Answer: Bacteria is your answer!
Explanation:
"The nuclear material in the cell or the DNA is contained within a double membrane. Bacteria are the only type of cells that are not eukaryotic, they are prokaryotic so they do not have DNA encased within a membrane."
Answer: d. none of the other answers
Explanation:
Enzymes that turn chemical energy into mechanical work are molecular motors.
There are three main components of cytoskeleton including microtubules, actin filaments and Intermediate filaments. Only actin filaments and microtubules carry the motor-driven transport on the cytoskeleton.
The most important feature of intermediate filaments is to provide the plasma membrane with mechanical support where it comes into contact with the extracellular matrix and other cells.
Unlike microtubules and microfilament , intermediate filaments are not involved in motility of the cells, hence do not associat with molecular motors.
Hence, the correct option is d.
<span>A. Hershey and Chase used bacteriophages to confirm that DNA was the genetic material in genes.
</span>According to the central dogma of molecular biology, the process of protein synthesis in living organisms follows the order: DNA →RNA→ Protein.Information for synthesis of a particular protein is copied (transcribed) from DNA onto mRNA in a process called transcription, in the cell nucleus.<span>mRNA (messenger RNA) leaves the cell nucleus and enters the cytoplasm where it attaches to a ribosome. tRNA (transfer RNA) begins to decode (translate) the information on the attached mRNA in a process called translation and fetches amino acids corresponding to this information from the pool of free amino acids in the cytoplasm, and brings them to the ribosome where they are joined together into a chain and thus the protein is formed.</span>
