In what way might a virus contribute to cancer formation?
What will be an ideal response?
Proviral DNA may integrate near a proto-oncogene and alter its expression, thus generating an oncogene, or it may bring in an oncogene during an infection. In either case, the cell cycle can be upregulated by a virus.
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Nematodes have an outer nonliving layer called a cuticle that must shed as the animal passes
from one juvenile stage to the next. This cuticle is produced by the epidermal cells that originate from which germ layer?
a. endoderm b. mesoderm c. ectoderm d. epiderm
________ play a pivotal role in programmed cell death
A) Cyclins B) Telomeres C) Proto-oncogenes D) Oncogenes E) Telomerases
The mechanoreceptors that detect the stretch of tendons and relaxation of muscles are known as
a) proprioceptors b) chemoreceptors c) nociceptors d) thermoreceptors
What happens during Anaphase B?
A. The APC/C gets activated for the first time. B. The spindle apparatus disassembles. C. Kinetochores are pulled toward the poles. D. The nuclear envelope reforms. E. The spindle poles move apart.