Question

1. which type of cytoskeletal fiber is important in the formation of the nuclear lamina? (0.5pts) microfilaments intermediate filaments microtubules fibronectin

Explanation:

1. For question 12: The endomembrane system includes organelles that work together for membrane synthesis, protein processing, and transport. Endoplasmic reticulum, Golgi apparatus, and lysosomes are core components. Peroxisomes carry out oxidative reactions independently and do not belong to this system.
2. For question 13: The nuclear lamina is a mesh-like structure lining the inner nuclear membrane, composed of intermediate filaments called lamins. Microfilaments, microtubules, and fibronectin (an extracellular matrix protein) are not part of its structure.

Answer:

1. Peroxisome
2. Intermediate filaments