tight junctions. adhesions. question 21 1 pts lysosomes perform autophagy. this means that they: break down proteins and cytoplasm that are not needed by \self eating.\ are the protein - destroying organelle in the cell. synthesize atp. provide an internal supporting framework.

Explanation:

• Question 19: Centrosomes and centrioles play a crucial role in organizing microtubules and the mitotic spindle during cell division. Damage to them would severely impact this process. Energy production is mainly related to mitochondria, protein synthesis to ribosomes, and synthesis of lipids and carbohydrates to the endoplasmic - reticulum.
• Question 20: Desmosomes are strong cell - cell adhesion structures that hold epithelial cells like skin cells tightly together. Gap junctions allow for communication between cells, tight junctions prevent the passage of substances between cells, and adhesions is a more general term not as specific as desmosomes in this context.
• Question 21: Autophagy by lysosomes involves the breakdown of unnecessary proteins and cytoplasm through a "self - eating" process. Lysosomes are not responsible for synthesizing ATP (which is mainly done by mitochondria), providing an internal supporting framework (done by the cytoskeleton), and while they can break down proteins, the term autophagy specifically refers to the self - degradation process.

Answer:

• Question 19: Cell division
• Question 20: desmosomes
• Question 21: break down proteins and cytoplasm that are not needed by "self eating."