Cell Structure and Function

What is the name of the central structure in the proximal region of the centriole?

• Matrix
• Centrosome
• Basal body
• Hub

How many peripheral fibrils does a typical centriole have?

• Six
• Seven
• Eight
• Nine

Which part of the centriole connects the peripheral triplets to the central hub?

• Microfilaments
• Intermediate filaments
• Spindle fibers
• Radial spokes

What term did Walther Flemming use to describe the stainable nuclear material?

• Nucleoplasm
• Cytoplasm
• Karyoplasm
• Chromatin

Which scientist first described the nucleus as a cell organelle?

• Matthias Schleiden
• Theodor Schwann
• Anton van Leeuwenhoek
• Robert Brown