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What organelle has 13 rows of tubulin dimers around an empty central core?
The centriole is the organelle that has 13 rows of tubulin dimers around an empty central core. It plays a key role in cell division by organizing the mitotic spindle apparatus.
What is a cell structure consisting microtubules which forms during early mitosis and plays a role in cell division?
The structure you are referring to is the mitotic spindle. It is made up of microtubules that help separate the chromosomes during cell division to ensure each daughter cell receives the correct number of chromosomes.
What is a microtubule in a cell?
These are produced by centrioles that are located near the nucleus and they help cells divide. These produce the microtubules which make up the cytoskeleton (the thing which gives the cell support and prevents organelles from flying around).
What is the importance of the cytoskeleton?
The cytoskeleton is composed of Actin filaments, microtubules and intermediate filaments. Actin is essential in resistance to and distribution of physical stresses and for movement in some Cells such as immune Cells. It is also important for orientation in Cells such as columnar epithelial Cells. Actin combines with Myosin to produce Motile Elements - such as - Microtubules are used to transport materials and organelles around the Cell. Microtubules are also essential in the separation of sister chromatids during anaphase in Cells that undergo Cell division. Intermediate filaments are more complex in structure than Actin and MTs and far more varied but are still dynamic. IFs are important in the interactions between Cells to make up tissues and organs. Because of their varied functions they are divided into classes (Types I to V).
What are asters and where are they in a cell?
Asters are star-shaped structures made of microtubules found in animal cells. They are located around the centrosomes during cell division, specifically in the region close to the poles of the cell. Asters play a crucial role in organizing and positioning the mitotic spindle during cell division.
What is the function of the centriole pair?
It organizes the microtubules in mitosis. The microtubules move the chromosomes around the cell during mitosis, most importantly lining the chromosomes up at the metaphase plate in metaphase so that they can split up into the two daughter cells.
What organelle has 13 rows of tubulin dimers around an empty central core?
The centriole is the organelle that has 13 rows of tubulin dimers around an empty central core. It plays a key role in cell division by organizing the mitotic spindle apparatus.
How many ounces does one pack of starburst weigh?
A regular pack of Starburst candies typically weighs around 2 ounces.
How much did Starburst cost in the past?
it has been deduced that 1 starburst packet will cost around 37p, however each starburst costs 3.35p
What temperature is needed to melt a starburst?
To melt a Starburst candy, you would need to reach a temperature above its melting point. The melting point of Starburst candies is around 160-170 degrees Fahrenheit (71-77 degrees Celsius). Heating the candy beyond this temperature will cause it to melt into a liquid state.
How are microtubules and microfilaments arranged in cilia and flagella?
Cilia and flagella are composed of a core structure known as the axoneme, which consists of a characteristic "9+2" arrangement of microtubules. This means there are nine doublet microtubules arranged in a circle around two central singlet microtubules. Microfilaments, primarily composed of actin, are not a structural component of the axoneme but play roles in other cellular processes, such as cell motility and shape. The coordinated movement of cilia and flagella is facilitated by the sliding of these microtubules, powered by dynein motor proteins.
How are microtubules arranged?
Microtubules are long, cylindrical structures made up of tubulin protein subunits. They are arranged in a polarized fashion with one end called the "plus end" and the other end called the "minus end". Microtubules can organize into various configurations within cells, such as forming a radial array around the centrosome or serving as tracks for intracellular transport.
What maintains the cell's shape and transports structures around the cell?
The cytoskeleton maintains the cell's shape and helps in the transportation of materials around the cell. It is primarily composed of microtubules and microfilaments.
What is a cell structure consisting microtubules which forms during early mitosis and plays a role in cell division?
The structure you are referring to is the mitotic spindle. It is made up of microtubules that help separate the chromosomes during cell division to ensure each daughter cell receives the correct number of chromosomes.
What type of microscope do you need to see a centriole?
To see a centriole, you need an electron microscope, specifically a transmission electron microscope (TEM) or a scanning electron microscope (SEM). These microscopes provide the high resolution necessary to visualize the small structures within a cell, as centrioles are typically around 200 nanometers in diameter, far smaller than what light microscopes can resolve.
What is a seventh grade word for kinetochore?
I can only find spindle microtubules for kinetochore. Words and concepts get older as you get older, there just isn't anyway around it.
How long has star-burst been around?
Starburst, the popular fruit-flavored chewy candy, was first introduced in the UK in 1960 under the name "Opal Fruits." It made its way to the United States in 1967, where it was rebranded as Starburst. Since then, it has become a widely recognized and beloved candy brand, celebrating over six decades of presence in the candy market.
