Cilia, Flagella, and Centrioles

This quiz covers the 9+2 microtubule arrangement in cilia and flagella, basal bodies, centriole structure (9 triplet sets), their role during mitosis (spindle formation, asters), and differences between animal and plant cells

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Views #: 254
Questions #: 10
Time: 10 minutes
Pass Score: 80.0%
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What is the arrangement of microtubules characteristic of all cellular cilia and flagella?

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Cilia and flagella share a universal internal structure of microtubules, described by a specific numerical arrangement.

What is this arrangement called?

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Which organisms are the exceptions to the 9 + 2 microtubule arrangement in cilia and flagella?

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The 9 + 2 arrangement is characteristic of virtually all cellular cilia and flagella - but two groups of organisms are exceptions.

Which organisms are these exceptions?

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Centrioles nine sets

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Centrioles are cylindrical structures found near the nucleus in animal cells. They have a characteristic internal composition.

Centrioles are composed of nine sets of (1), all arranged lengthwise to create a (2) structure.

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doublets
triplets
spherical
cylindrical
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What do centrioles organize during cell division?

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During mitosis or meiosis, centrioles become active and play a key organizational role.

What structure do centrioles organize during cell division?

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The star-shaped formations

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During the early stages of spindle formation in animal cells, microtubules radiate outward from each centriole in a star-like pattern.

These formations are called (1).

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asters
spindles
cristae
grana
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Basal bodies and centrioles are structurally identical. How do they differ in location?

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To complete the line match
  1. Click on an item in the first group
  2. Click on an item in the second group
  3. To delete a match, double click on a line

Structure

Basal bodies
Centrioles

Location

Near the nucleus in animal cells only
At the bases of cilia and flagella in all cells

Basal bodies and centrioles share the same internal structure - nine sets of microtubule triplets arranged in a cylindrical form. However, they are found in different locations.

Match each structure to its location.

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Select ALL correct statements about centrioles.

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Select ALL statements that are correct about centrioles.

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Sort the events of centriole activity during cell division in the correct sequence.

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Please drag and drop the options to sort them

Arrange the following events involving centrioles during cell division in the correct order.

Centrioles replicate during telophase so each daughter cell has a pair
Both pairs of centrioles are located just outside the nucleus during interphase
Mitosis begins and centriole pairs move apart
Microtubules radiate around each centriole forming asters
The spindle forms and chromosomes align along it
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Classify each structure as belonging to cilia/flagella movement or centriole/spindle function.

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9 + 2 microtubule arrangement
Spindle fibers
Pinwheel cross-section
Basal bodies
Asters
Whiplike motion
Cilia / Flagella
Centrioles / Spindle

Drag each term into the correct functional category.

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True or False: Most higher plants form asters during cell division.

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True or False:

Most higher plants form asters during cell division, just like animal cells do.

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