Question

1. which type of cytoskeletal fiber is important in the formation of the nuclear lamina? (0.5pts)

□ microfilaments
□ intermediate filaments
□ microtubules
□ fibronectin

1. sugar groups may be added to proteins in which of the following? (0.5pts)

□ smooth endoplasmic reticulum
□ rough endoplasmic reticulum
□ golgi apparatus
□ lysosome
structures of a eukaryotic cell is not likely derived from an (0.5pts)

Explanation:

1. For question 13: The nuclear lamina is a mesh-like structure lining the inner nuclear membrane, composed of intermediate filaments called lamins. Microfilaments and microtubules form other cytoskeletal components, while fibronectin is an extracellular matrix protein.
2. For question 14: The Golgi apparatus is responsible for modifying proteins, including adding sugar groups (glycosylation). Smooth ER handles lipid synthesis, rough ER makes proteins, and lysosomes are digestive organelles.

Answer:

1. Intermediate filaments
2. Golgi apparatus