Bacteriophage, Tail fibers affix to cell wall proteins.
Viral DNA is infuse into host cell. No coating required. Biosynthesis in
cytoplasm, Lysogeny. Host cell is lysed. 2) Animal: Attachment sites are plasma
membrane proteins and glycoproteins. Capsid goes in by receptor-mediated
endocytosis or fusion. Uncoating by enzymatic removal of capsid proteins.
Biosynthesis in nucleus (DNA viruses) or cytoplasm (RNA viruses). Latency; slow
viral infections; cancer. Released thru enveloped virus bud out; nonenveloped
viruses rupture plasma membrane.
Answer:
Cancer cells such as Hela cells escape to normal cell cycle by mutations that lead to the misexpression and/or overexpression of regulatory molecules (e.g., cyclins and cyclin-dependent kinases) and faulty checkpoint control of the cell cycle
Explanation:
The term cell cycle refers to the mechanism of DNA replication and cell division, which involves a series of sequential steps. The control of the cell cycle depends on 1-cyclins and cyclin-dependent kinases (CDKs) that regulate the cell cycle by a cascade of protein phosphorylations and 2- a group of checkpoint controls that monitor the completion of critical cellular events. HeLa is an immortalized cell line derived from cervical cancer cells. These cells (HeLa) contain 76 to 80 total chromosomes (instead of the 46 chromosomes that contain normal-diploid body cells), some of which are heavily mutated. These mutations can affect CDKs that control the cell cycle as well as checkpoint-control mechanisms (for example, those resulting from DNA damage), thereby cells do not enter programmed cell death (apoptosis) and proliferate uncontrollably.
After looking at the above diagram given, Enzymes are the molecules that were used to cut, copy, and to connect the DNA segments. The correct answer is 2. Make sure to check the number choices, they are out of order on this particular question.
