<span>During dna replication, the covalent bonding of nucleotides into a new strand of dna is performed by DNA POLYMERASE.
DNA Polymerase is an enzyme discovered by Arthur Kornberg in 1956. It carries out all forms of DNA replication.
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B) Pacific Plate and Indian-Australian Plate
Explanation:
The plate boundary where one lithospheric plate is sliding under another is the found between the pacific plate and Indian-Australian Plate.
- These margins are called convergent margins.
- This is a typical oceanic crust in its entirety makes up the bulk of the Pacific plate.
- Oceanic crusts are denser than the underlying mantle that is below.
- The Indian- Australian plate subducts or goes under the pacific plate and it forms the Puysegur Trench.
- Trenches are common feature of subduction zones.
learn more:
Lithosphere brainly.com/question/9582362
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Answer:
(a) Microfilaments
(b) Microtubules
(c) Microtubules
(d) Microfilaments
(e) Intermediate filaments
(f) Microfilaments, intermediate filaments, microtubules
(g) Microfilaments, microtubules
(h) Microfilaments, intermediate filaments, microtubules
(i) Microtubules, microfilaments
(j) Microtubules
Explanation:
Microtubules (MTs) are dimers of the protein tubulin (alpha- and beta-tubulin subunits) and they are major components of the cytoskeleton. MTs play diverse cellular roles including, mechanical support (cytoskeleton), transport, motility, chromosome segregation, etc. Microfilaments (MFs) are protein filaments that also form part of the cytoskeleton in eukaryotic cells. MFs consist of G-actin monomers assembled in linear actin polymers, and their functions include mechanical support, cytokinesis, changes in cell shape, amoeboid movement, endocytosis and exocytosis, etc. MFs associate with the protein myosin to generate muscle contractions. Actin filaments/MTs assembly from monomeric actin/tubulin is caused due to energy expenditure, where ATP/GTP bound to actin/tubulin is hydrolyzed during polymerization. Finally, intermediate filaments (IFs) are a type of cytoskeletal element composed of a heterogeneous group of structural elements, and they are not found in all eukaryotes. The primary function of the IFs is to contribute to the mechanical support for the plasma membrane where these filaments come into contact with other cells and/or with the extracellular matrix. The IFs are not directly involved in cell movement. All 3 types of cytoskeletal elements (microfilaments, intermediate filaments, microtubules) can be visualized by fluorescence microscopy when cells express chimeric MT/IF/MF.–GFP fusion proteins.
It’s because unlike twins the regular siblings aren’t born on the same date or a couple minutes apart, but rather a couple years old or younger.
