Answer: the answer is False
Explanation:
Answer:
Metaphase
Explanation:
The metaphase stage of the cell cycle precedes the anaphase and the telophase stages. During this stage, the metaphase plate is formed and chromosomes align along this plate which also represents the equator of the cell.
After lining up, mitotic spindles attach to each chromosome at the centromere. Shortening of the spindles results in separation of sister chromatids of the same chromosome and their eventual migration to the opposite poles of the cell.
<em>Hence, if the mitotic spindle refuses to attach to chromosomes, cells would most likely be arrested in the metaphase stage and will never be able to proceed beyond it.</em>
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<h3>⇝ <u>Epidermis</u> :</h3>
Protective tissues includes epidermis & cork. Epidermis is basically a simple permanent tissue, protective in function. It forms one-cell-thick covering over all the parts of plant.
<h3>⇝ <u>Characteristics of Epidermis</u> : </h3>
- Epidermis is formed of living cells, arranged in a single layer.
- In aerial parts, epidermis is covered with a waterproof and noncellular waxy covering called cuticle.
- Cells form a continuous layer, but in leaves epidermis has small openings called stomata.
- Each stoma is guarded by a pair of bean-shaped guard cells which govern opening & closing of stomatal aperture.
<h3>⇝ <u>Functions of Epidermis</u> :</h3>
- Epidermis protects the underlying tissues from mechanical injury, chemicals & infection.
- Cuticle of epidermis protects against water loss & desiccation. It checks the rate of transpiration & evaporation and prevents wilting.
- Stomata in the epidermis of leaves help in gaseous exchange during respiration & photosynthesis.
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The process of DNA replication leads to the build up of torsional stress in the synthesised DNA helix. This torsional stress is due to the presence of tighter turns within the newly synthesised DNA helix. The DNA replication machinery then recruits the DNA topoisomerase enzyme to release the torsional stress by cleaving the synthesised DNA strands, followed by their ligation.
Answer:
The TATA box Is a sequence in DNA that provides a site for transcription factors to bind to.
The TATA box Is also known as a promoter.
Explanation:
The TATA box is not a sequence in RNA that signals that a protein should be synthesized on the rough ER.
The TATA box Is not a sequence in RNA that signals the formation of ribosomal subunits
TATA Is not a sequence in DNA that provides a site for helicase to unwind DNA.
