The p53 gene is a recessive tumor suppressor gene which functions as a key regulator for the cell cycle. In the event when only one p53 allele is mutated then the function of the p53 gene will persist and apoptosis (programmed cell death) will proceed if there are significant gene mutations in the cell. If two p53 alleles are mutated then the cell will not receive the signal to apoptose even with significant mutations and cancer will develop.
6. Algae are biotic factors. They are living organisms which have the capability to produce food through photosynthesis. It acts as a producer. Also they appear on the wall of tank through reproduction , which is characteristics of living being.
7. Snail is also a biotic factor like algae. They are classified as consumers. They feed on algae to survive with in the tank. They move while feeding on algae and movement is an important trait of living being.
8. Light Bulb is an abiotic factor. Though it is an essential requirement for fish to survive but since it is not a living being , it is considered as abiotic. While fish on the other hand is a biotic factor as it possess life in it.
Answer:
farm hand
Explanation:
because the farm only specializes in cattle
Answer:
Rock
Explanation:
Minerals are inorganic substances that occur naturally in nature and have a
a definite chemical composition and a crystalline structure while rocks may consists of one or many minerals together along with some organic remains due to which it may not look shiny and crystalline from outside.
Here, the two characteristics that enable the reader to identify the object given by grandmother to Emily as rock are –
a) Looks ugly on the outside (shows the presence of organic matter)
b) solid purple color with pretty crystals (crystalline structure inside)
