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During the M phase of cell division, particularly in mitosis, the radiating protein strands at the poles of an animal cell are primarily composed of microtubules. These structures form the mitotic spindle, which helps to segregate chromosomes into the daughter cells. The microtubules extend from the centrosomes, anchoring to the kinetochores of chromosomes to ensure proper alignment and separation. This organization is crucial for accurate cell division and genetic stability.
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What enzyme stabilizes the DNA strands during DNA replication?
The enzyme that stabilizes the DNA strands during replication is called single-strand binding protein (SSB). SSB binds to the separated strands of DNA after the double helix is unwound by helicase, preventing the strands from re-annealing or forming secondary structures. This stabilization is crucial for enabling the DNA polymerase to synthesize new strands accurately.
The sections of DNA cell copies as RNA strands to make specific proteins during transcription and translation are referred to as?
The sections of DNA that get copied into RNA strands during transcription are called genes. These RNA strands are then used as templates to make specific proteins during translation.
Can nucleic acid duplicate itself?
Yes, nucleic acids can duplicate themselves through a process called replication, which involves unwinding the DNA double helix and synthesizing two new strands that are complementary to the original strands. This process ensures that genetic information is passed on accurately during cell division.
The two DNA strands that form during mitosis are identical true or false?
True and false because two DNA strands can be Identical during mitosis sometimes and sometimes not.
What are th strands of DNA called during cell division?
chromosomes
Protein strands that attach to the centromere region during M-phase of cell cycle?
During Metaphase the protein strands that attach to the centromere region are called spindle fibres.
What enzyme stabilizes the DNA strands during DNA replication?
The enzyme that stabilizes the DNA strands during replication is called single-strand binding protein (SSB). SSB binds to the separated strands of DNA after the double helix is unwound by helicase, preventing the strands from re-annealing or forming secondary structures. This stabilization is crucial for enabling the DNA polymerase to synthesize new strands accurately.
When an enzyme that blinds to DNA and separates the DNA strands during transcription is RNA what?
The enzyme that binds to DNA and separates the DNA strands during transcription is RNA polymerase. It is responsible for synthesizing a complementary RNA strand using one of the DNA strands as a template. This process is essential for gene expression and protein synthesis.
Which protein prevents the reannealing of DNA during replication?
SSB (single-strand binding) protein prevents the reannealing of DNA during replication by binding to single-stranded DNA, keeping the strands separated and accessible for replication machinery to function.
What is the significance of double stranded DNA or RNA in genetic replication and protein synthesis?
Double stranded DNA or RNA is significant in genetic replication and protein synthesis because it serves as a template for the accurate copying of genetic information. During replication, the double strands separate to allow for the synthesis of new complementary strands. In protein synthesis, the double strands provide the instructions for the sequence of amino acids that make up proteins. This process is essential for the proper functioning and development of living organisms.
Is Use of mRNA during protein productiona a characteristic of members of the plant kingdom that distinguishes them from members of the animal kingdom?
No, the use of mRNA during protein production is a fundamental process that is shared by both plant and animal kingdoms. mRNA serves as a template for protein synthesis in both plant and animal cells through the process of translation.
What protein strands connecting the centrioles become visible during middle prophase and are almost complete by late prophase?
These strands are called spindle fibers. Each replicating chromosome lines up vertically on a spindle fiber during metaphase. During anaphase, the fibers pull the replicating chromosomes apart (leaving one chromosome to go to either end of the cell).
What is the long strand of DNA and protein?
The long strand of DNA and protein is called a chromosome. Chromosomes are found in the nucleus of eukaryotic cells and contain genes that carry genetic information. They condense and become visible during cell division.
How does the single-stranded binding protein contribute to the process of DNA replication?
The single-stranded binding protein helps keep the DNA strands apart during replication by preventing them from rejoining. This allows other enzymes to access the DNA and copy it accurately.
What is one of the two strands of a chromosomes that become visible during meiosis or mitosis?
daughter strands
What does a chromosome do to an animal cell?
Found in the nucleus, they are composed of DNA which have the code for amino acid and protein synthesis. Chromosomes keep these strands of DNA organised into a sort of 'X' shape. During mitosis (division of cells), chromosomes make sure that the DNA when split, is intact and evenly distributed between the two daughter cells.
What is cadaverine?
Cadaverine is a foul-smelling chemical compound produced by protein hydrolysis during putrefaction of animal tissue.
